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Leafy vegetables are vegetables dominated by edible stems and leaves, such as Chinese cabbage, cabbage, spinach, celery, bamboo shoots, leeks and other vegetables. Foliar fertilizers are mainly water-soluble quick-acting fertilizers such as urea and ammonium sulfate, and the urea concentration is 2 %, ammonium sulfate concentration is 0.3%, spraying 60-80 kg per acre, spraying 2 to 3 times in the whole growth period, or spraying 0.3%-0.5% rice vinegar solution, spraying 50-60 kg per acre should.
Melon, eggplant vegetable eggplant, pepper, tomato, zucchini, cucumber and beans, kidney beans, kidney beans, etc., foliar fertilizer should be based on NPK fertilizer or multi-component fertilizer, such as 0.3% potassium dihydrogen phosphate, 1% urea plus 2% superphosphate (leaching solution) plus 0.5% potassium sulfate solution and 0.08% rare earth micro-fertilizer solution, foliar treasure, photosynthetic micro-fertilizer, ammonium molybdate and other micro-fertilizers. Generally, it is sprayed 2 to 3 times in the whole growth period, spraying 40 to 50 kilograms per acre, and the effect of spraying the compounded multi-element fertilizer on the melon and fruit vegetables is remarkable. For example, spraying sugar nitrogen solution (0.2% urea plus 0.3% potassium dihydrogen phosphate plus 1% sucrose) can not only increase the yield, but also significantly increase the disease resistance of the plant and reduce the damage of diseases such as vegetable downy mildew.
Bulbs, root vegetables, onions, garlic, radish, carrots, potatoes, taro and other vegetables, foliar fertilizers are generally based on phosphorus and potassium fertilizers, such as 0.3% potassium dihydrogen phosphate solution, superphosphate and grass ash immersion liquid. Root vegetables can be sprayed with 0.2% borax solution, which can effectively prevent the occurrence of physiological diseases. Potato spraying 0.1% zinc sulphate plus 0.2% ammonium molybdate mixture has a significant effect on tuber swelling and quality improvement.
How to choose vegetable foliar fertilizer
According to different crops, the scientific selection and configuration of foliar fertilizer is the key to improve the application effect.
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