Fertilization in spring: 15 to 20 days before the germination of spring shoots is dominated by quick-acting nitrogen fertilizer; fertile trees and first fruit trees should be treated with buds, and the amount of flowers should be determined according to the amount of flowers, so that the length of spring shoots is good for fruit preservation. At the same time, with the use of Huahuawang No.3, the branches can be controlled to be mad, and assimilation induces the transmembrane signal conversion of plant cells, forcing the toppings to vigorously return a large amount of nutrients, and the main nutrient of the trunk turns to the young fruit development system to enhance the fruit's swelling vitality.
Fertilization at the young fruit stage: when the beginning of Xiehua is applied, the compound fertilizer is the main one, which should be determined according to the color of the leaves and the amount of fruit. But pay attention to mastering the emergence of summer shoots. The nutrients needed for the young fruit in the summer shoots are usually accepted as the external top dressing supplement. The foliar surface is sprayed with photosynthetic nutrient film fertilizer to help the fruit trees absorb more light fertilizer and conventional fertilizer.
Flower bud differentiation fertilizer: the same as usual before the flower bud differentiation in November, mainly inorganic fertilizer, compound fertilizer or buried soil fertilizer. In combination with the use of intelligent control to promote the flower king, it can replace paclobutrazol and other hormone killing pesticides, replace the fruit tree artificial ring stripping (opening armor), inhibit the branch shoots mad, and adjust the size of the two-year (two years to promote flowers, reduce the annual control of flowers) The number of flowers is balanced, and at the same time, a large amount of nutrients are returned to the fruit to expand and the grade of the pulp is improved.
Pre-harvest (post-harvest) fertilizer: old trees, weak trees, trees with many hanging fruits, and tree-retaining trees can be applied to the quick-acting fertilizer before or after fruit picking, but the green and vigorous trees and the hanging trees can not be applied.
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