Human beings pay more attention to ecological and environmental security, and biotechnology is growing stronger, which all add a threshold to the development of new plant growth regulators. Therefore, the current thinking of plant growth regulator technical drug development is changing and adjusting. In terms of new product development, more attention is paid to expanding the application space of old varieties with the help of new technologies, including the following four directions:

1. Development of new products with low toxicity and low residue, such as calcium cyclamate, anti-vinegar and other products;

2. The development and improvement technology of biological pesticides, such as the biological fermentation technology of s-inducin, and the improvement of the persistence of brassican vinegar;

3. New technologies for the preparation and processing of old products, such as brassican vinegar soluble powder, regulator sustained-release agent and other technologies;

4. Utilize the complementation and synergism between the active ingredients to develop the compound products of the regulator.

Here, we introduce several new composite products.

1、 Gibberellin+benzylaminopurine (GA4+7+6-BA)

Benzylamine · gibberellic acid is a compound plant growth regulator, which can be absorbed by the stems, leaves and flowers of plants, and then transmitted to the active part of meristem to promote fruit setting. The preparation has 3.6% and 3.8% contents, and has two dosage forms of emulsifiable oil and soluble agent, diluted 600-800 times, and used respectively in the blooming period of apple and 15~20 days after the application. This mixture is an effective plant growth regulator. Benzaminopurine can promote cell division and flower bud differentiation; GA. - 7 is an important endogenous hormone to promote plant growth and development. It can promote stem elongation, break dormancy, and promote fruit setting. The combination of the two can significantly improve the fruit type, increase the fruit setting rate and increase the yield. It can promote the growth and development of plants, correct and beautiful fruit shape. From the perspective of its physiological function, this mixture can not only improve the fruit setting rate, remove rust, and improve the yield and quality of apple series fruit trees, but also be used for fruit trees such as bananas, grapes, mangoes, pears, melons such as watermelon, loofah, cucumber, tomato, pepper, eggplant and other solanaceous crops, and also can be used for cut flowers, potted flowers and other crops. It is a combination of fruit setting, fruit swelling Multi-functional products such as prolonging flowering period. Therefore, this product has a very broad prospect of promotion and application.

2、 Gibberellin+indoleacetic acid+brassinolide

The preparation is 0.136% Chi. Indo. Brassica wettable powder, 3.5~14g/mu, mainly used for tea, cucumber, apple tree, wheat and other types of crops. This mixture is a pure natural plant-derived product, containing gibberellin, indoleacetic acid, brassinolide and other plant endogenous hormones as well as flavonoids, amino acids and other active substances. It can promote root development, promote chlorophyll synthesis, induce flower bud differentiation, enhance plant growth, improve crop quality, improve crop resistance to drought, cold, frost and disease, and relieve fertilizer and drug damage. It is a fully functional pharmaceutical product. This product still has broad prospects in promotion and application, and is a good product to be popularized.

3、 Potassium indobutyrate+s-inducer

The preparation is 1% wettable powder, diluted 500~1000 times, mainly used to promote rooting in rice seedling fields. The inducer is a natural substance in plants and a product of microbial fermentation. Its main function is to induce plants to develop resistance to adverse environment. It is well known that the development of biological pesticides (including biological regulators) is an inevitable choice to improve the environmental quality and ecological safety of agrochemical products. The development and industrialization of biological regulators will play an increasingly important role in the field of regulator research, and will become one of the technical support of pollution-free agriculture.

4、 Tefenone+ethephon

This mixture is mainly used for cotton drying. It can be used when the cotton naturally opens its bolls 60-70%, and the effect is fast. The cotton stops growing in 24 hours, dies in 3 days, and basically dries up in 7 days. It is the efficient cotton desiccant currently used in China. In recent years, it has gradually replaced the paraquat+ethephon mixture to avoid the side effects of dead cotton leaves without falling off, cotton peach ossification and affecting cotton picking by machine. According to a large number of experimental and research data, the use of thiophene in combination with ethylene to accelerate the ripening of cotton will cause all cotton leaves to fall off for mechanical cotton picking. Most of the major cotton production bases in foreign countries use machinery to pick cotton. China's machinery picking has just begun. With the increase in the value of labor force, machinery picking will be the inevitable direction of China's development, and Thi · B will also be one of the promising plant growth regulators.

5、 Other viable composite products

Sodium naphthylacetate+sodium indobutyrate, its dosage form is 50% soluble powder, and its concentration is 10-2000mg/L, which is mainly used for cutting rooting and transplanting rooting. It is an older product with significant efficacy. With the development of agricultural industrialization, this product will continue to glow with vitality.

Promoter. It is mainly used to control the growth and shoot of fruit trees. Promoters are used in combination with the control products to avoid the side effects of fertilizer loss and premature aging caused by excessive control. With excellent performance, it has become a more widely used direction of plant growth regulators.

Sodium nitrophenolate+DA-6, its mixed preparation can be water, powder, granules and other models. It is an excellent compound preparation that has become a conventional preparation in the past 10 years. Its superior quick-acting, long-acting and safety have been recognized by everyone, and it still has its place in the future regulator market.

6、 Conclusion

China's agricultural production is facing problems such as food security, ecological security, frequent occurrence of biological and abiotic adversity, etc. How to ensure the sustainable development of China's agricultural production and improve the competitiveness of agricultural products in the field of cultivation has become the primary task of crop cultivation discipline. At this time, it is particularly necessary to review and summarize the achievements of crop chemical control and continuously improve its technical level. Making full use of the existing varieties of pesticides and plant growth regulators to produce new products is an important task for us at present, and it will also become a major trend. We should seize this opportunity to develop our agrochemical products, otherwise, once the world's agrochemical industry undergoes major changes, China's agrochemical industry will face the risk of being forced out of the market.