2、 Thinning flowers and fruits

The purpose of flower thinning and fruit thinning is to reduce a large amount of nutrient consumption, make fruit trees load reasonably, improve fruit setting rate, and avoid fruit bearing every other year. If artificial thinning is used, the earlier the better. Fruit thinning is better than flower thinning, and flower thinning is better than bud thinning. In order to prevent frost damage from causing losses to the orchard, it is recommended that you start from the bud stage, and leave a strong inflorescence every 20 cm. Do not leave a central flower in place at one time. Wait until the fruit sets after flowering, and then drain the side fruit or small fruit on the inflorescence, which is safer and safer.

If this year's experiment of chemical thinning can be carried out 30% after the central flower opens, if the orchard has pollination trees, the chemical thinning can be used directly according to the instructions. If there is no pollination tree, the chemical thinning can be used after 2 hours of artificial pollination. If the amount of flower this year is too large, after 70% of the flower opens, the second thinning can be carried out using the same procedures and methods. After the second time of chemical spraying, the fruit thinning agent can also be used according to the instructions according to the fruit setting rate, The fruit can be fixed manually once in place, and the bag can be set after the third time of spraying.

3、 Foliar nutrition

For the three times from the beginning of the application of Hualuhong to the beginning of bagging, at least 2-3 times of foliar fertilizer should be added. The effect is better if it can be used four times in succession. After the application of Hualuhong, it can strengthen the tree vigor, improve the ability of the tree to resist cold and freeze, make the newly emerged leaves turn green quickly, and the flowers bloom neatly and bright. After the application of Hualuhong, it can accelerate the growth of spring shoots, the leaves can rapidly enlarge, thicken and blacken, and also increase the number of cell division of young fruit, Compared with the young fruit without addition at the same period, the fruit is obviously large and long, which improves the index of fruit type.

This dose of Hualuhong also needs to add polyboron, which is a reproductive element. After adding boron, it can prolong the life of flowering period, elongate the pollination gas tube, provide sufficient opportunities for pollination, improve the ability of pollination and fertilization, and improve the fruit setting rate. From the first time after anthesis, the fruit should be supplemented with calcium. Since the first peak of calcium demand for apples is 40 days after anthesis, calcium supplementation can improve the hardness and surface light of the fruit, reduce the bitter pox and black spot disease of the fruit, and prevent the water crack and dehydration phenomenon in the later period. Therefore, calcium supplementation should be strictly carried out several times after anthesis, especially for apples in pure paper bags, and the amount of calcium can be appropriately increased each time.

4、 Orchard watering

In order to achieve the goal of early growth and early stop of spring shoots, the orchard should be replenished with water in a timely manner one week after flowering, that is, in late April, because the flowering and budding of fruit trees consume a lot of water and nutrients. After entering May, the orchard should not be watered as much as possible, which is conducive to the stop of spring shoots. In June, the flower bud differentiation period will enter. At that time, proper water control should be carried out, and watering should be carried out as far as possible into July. If there is effective rainfall in July, it should be postponed later, Therefore, the orchard must be watered in late April, otherwise, the fruit trees will not spend May and June safely.

In May and June, as long as the orchard has a drought, it must be watered. Water control is correct. If there is a drought, it is wrong not to water. At that time, it is the spring shoots that stop for a long time. As long as the watering stops, the new shoots will rush out again. If the watering stops, they cannot enter the flower buds and divide flowers. Therefore, in order to ensure that the orchard does not have a drought in May and June, it is recommended to water the orchard as much as possible in late April to ensure that the orchard does not have water shortage from May to June.