Shaanxi North Central Agricultural Materials Co., Ltd. Senior Agronomist Li Puxuan
First, nitrogen control is generally no longer topdressing nitrogen fertilizer after August, and shallow water supply methods can be used to maintain relatively stable soil and air humidity.
Second, picking the leaves will cover 1 to 2 old leaves on the apple and increase the use of direct light.
Third, fertilizing root potassium dihydrogen phosphate and foliar spraying potassium dihydrogen phosphate, is conducive to coloring.
Fourth, laying the film in the tree line, between the strains, covered with silver reflective film, increase the intensity of reflection, so that the crown canopy and the lower part of the fruit is not easy to see enough light reflected, significantly increased the color of the top of the fruit and the Department.
5. During the coloring of the mulberry red Fuji apple, diligent tree trays should be avoided to destroy the shallow root system.
Sixth, the early harvest of late harvest has a great influence on the coloring and quality of apples. Premature harvesting, poor coloring of apples, poor quality, generally 175~180 days after harvesting, timely harvesting period, the closer to the late, the greater the temperature difference between day and night, the more conducive to fruit coloring.
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