Ammonium nitrate other nitrate nitrogen fertilizers are generally not suitable for application to vegetable nitrate ammonia fertilizer. When applied to vegetable fields, the nitrate content in vegetables is doubled. Nitrate is easily reduced to nitrite in human body. Nitrite is A highly toxic substance that is extremely harmful to the human body.
Ammonium chloride, potassium chloride, etc. containing chlorinated fertilizer, not suitable for application to tomato, potato chlorine-containing fertilizer decomposition in large soil, ammonium or potassium ions will be adsorbed by large soil or absorbed by vegetables, when the concentration reaches a certain level, will Vegetable roots are poisonous and can cause serious vegetable deaths.
Leafy vegetables bogey, noodles, nitrogen fertilizer, vegetable leaves, sprayed with nitrogen fertilizer, the ammonium ions are easily converted into acid ions and are absorbed by the leaves after contact with air, and the leafy vegetables have a short growth period, which makes it easy to accumulate nitrate. Within the leaves. Therefore, avoid spraying ammonia on the leaf surface of leafy vegetables.
The application of micro-fertilizers in vegetables can promote high-quality and high-yield vegetables, but the demand for trace elements in vegetables is extremely small. Excessive application of fertilizer not only causes waste, but the county is prone to poisoning and polluting the environment. The amount of ferrous sulfate per acre should not exceed 3.25 kg. The monthly dosage of manganese sulfate and manganese chloride cannot exceed 2.05 kg. Copper sulfate should not exceed 2 kg per mu. Borax and boric acid should not exceed 1.25 kg per acre.
Ammonium chloride, potassium chloride, etc. containing chlorinated fertilizer, not suitable for application to tomato, potato chlorine-containing fertilizer decomposition in large soil, ammonium or potassium ions will be adsorbed by large soil or absorbed by vegetables, when the concentration reaches a certain level, will Vegetable roots are poisonous and can cause serious vegetable deaths.
Leafy vegetables bogey, noodles, nitrogen fertilizer, vegetable leaves, sprayed with nitrogen fertilizer, the ammonium ions are easily converted into acid ions and are absorbed by the leaves after contact with air, and the leafy vegetables have a short growth period, which makes it easy to accumulate nitrate. Within the leaves. Therefore, avoid spraying ammonia on the leaf surface of leafy vegetables.
The application of micro-fertilizers in vegetables can promote high-quality and high-yield vegetables, but the demand for trace elements in vegetables is extremely small. Excessive application of fertilizer not only causes waste, but the county is prone to poisoning and polluting the environment. The amount of ferrous sulfate per acre should not exceed 3.25 kg. The monthly dosage of manganese sulfate and manganese chloride cannot exceed 2.05 kg. Copper sulfate should not exceed 2 kg per mu. Borax and boric acid should not exceed 1.25 kg per acre.
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