First, the application of high-quality organic fertilizer sufficient organic fertilizer, can continuously provide the nutrients needed for the entire growing period of vegetables, is conducive to the improvement of the quality of vegetables. Crop straw and livestock and poultry manure are the top raw materials for organic fertilizers. The crop stalks are crushed and then the fast rot agent is added, and the stacking is performed. The surface is sealed with mud, so that the fermentation temperature is maintained at 25° C. to 45° C., and generally 25 days or so can be used as a fertilizer. Can also be used in advance EM compost fermentation, per cubic meter of manure with EM exposed 1 kg plus 0.5 kg of brown sugar 20 kg of water, stir and let stand for 30 minutes, and then sprayed in semi-dry manure, used after turning The agricultural film package is strictly fermented, and the temperature should not exceed 45°C. For each mu of greenhouse vegetables, 16-20 cubic meters of fully organic fertilizer can be deep-dipping and applied twice (the first application of 2/3, the second application of 1/3). In order to prevent burns burned roots. For vegetable fields over 3 years old, when soil pH is less than 6, apply 80 kg lime powder, water and soil twice per acre; when soil pH is greater than 7, apply 50 kg twice per acre. Gypsum powder, water and soil. Second, the application of micro-fertilizer to increase the application of micro-fertilizer vegetables, can make high-quality and high-yield vegetables, but the amount of micro-fertilizer should be appropriate, the amount of application of excessive vegetables will cause harm. Acidic micro-fertilizers such as ferrous sulfate can not exceed 3.5 kilograms per mu, manganese sulfate can not exceed 2 kilograms per mu; basic micro-fertilizers such as copper sulfate can not exceed 2 kg per mu, and borax can not exceed 1.25 kg per mu. The amount of zinc per acre cannot exceed 1.25 kg; neutral micronutrients such as magnesium sulfate can be 0.5 kg per acre. Third, we must be cautious fertilizer ammonium nitrate and other nitrate-based fertilizer generally should not be applied to vegetables. Because nitrate-nitrogen fertilizers increase nitrate content in vegetables, nitrates are easily reduced to nitrite in the human body, which is harmful to the human body. Leafy vegetable vegetables should not be sprayed with nitrogenous fertilizer on the leaf surface. After spraying nitrogenous fertilizers on the leaves, the ammonium ions in the vegetables are easily converted into acid ions after being contacted with air, absorbed by the leaves, and the growing period of leafy vegetables is very short. Nitrates accumulate in the leaves and people are prone to food poisoning after eating. Ammonium chloride, potassium chloride and other chlorinated fertilizers should not be applied to tomatoes, potatoes, carrots, white radish, sweet potatoes, yams, bulbous fennel and so on. Because chlorinated fertilizers decompose in the soil, ammonium or potassium ions are absorbed by the soil or absorbed by the vegetables. When the concentration reaches a certain level, it will cause damage to the vegetable roots, and in severe cases it will cause the death of vegetables. Snacks usually refer to the food eaten outside the time point of three meals a day. Under normal circumstances, in people's life, except that three meals a day are called dinner food, the rest are called snacks. Snacks,Canned Lychee,Canned Peaches,Canned Fruit Xi'an Gawen Biotechnology Co., Ltd , https://www.agolyn-bio.com