Which chemical fertilizers should not be applied to vegetables?
January 29 16:18:47, 2021
Ammonium nitrate other nitrate nitrogen fertilizer generally should not be applied to vegetables, nitrate nitrogen fertilizer applied to the vegetable field will make the nitrate content in vegetables multiplied, nitrate is easily reduced to nitrite in the human body, nitrite is A highly toxic substance that is extremely harmful to the human body. Ammonium chloride, potassium chloride and other chlorinated fertilizers are not suitable for application to tomato and potato. The chlorine-containing fertilizer is decomposed in the soil. Ammonium or potassium ions are absorbed by the soil or absorbed by vegetables. When the concentration reaches a certain level, the root system will Poisoning occurs. Severe vegetables can cause death. Leafy vegetable vegetables avoid foliar nitrogen fertilizer vegetable foliar spray nitrogen fertilizer, its ammonium ion and air contact, easily converted to acid ions absorbed by the leaves, coupled with leafy vegetables short growth period, it is easy to make nitrate accumulation in Leaves inside. Therefore, avoid spraying nitrogen fertilizer on leaves of vegetable vegetables. Applying micro-fertilizer to vegetables can promote the high quality and high yield of vegetables, but the demand for microelements in vegetables is very small. Excessive application of fertilizers not only causes waste, but also produces poisoning to the crops and pollutes the environment. The amount of ferrous sulfate per mu cannot exceed 3.25 kg. The consumption of manganese sulfate and manganese chloride per month cannot exceed 2.05 kg. Copper sulfate cannot exceed 2 kg per mu. The amount of borax and boric acid per mu cannot exceed 1.25 kg.