Measures to promote apple coloring
The bright color of the apple gives a sense of beauty and helps to increase the value of its products. So, how can we promote apple coloring?
First, strengthen water and fertilizer management moderate moisture, adequate fertilizer, timely, coordination of nitrogen, phosphorus, potassium, is conducive to the synthesis of pigment. Therefore, the orchards should be watered in time for drought, and timely drainage in case of earthworms; organic fertilizers should be applied, nitrogen fertilizer should be stopped when nearing coloring, and phosphorus and potassium fertilizers should be added appropriately.
Second, shop reflective film in the apple began to color, the leveling of the tree plate, laying silver reflective film, to promote the coloring of apples have a significant effect.
Third, to strengthen the tree management and reasonable pruning, so that the distribution of leaves and leaves, the proportion of leaf and fruit appropriate to maintain good ventilation and light in the crown. When the fruit is coloring, the old leaves covered on the fruit are removed to increase the utilization of light and promote the coloration. At the same time, it is possible to prevent diseases and insect pests, but the picking time cannot be too early and the number of picking leaves can not be excessive. For people who do not see light, they can turn their shades to sunny places. Fruits that can be recovered after transfer can be fixed with transparent tape.
Fourth, the application of foliar fertilizer in apple harvest before 30-40 days, spraying potassium dihydrogen phosphate solution, also has to promote the role of coloring.
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