(1) urging vinegar: After the watermelon stretches, the top dressing can promote the rapid elongation of the vine, so it is called cranberry vinegar. Follow-up rush vinegar should be carried out before and after the plant dumping tap. Each application of cake fat 100 grams, or maturity of the manure and other high-quality fertilizer about 500. If fertilizer is applied, 10-15 grams of urea can be applied per plant. 30 grams of superphosphate and 15 grams of potassium sulfate. The method of application is: in the middle of two guava seedlings, open a top-dressing ditch with a depth of 10 cm, a width of 10 cm, and a length of about 40 cm. Apply the fertilizer, mix the fertilizer and the soil with a spatula, and then cover and seal the soil. If fertiliser is applied, the dressing trench can be smaller, 5-6 cm deep, 7-8 cm wide, and 30 cm long. Pour water one time after application to promote the absorption of fertilizer.
(2) Swelling melon fertilizer: that is, enter the expansion period. This top-dressing can promote the rapid expansion of fruit, it is called swelling melon. Swelling manure is usually applied twice. Each time when the baby's egg size (about 5 cm in diameter), on the side of the plant 30-40 cm from the root ditch, diammonium phosphate 225-300 kg, potassium sulfate 75-110 kg per hectare. Can also be combined with topdressing 7.5 tons of human waste. The second time the melon grows to the size of the bowl mouth, 80 kg of urea is recovered per hectare, and 60 kg of superphosphate and potassium sulfate are used respectively.
(2) Swelling melon fertilizer: that is, enter the expansion period. This top-dressing can promote the rapid expansion of fruit, it is called swelling melon. Swelling manure is usually applied twice. Each time when the baby's egg size (about 5 cm in diameter), on the side of the plant 30-40 cm from the root ditch, diammonium phosphate 225-300 kg, potassium sulfate 75-110 kg per hectare. Can also be combined with topdressing 7.5 tons of human waste. The second time the melon grows to the size of the bowl mouth, 80 kg of urea is recovered per hectare, and 60 kg of superphosphate and potassium sulfate are used respectively.
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