Clever foliar fertilizer 1 superphosphate leaching solution: take over 1 kg of calcium phosphate plus 5 kg of clear water, immerse for 12 hours to remove the filtrate. When used, every kilogram of filtrate is diluted to 50 kg to get 2% of the leachate. 2 ash leaching of plants: Take 1 kg of plant ash to 5 kg of fresh water, dip for 24 hours and take liquid. When used, every two kilograms of the filtrate is diluted with 50 kilograms to obtain a 4% leachate. When spraying, leaf back is dominant, and branches and young fruit can also be sprayed properly. Spraying in the windless and rainy evening is best. It can also be carried out from 8am to 10am. Usually sprayed once every 10 days to 15 days, 2-4 times in a row.
After re-injecting strong fruit fertilizer into the summer, it is necessary to apply topdressing once more with nitrogen fertilizer, supplemented with phosphorous and potassium fertilizers, and generally apply 20 kg of urea per mu, 15 kg of phosphate fertilizer and 10 kg of potassium fertilizer. The fertilization method can be applied deep into the ring or groove-like application method, and the soil can be filled with water after application.
After supplementing harvested fruit and harvesting grapes, the nitrogen fertilizer should be applied in time according to the growth of the plant. Spraying and rooting can be used. If both are combined, the effect is better. Spray once every 10 days Spraying once 0.3% urea or 0.2% potassium dihydrogen phosphate mixture, spraying 2-3 times; Root application of 10-15 kg urea per acre soaking root is appropriate.
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