1, Yelai vegetables such as cabbage, spinach, celery, etc. need more nitrogen, spray fertilizer should be mainly urea, ammonium sulfate, spray concentration of urea is 1% to 2%, ammonium sulfate is 1.5%. Spraying 2 to 4 times per season is preferred for spraying in the early stage of growth.
2, melon and fruit vegetables such as pepper, eggplant, tomato, beans and various melons, the need for NPK is relatively balanced, should use NPK mixed solution or compound fertilizer. It can be sprayed with 1% to 2% urea and 0.3% to 0.4% potassium dihydrogen phosphate mixed solution, or 2% compound fertilizer solution, usually sprayed once or twice in the pre-growth and late stages. Spraying in the later stage can prevent premature aging, enhance stamina, and have a good yield increase effect.
3, root vegetables, garlic, onions, radish, potatoes, etc. need more phosphorus, potassium fertilizer can choose 0.3% potassium dihydrogen phosphate solution, 10% grass ash leaching solution. It is usually sprayed 3 times to 4 times per season, and the effect is good.
Spraying foliar fertilizer is best when the afternoon sun is not too strong on cloudy or sunny days. According to the amount of vegetable growth, 30 kg to 50 kg per mu of spray fertilizer is used to limit the spray on the foliage. According to the demand of different vegetables for trace elements, appropriate amount of micro-fertilizer can be added to increase the yield and improve the quality, but the spraying concentration should not be too high; add pesticides and pests and diseases as needed, save labor and effect , but avoid acid and alkali neutralization.
2, melon and fruit vegetables such as pepper, eggplant, tomato, beans and various melons, the need for NPK is relatively balanced, should use NPK mixed solution or compound fertilizer. It can be sprayed with 1% to 2% urea and 0.3% to 0.4% potassium dihydrogen phosphate mixed solution, or 2% compound fertilizer solution, usually sprayed once or twice in the pre-growth and late stages. Spraying in the later stage can prevent premature aging, enhance stamina, and have a good yield increase effect.
3, root vegetables, garlic, onions, radish, potatoes, etc. need more phosphorus, potassium fertilizer can choose 0.3% potassium dihydrogen phosphate solution, 10% grass ash leaching solution. It is usually sprayed 3 times to 4 times per season, and the effect is good.
Spraying foliar fertilizer is best when the afternoon sun is not too strong on cloudy or sunny days. According to the amount of vegetable growth, 30 kg to 50 kg per mu of spray fertilizer is used to limit the spray on the foliage. According to the demand of different vegetables for trace elements, appropriate amount of micro-fertilizer can be added to increase the yield and improve the quality, but the spraying concentration should not be too high; add pesticides and pests and diseases as needed, save labor and effect , but avoid acid and alkali neutralization.
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