What are the principles and methods of fertilization of zucchini?

Fertilization should be based on organic fertilizers, supplemented by chemical fertilizers, and the principle of applying no more than 20 kg of pure nitrogen per mu . Fertilization method: base fertilizer: 3000 kg of high-quality decomposed organic fertilizer per acre , 10 kg of urea , 50 kg of superphosphate , and 8 kg of potassium sulfate . Top dressing: combined with watering, using ditch or hole application method, 13 kg of urea is applied in the initial stage of the melon , and 10 kg of urea is applied during the season . In the case of growing fruiting view, with 0.2% of potassium dihydrogen phosphate solution sprayed 1--2 times.
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