What do you pay attention to with foliar fertilizer for vegetables?

What do you pay attention to with foliar fertilizer for vegetables? There are no netizens to help introduce the farming network to sort out the matters needing attention in the application of foliar fertilizer for vegetables, which are listed below for netizens' reference. First, select fertilizers according to the types of vegetables: vegetables that are mainly edible stems and leaves, such as Chinese cabbage, kale, spinach, celery, bamboo shoots, leeks, etc., foliar fertilizer is generally dominated by water-soluble available fertilizers such as urea and ammonium sulfate, and the urea concentration is 2%. The concentration of ammonium sulfate is 0.3%, spraying 6080 kg per mu, and spraying 2 times during the whole growth period. Can also spray 0.3% 0.5% rice vinegar solution, 50-60 kg per mu is appropriate. Eggplant, pepper, tomato, zucchini, cucumber and beans, cowpea, kidney beans, etc., foliar fertilizer should be mainly nitrogen, phosphorus and potassium mixed fertilizer or multi-component compound fertilizer, such as 0.3% potassium dihydrogen phosphate, 1% urea plus 2% calcium superphosphate (leaching solution) plus 0.5% potassium sulfate solution and 0.08% rare earth micro fertilizer solution, Ye Mianbao, photosynthetic micro fertilizer, ammonium molybdate and other micro fertilizers. Generally, the compound multi-element fertilizer was sprayed on melons, fruits and vegetables for 2 times and 40 kg per mu during the whole growth period. For example, spraying sugar and 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 plants and reduce the harm of diseases such as vegetable downy mildew. Onion, garlic, radish, carrot, potato, taro and other vegetables, foliar fertilizer is generally based on phosphorus and potassium fertilizer, such as 0.3% potassium dihydrogen phosphate solution, calcium superphosphate and plant ash leaching solution. Root vegetables can be sprayed with 0.2% borax solution, which can effectively prevent the occurrence of physiological diseases. Spraying 0.1% zinc sulfate and 0.2% ammonium molybdate mixture on potatoes had a significant effect on tuber expansion and quality improvement. Pay attention to second, spray in the appropriate period: vegetable seedling stage, small growth, low nutrient consumption, and easy to occur fertilizer damage after spraying, should not be sprayed; vegetable stem and leaf growth is exuberant, root absorptive capacity is strong, foliar fertilization is not suitable. During the period of vegetable product organ formation, the root system decays, the absorption capacity is weakened, and the nutrient consumption is the highest, so this period is the best time to spray foliar fertilizer, which can effectively solve the contradiction between plant vegetative growth and reproductive growth. Click to get more foliar fertilizer application methods