2023-01-17

Malathion has good contact killing, stomach toxicity and certain fumigation effects, without internal absorption. After entering the insect body, it is oxidized to malathion, which can play a more toxic role. When entering warm-blooded animals, it is hydrolyzed by carboxylesterase, which is not found in the insect body, thus losing its toxicity. Malathion has low toxicity and short residual period of efficacy, and is effective against the pests of the biting mouthpiece and chewing mouthpiece.Role of malathion:1. Low-toxic, broad-spectrum insecticides and acaricides. It has the effects of touch killing and stomach poisoning, but also has weak fumigation, without internal absorption. Due to its strong killing power, rapid action and long-term use, many pests have developed resistance. It can be used to control pests of rice, wheat, cotton, vegetables, tea and fruit trees, such as aphids, rice planthoppers, rice leafhoppers, rice thrips, duckweed borers, crustaceans, red spiders, golden crustaceans, leaf miners, leaf hoppers, cotton leaf worms, slime worms, vegetable borers, tea leafhoppers and fruit tree heart-eaters. It can be used to kill mosquito and fly larvae and bedbugs, and can also be used to create pests in food.2. Malathion is a highly effective and low-toxic insecticide and acaricide with a wide range of control. It is not only used for rice, wheat and cotton, but also used for pest control of vegetables, fruit trees, tea and warehouses due to its low toxicity and short residual effect. It is mainly used to control rice planthopper, rice leafhopper, cotton aphid, cotton spider, wheat armyworm, pea weevil, soybean heartworm, fruit tree spider, aphid, mealy scale shell worm, nest moth, vegetable yellow jump, vegetable leaf worm, various scale insects on tea trees, as well as mosquitoes, fly larvae and bedbugs.3. It is a low-toxicity non-invasive insecticide and acaricide, widely used in agriculture and horticulture, and can also be used as household health medicine.Use method of malathion:1. Prevention and control of wheat crop pests, armyworm, aphid and wheat sawfly, spray with 45% emulsifiable concentrate 1000 times liquid.2. Prevention and control of bean crop pests. Soybean borer, soybean bridge worm, pea weevil, pea and pipe aphid, and yellow striped flea beetle shall be spray with 45% emulsifiable concentrate 1000 times, with a spray volume of 75-100 kg per mu.3. Prevention and control of rice pests: rice leafhopper and rice planthopper.4. Prevention and control of cotton pests. Cotton leaf jumpers and bug bugs should be spray with 45% emulsifiable concentrate 1500 times.5. Prevention and control of fruit tree pests All kinds of thorn moths, nest moths, mealy scale insects and aphids on fruit trees shall be spray with 45% emulsifiable concentrate 1500 times liquid.6. Prevention and control of tea plant pests Tea weevil, white scale, tortoise scale, tea cotton scale, etc., use 45% emulsifiable concentrate 500-800 times of liquid spray.7. Prevention and control of vegetable pests, such as cabbage caterpillar, vegetable aphid, yellow striped flea beetle, etc., use 45% emulsifiable concentrates and 1000 times liquid spray.8. Prevention and control of forest pests: geometrid, pine caterpillar, poplar moth, etc., use 150 to 200 ml of 25% oil per mu, and ultra-low volume spray.9. Prevention and control of health pests: use 45% emulsifiable concentrate 250 times of liquid at the rate of 100-200 ml/m2. The bedbug is treated with 160 times of 45% emulsifiable oil at the rate of 100-150 ml/m2. Cockroaches are treated with 45% emulsifiable concentrate 250 times as 50 ml/m2.

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2023-01-17

Chemical fertilizers and pesticides are indispensable means of production for modern agriculture. In order to improve the yield and quality, the number and types of chemical fertilizers applied by farmers are increasing day by day, among which foliar spraying fertilizer has become a technical measure often adopted by farmers, especially fruit farmers and vegetable farmers, due to its small amount of fertilizer and quick effect; On the other hand, farmers should also spray pesticides regularly to control diseases and pests. Many people try to mix medicine and fertilizer and spray them together with the purpose of saving labor and improving work efficiency. For example, the "one spray and three prevention" technology widely promoted in the northern wheat ear stage is to mix ketone (or diniconazole), piramifos (or acetamiprid) and potassium dihydrogen phosphate for a single spray. It can not only control wheat rust, powdery mildew and wheat aphid, but also reduce the damage of lodging and dry hot wind, achieving the good effect of saving labor, increasing production and income. The first reason why the "one spray and three prevention" technology is worthy of recognition and promotion is that the timing is appropriate. Because the spike stage of wheat is just the key period to control "two diseases and one insect" and to supplement the spike fertilizer and increase the 1000-grain weight, it needs to be mixed with medicine and fertilizer. In other periods, it may become a waste without targeted mixing. As far as the scientific use of pesticides is concerned, the preparation of liquid medicine with clear water can ensure the efficacy.The key of mixed use is that chemical reactions between fungicides and pesticides, and between drugs and fertilizers cannot occur, which does not affect the physical properties of drugs and fertilizers, such as solubility, suspension, emulsification, etc., nor affect their respective efficacy. Of course, if there is no chemical reaction, it will not increase the toxicity of drugs to humans, animals and plants and the decomposition of drugs and fertilizers. From the point of view of maintaining efficacy, we already know that some pesticides cannot be mixed with basic pesticides (sulfur mixture, Bordeaux liquid), such as fipronil, chlorfenuron, acetamiprid, tin and other insecticides and fungicides such as mancozeb, aluminum triethylphosphate, oxazolin, metalaxyl, ketone, diniconazole, isocarburide, chrysromycin, polyantimycin, and nanningmycin. It is reasoned that they cannot be mixed with basic or weakly basic fertilizers such as ammonium carbonate, plant ash, calcium magnesium phosphate, diammonium phosphate, borax and ammonium molybdate.Some plant growth regulators, such as gibberellin, chlormequat and ethephon, cannot be mixed with alkaline pesticides or fertilizers, otherwise they will decompose and fail. If herbicides are used for soil treatment, they are safe in most cases, especially when they are mixed with fine soil (or water) before use. However, if it is used for the treatment of stems and leaves, it should be very careful. When it is used alone, a slightly larger dose or uneven spraying may cause drug damage, so it should not be mixed with fertilizer generally. If mixed, the herbicide should also be prepared into the mother liquor first, and the fertilizer should also be dissolved with water before mixing with the mother liquor, and should be sprayed and prepared immediately.Biological pesticides cannot be mixed with chemical fertilizers or fungicides, because chemical fertilizers and fungicides may kill beneficial microorganisms and reduce the control effect. In addition, we should also pay attention to the special provisions of some chemicals on mixed use, such as a bactericide called chlorobromoisocyanuric acid, which can cure fungal, bacterial and viral diseases simultaneously, and is a rare good medicine. However, there are also provisions on "not to be mixed with other pesticides", which is not to be mixed with chemical fertilizers.

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2023-01-17

When the plant reaches a certain stage of growth and development, it will turn into reproductive growth under appropriate environmental conditions, that is, it will form flower buds at a certain position, and then blossom and bear fruit. The number of flower bud differentiation directly affects the later results and yield. Most fruit trees have the phenomenon of big and small years, which is caused by the number of flower bud differentiation. In order to reasonably control flower bud differentiation, people have done a lot of research:Pineapple is a fruit with very different maturity in the south, and the maturity period is only 20 days. The application of ethephon to promote flowering can make single crop fruit into multiple crop fruit. The planned use of ethephon at different times to promote its flower bud differentiation can extend the 25-30 day fruit harvest period of pineapple in South China to about 200 days, which is greatly beneficial to the production and market supply of pineapple.Some plant growth regulators, such as paclobutrazol, chlormequat, ethephon and cytokinin or their mixture, are widely used for apple size, which can completely control the high yield of the year and the high yield of the year, that is, reach the desired level.Other fruit trees, such as pears and grapes, can also use CCC and 6-BA to regulate their vegetative growth and promote flower bud formation.At the same time, the use of plant growth substances can also inhibit flower bud differentiation. Apple and pear can inhibit its excessive flower bud formation with about 300mg/L of gibberellin 2 to 6 weeks before flower bud differentiation in the year with many fruits; Gibberellin can also inhibit the flower bud differentiation of apricot, peach and cherry; Grape can also control its flower bud differentiation.In addition, the use of plant growth substances can also reduce the formation of ineffective flowers, delay the opening of flowers, and extend the flowering period. The formation of peanut ineffective flowers can be greatly reduced by regulating phosphorus; Applying gibberellin to grapes and some fruit trees with stone fruits in autumn can delay their flowering date in the next spring, which has certain production significance for preventing early frost in spring.Both paclobutrazol and CCC have the effect of prolonging the flowering time of chrysanthemum, especially paclobutrazol, which can prolong its flowering time by more than 10 days.

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2023-01-17

Quanfeng paclobutrazol is a high-quality broad-spectrum plant growth regulator, which has the effects of significantly weakening the apical advantage of plants, regulating morphological differentiation, promoting lateral bud germination, promoting flower bud formation, improving flower setting rate, and enhancing stress resistance. It should master the following technical points when using:1、 Application method of paclobutrazolThe common methods of using paclobutrazol in flower production include soaking (seed ball), soil application, leaf spraying and drying. Among them, soaking, soil application and leaf spraying have good effects, and the efficacy is durable and stable. There are two methods of soil application. One is to plant leaf-viewing and flowering plants in the ground, dig a circular ditch with a depth of about 5 cm around the tree crown, evenly sprinkle it into the ditch, and then irrigate it in time; Second, for indoor potted flowers, water them in time after drilling holes in the potted soil. Leaf spraying is mostly conducted at the early stage of growth. The spraying time and concentration are different for different flowers, soil quality and nutrition management level. The spraying method is the same as the general fertilizer spraying method, but attention should be paid to the uniform spraying of the growth point.2、 Dosage and concentration of paclobutrazolIt varies due to variety, growth trend, age, soil quality and other factors. The amount of soil application is generally 0.25g per square meter, the concentration of the solution is 800-1500ppm when the leaves are sprayed, the concentration of the root (seed ball) is 70-90mg/L, and the solution is soaked for 5-8 hours. The application amount and concentration of woody flowers can be slightly higher than that of herbaceous flowers. Use orchids with caution.3、 Application timeDifferent application methods have different application time. The soil application of paclobutrazol is generally carried out before the spring flower buds sprout (spring flowers); Leaf spray is generally used when the new shoots grow about 10 to 15 cm in the current year. Deciduous flowers and trees can be used some time in advance to ensure timely effect.4、 Application timesBecause paclobutrazol has a lasting effect, the effect can last for 3 to 5 years if it is applied once, so the application times should be strictly controlled. Soil application shall be conducted at most once every three years, and leaf spray shall be conducted once a year. If it is used for consecutive years, the concentration shall be reduced year by year. If you find that the growth is extremely weak, you should stop using it. If necessary, you can spray gibberellin to help restore growth.5、 Stagnancy periodSince there is a period of time from the application of paclobutrazol to its efficacy - that is, the efficacy of paclobutrazol is sluggish, so it is very easy to mistake it as "ineffective" in production, and then repeat the application, resulting in excessive dosage. Before application; This factor should be fully considered to avoid losses.

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2023-01-17

Different plant growth regulators have different symptoms when they are harmed. Experts teach you to distinguish the symptoms of the following common plant growth regulators:1. Toxic symptoms of paclobutrazol: short plant, small root tubers, deformity, curly leaves, dumb flowers, early shedding of old leaves at the base, twisting and shrinking of young leaves. For cotton, the plant is seriously stunted, the fruit branches cannot extend, the leaves are deformed, the buds are clumped, and the buds fall. Peanut leaves are small, the plant does not grow, the peanut fruit is small, and premature aging occurs. As the efficacy of paclobutrazol lasts a long time, it will also cause drug damage to the next crop, resulting in no emergence, late emergence, low emergence rate, seedling deformity and other drug damage symptoms.2. Symptoms of chloramphenicol poisoning: the leaves become smaller and thicker, the internodes are dense, the vegetative buds are clustered, and the plant growth is uneven, resulting in a large number of buds and bolls falling off, resulting in late green and late maturity of cotton. There are few key points in the use of acetaminophen on gramineous plants, and the dosage range is wide. Generally, the damage caused by chlorphenamine will not cause damage to the next crop.3. Symptoms of compound nitrophenol sodium poisoning: the symptoms of mild poisoning are inhibition of plant growth and poor development of young fruit; The severe drug damage is plant wilting, yellowing and death. The damage caused by sodium nitrophenolate is less frequent, mainly on sensitive crops such as peach trees and watermelon, resulting in crop flower drop, fruit drop, hollow fruit and other phenomena.4. Symptoms of ethephon: the top of the plant wilts, the leaves, flowers and young fruits at the lower part of the plant gradually turn yellow and fall off, and the residual fruits mature in advance. The serious drug damage is that the whole plant leaves turn yellow and fall off rapidly, and the fruit ripens and falls off rapidly, leading to the death of the whole plant. According to China Pesticide Network, excessive use of ethylene or improper use of time can cause drug damage. The damage of ethephon will not affect the next crop.5. Symptoms of a-naphthylacetic acid toxicity: the mild naphthylacetic acid toxicity is characterized by defoliation of flowers and young fruits, which has little impact on plant growth. The more serious drug damage is leaf atrophy, petiole overturning, leaf falling off, and fruit rapidly maturing and falling off. As for the damage caused by soaking seeds, the light will lead to fewer roots and deformed roots, and the heavy will lead to no rooting and seedling emergence. A-Naphthylacetic acid will cause harm to the next crop, but most of them will not cause harm to the next crop.6. Symptoms of DA-6 (amine fresh fat) drug damage: the leaves have spots, and then gradually expand, with light yellow gradually turning to dark brown, and then transparent. DA-6 (amine fresh fat) has only been damaged on peach trees, and no drug damage has occurred on other crops so far.7. Symptoms of triacontanol poisoning: when triacontanol is used in a large amount or with a low purity, it will cause the sheath to bend at the seedling stage, the root to be deformed, and the adult plant will cause the young leaves to curl.8. Symptoms of brassinolide poisoning: plants grow wildly, fruits are few and small, and rigid fruits are formed in the later stage.9. Symptoms of gibberellin poisoning: the fruit is stiff and cracked, the fruit tastes astringent, and the plant is green and late maturing.10. Symptoms of chlormequat poisoning: the plant is seriously stunted, the fruit branches can not extend, the leaves are deformed, there are chicken feet leaves, vegetative buds are clustered, the fruit branch nodes are too short, the plant branches and leaves are brittle and easy to break. The roots are bent and the young leaves are seriously not long after soaking, and the emergence is delayed for 7 days, and the seedlings are distorted after emergence. The chlormequat is easy to produce critical effects on dicotyledonous plants, but not on monocotyledonous plants. Generally, chlormequat does not affect the next crop.11. 2. Symptoms of 4-D drug damage: symptoms of mild drug damage include softening and bending of petiole, drooping of leaves, curling of top heart leaves, leaf deformity, fruit deformity, hollow fruit formation and fruit cracking. The severe drug damage is that most of the leaves of the plant droop, the heart leaves curl seriously, deformity and contraction occur, the growth points of the plant shrink and necrosis, and the whole plant withers and dies gradually. Therefore, the improper use of 2 and 4D will kill plants like herbicides. The main key is that the damage to dicotyledonous plants is heavier and the damage to monocotyledonous plants is lighter.The above are the symptoms of common plant growth regulators causing drug damage. Find and remedy the drug damage in time to avoid causing economic losses. (China Pesticide Network)

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2023-01-17

Recently, the relevant media reported that mangoes on the market were ripened with the plant growth regulator ethephon, which had a negative impact on the safety of agricultural products, causing people's concern and concern. Recently, Yi Ganjun, the vice president, doctoral supervisor and researcher of Guangdong Academy of Agricultural Sciences, gave a detailed answer to the question of ethephon:Reporter: Why should ethylene be used to ripen fruit?Yi Ganjun: During the natural ripening process of fruits (especially bananas, mangoes, papayas, etc.), a large amount of ethylene will be released, and the ethylene released further accelerates the ripening of fruits.People put mature bananas or apples and raw bananas together, and then wrap them with film. The principle is to start the ethylene production inside the banana fruit by releasing ethylene from the mature fruit, so as to accelerate the ripening of bananas. The folk use of stick incense to ripen bananas is also the principle of using stick incense combustion to produce ethylene gas.According to pesticide website, the artificial use of ethylene to ripen bananas and other fruits is to use it to slowly release ethylene to achieve the purpose of ripening.Reporter: Does ethylene have side effects on human body?Yi Ganjun: Ethylene is a natural plant hormone that widely exists in plants. A large amount of ethylene will be produced during the natural ripening process of fruit, so ethylene has no side effects on human body.Reporter: What is the principle of ethephon ripening fruit? Yi Ganjun: ethephon reacts with water or hydroxy-containing compounds to release ethylene. The plant contains a glycoprotein called ethylene receptor. After the ethylene is combined with the ethylene receptor as a catalyst, it will further metabolize and play a physiological role, such as accelerating the respiration of fruit, promoting the conversion of organic acids and starch into soluble sugar in the fruit, and so on, so as to promote ripening and coloring, Therefore, ethylene ripening process is a complex plant physiological and biochemical reaction process.Reporter: Is it scientific to ripen fruits with ethylene or ethephon?Yi Ganjun: ripening is an indispensable link in the fruit industry chain, and also a common practice at home and abroad for many years. As long as the fruit is ripened with ethylene or ethephon according to the standard operation, it will not cause any harm to human body. The residue of ethephon in the fruit should not exceed 2mg/Kg. Therefore, when using ethephon to ripen the fruit, it should be operated according to the relevant specifications and should not be soaked for too long. Use the method of introducing ethylene gas into the ripening silo to ripen. (China Pesticide Network)

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2023-01-17

At present, China's pesticide demand ranks first in the world. However, only 35% and 65% of the pesticides used are discharged into the environment as pollutants, and all the pollutants are finally returned to the soil. In the long run, the land and environment cannot be carried, and the "9 consecutive increases" have a price.According to the dynamic update data of pollution source census, the chemical oxygen demand and ammonia nitrogen emissions of livestock and poultry breeding industry in China reached 11.84 million tons and 650000 tons respectively in 2010, accounting for 45% and 25% of the total emissions of the country, and 95% and 79% of the emissions of agricultural sources respectively. The pollution of large-scale livestock and poultry breeding has become the main agricultural pollution source.In terms of species, the detection rate of pesticide residues in beans, green leaves and solanaceous vegetables is high.According to the statistics of the monitoring center of agricultural products, the qualified rate of pesticide residues from low to high is beans, eggplants, Chinese cabbage, green leafy vegetables, potato root vegetables, onions and garlic, melons and edible fungi. He Jiguo, director of the Department of Nutrition and Food Safety of China Agricultural University, told reporters that green leafy vegetables have a lot of pesticide residues because their leaves are soft, watery and insects like to eat, so they spray a lot of pesticides. In addition, aromatic vegetable farmers have low residue. Artemisia annua, garland chrysanthemum, coriander and so on have a strong pungent flavor and are natural insect repellents.Seasonally, pesticide residues are low in winter and high in spring, summer and autumn.A pesticide residue expert from the Beijing Academy of Agriculture and Forestry told the Life Times that because the temperature difference between indoor and outdoor is relatively large in winter, the air circulation is not very good, and is not suitable for pest breeding, so pesticides are used less and pesticide residues are low. The Ministry of Agriculture detected a total of 496 vegetable samples in Beijing, and found that May and November were the periods of high detection frequency of pesticide residues. According to the test results in Hangzhou, the annual high pesticide residue of vegetables in Hangzhou is in April and October.In terms of the types of agricultural residues, there are many pesticides in cowpeas and leeks.Because they love worms, they are often sprayed with thicker pesticides, some of which are more toxic and easy to remain; There are many fungicides for cucumbers and tomatoes. Because of the high humidity of their growing environment, they are easy to get sick, especially when they are used more. Compared with pesticides, fungicides do less harm to human body.In terms of planting location, there are few agricultural residues of vegetables and fruits in the greenhouse.Because physical methods such as anti-virus nets can be used to control pests in the greenhouse, less pesticides are used. Compared with greenhouse vegetables, open-field vegetables seem to be very natural, but they actually use more pesticides than greenhouse vegetables.What are the good ways to reduce agricultural residues?First, soak the vegetables bought for 5 minutes and then wash them, or soak them with rice washing water to neutralize the pesticide toxicity;Second, wash vegetables with 5% salt water;Third, vegetables and fruits that are heavily used with pesticides, such as cucumber and eggplant, should be peeled before eating;Fourth, high temperature heating will also decompose pesticides. Some heat-resistant vegetables, such as cauliflower, beans and celery, can be washed and boiled for a few minutes, which can reduce the amount of pesticides by 30%. After being cooked at high temperature, 90% of pesticides can be removed;Fifth, sunlight can decompose and destroy some pesticides in vegetables. It is determined that the residues of organochlorine, organomercury and other pesticides can be reduced by about 60% when vegetables are exposed to sunlight for 5 minutes.(Food Partner Network)

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2023-01-17

In 2011, the issue of farmland water conservancy was raised to the height of "No. 1 Document", marking the urgency of solving the problem of water scarcity. With the adjustment of agricultural industrial structure, broadening the efficient and water-saving agricultural path has become a major issue of agricultural production. This has led to fundamental changes in the structure of fertilizer demand and the development of new agricultural technologies.Water-soluble fertilizer, which has the nutrients needed for crop growth, can be rapidly dissolved in water, and is more easily absorbed by crops, is becoming the fertilizer choice of farmersThe scope of use has also gradually shifted from cash crops to field crops. Because water-soluble fertilizer has the characteristics of water saving, fertilizer saving, labor saving and yield increasing, it fully meets the requirements of water-saving agriculture "water and fertilizer integration" for fertilizer, so the development prospect is very broad. It is understood that at present, China's water-soluble fertilizer is in a critical period of transformation from auxiliary fertilizer to main fertilizer."Water and fertilizer integration" technology is a new agricultural technology that integrates irrigation and fertilization. It is to dissolve solid quick-acting fertilizer in water and fertilize it with water. Generally, the fertilizer is dissolved and mixed in the pool in the field, and the water is used as the carrier to complete the fertilization at the same time of irrigation. The advantage of this technology is that the fertilizer efficiency of irrigation and fertilization is fast, and the nutrient utilization rate is improved, which can avoid the problems of volatilization loss, slow dissolution and slow final fertilizer efficiency caused by fertilizer application in the dry topsoil layer; In particular, the problem of volatilization loss of ammonium and urea nitrogen fertilizer on the surface is avoided, which not only saves nitrogen fertilizer but also is beneficial to environmental protection, and has a significant effect on water saving.Compared with conventional fertilization, the irrigation and fertilization system can save 50% to 70% of fertilizer and achieve the goal of good crop yield and quality in production. The advantages of this technology are that the fertilizer efficiency of irrigation and fertilization is fast, the nutrient utilization rate is improved, the balanced fertilization and centralized fertilization are realized, the volatilization and loss of fertilizer are reduced, and the loss caused by nutrient excess is reduced. It has the advantages of simple fertilization, timely fertilizer supply, easy absorption of crops, and improved fertilizer utilization rate. Water-soluble fertilizer has the characteristics of saving water, fertilizer, labor and yield.

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2023-01-17

"Lodging" is one of the main obstacles affecting wheat yield under high fertilizer and water conditions. In recent years, the popularization and application of plant growth regulators in wheat production has opened up a new way to prevent lodging and promote yield increase, and is an important supporting technical measure for high and stable yield of wheat.1. Spraying paclobutrazol at the starting stage of wheat, spraying 30kg of 200ppm paclobutrazol solution per mu can make the plant dwarf, enhance the ability of lodging resistance, and can also control wheat powdery mildew and improve the plant's nitrogen absorption and utilization rate.2. The application of Uniconazole Uniconazole (code S-3307, commercial 5% wettable powder) is a new and efficient plant growth regulator, its biological activity is 6-10 times higher than that of paclobutrazol. Applying it on wheat can prevent plant lodging under high density, high fertilizer and water conditions, and can reduce sterile spikelets and increase 1000-grain weight; According to the test, the wheat with uniconazole increased by 15.4% on average compared with the control under the condition of no wind and no lodging. Application method: within one week before wheat jointing, spray 50 kg of 30-40 ppm uniconazole solution per mu.3. For the wheat field with large population and vigorous growth, spraying 0.15 ～ 0.3% chlormequat solution 50 ～ 75 kg per mu at the early stage of jointing can effectively inhibit the elongation of internodes, make the plant dwarf and the stem base rough and hard, thus preventing lodging; If mixed with 2,4-D butyl ester, it can also control broadleaf weeds in wheat field.4. At the jointing stage of wheat, the application of chloroquine 15~20 ml per mu and 50~60 kg of water on the leaf surface can inhibit the elongation of internodes, prevent late lodging, and increase yield by 10~20%.

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2023-01-17

In spring, if we can control wheat growth and prevent lodging, we can enhance the photosynthetic efficiency of wheat and improve its seed setting rate and 1000-grain weight. Spraying plant growth regulation can solve this problem, and it is a very effective measure to increase production.Spraying paclobutrazol and paclobutrazol is a kind of plant growth retarding agent, which can inhibit wheat legging, dwarf plant shape, increase tillering and prevent lodging, thus improving wheat yield. The application method is: before the wheat gets up and jointing, use 15% paclobutrazol wettable powder spray with a concentration of 150ppm per mu.Spraying chlormequat can synthesize the length of 1-2 nodes at the base of wheat, prevent lodging, increase chlorophyll content, increase tillering, promote spike differentiation, and increase 1000-grain weight. The application method is: before the jointing of wheat, evenly spray 25~40ml of 50% chlormequat aqueous solution per mu, 30~40kg of water, and evenly spray it.Spraying the hormone before jointing of wheat can shorten and thicken the 1~3 nodes at the base of wheat stem, control the exuberance and prevent lodging. In the flowering stage of wheat, it can improve the seed setting rate and filling speed, promote the big spike and full grain, and also advance the mature stage by 2-3 days. The application method is: before the jointing of wheat, 15~20ml of Zhuzhuang Su is applied per mu, and 40kg of water is spray; In the flowering stage of wheat, use 8-12ml of Zhuzhuang Su and 150g of potassium dihydrogen phosphate to spray 40-50kg of water per mu.

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