One is to apply foliar fertilizer. The grape is sprayed with foliar fertilizer, which is sprayed on the back of the leaf, and the shoots and young fruit can also be sprayed properly. It can be sprayed during all growth periods after summer. In order to improve work efficiency, it can be mixed with medicine and fertilizer. In addition to superphosphate, the usual nutrients can be mixed with melon and fruit, and it can be sprayed in the windless and rainless evening. It can also be used in the morning. 8 to 10 o'clock. Usually spray once every 10 to 15 days, 2 to 4 times.
The second is to re-apply strong fruit fertilizer. Fertilization was carried out 10 days after flowering and when the fruit had mung bean size. 500 g of compound fertilizer was applied to each ditch, and the soil was covered with water after application. Spraying melon and fruit on the foliage, this is a key fertilizer to promote the expansion of young fruit and shoot growth. It must be sprayed on time, which can effectively increase the fruit's expansion and increase the yield.
Third, after harvesting the grapes, the nitrogen fertilizer should be replenished in time to enhance the function of the leaves, prolong the life of the leaves, increase the nutrient storage of the trees, and post-harvest nitrogen supplementation has two methods: spraying and root application. good. Apply 0.4% urea solution to the spray, and apply 4 kg of urea per acre.
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