The fundamental difference between organic vegetable production and conventional vegetable production is the difference in pests and weeds and the use of fertilizers, which are higher than conventional vegetable production. 1, fertilizer should not be applied too much. The application of micro-fertilizer in vegetables can make the vegetables produce high quality and high yield, but the amount of micro-fertilizer should be appropriate, and the amount of application of fertilizers exceeding the General Assembly will cause harm to vegetables. 2, ammonium nitrate and other nitrate nitrogen 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. 3, leafy vegetables avoid foliar spray nitrogen fertilizer. Because the vegetable leaves are sprayed with nitrogenous fertilizers, their ammonium ions are exposed to air, they are easily converted to acid ions and absorbed by the leaves. This, together with the short growing period of leafy vegetables, makes it easy to accumulate nitrates in the leaves. People eat them. Can easily cause food poisoning. 4, ammonium chloride, potassium chloride and other chlorinated fertilizers should not be applied to tomatoes, potatoes, carrots, white radish, sweet potatoes, yams, bulbs, 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. Aluminum Panel Security Door,Aluminum Security Door,Aluminium Security Doors,Aluminium Burglar Doors Zhejiang Tilanco Industry&Trade Group Co., Ltd , https://www.tilancogroup.com