Grapes over the summer with three fertilizers

First, clever foliar fertilizer. The grape is sprayed with foliar fertilizer and sprayed on the back of the leaves, and shoots and young fruit can also be sprayed appropriately. It can be sprayed during the whole growth period after summer. In order to improve ergonomics, it is possible to use a mixture of drugs and fertilizers. In addition to calcium superphosphate, the general nutrient elements can be mixed with the fruits and fruits, and sprayed in the windless and rainy evening, and can also be used in the morning. From 8:00 to 10:00. Sprays are usually taken from 10 days to 15 days, 2 to 4 times in succession.
Second, pay attention to strong fruit fertilizer. 10 days after flowering, or when the fruit has mung bean size, apply fertilization. Apply 500 grams of compound fertilizer to each ditch. Apply water immediately after application. Then the fruit is sprayed on the leaves. This is a key fertilizer that promotes the growth of young fruit and the shoot growth. It must be sprayed on time, which can effectively increase the fruit's enlarging vitality and achieve the effect of increasing production.
Third, after harvesting the grapes, nitrogen fertilizer should be applied in a timely manner to enhance the function of the leaves, extend the life span of the leaves, increase the storage of nutrients in the tree, and there are two methods of post-harvest nitrogen supplementation: spraying and rooting. good. Spray 0.4% urea solution, apply 4 kg of urea per mu.

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