Chemical fertilizers can help farmers increase production and income, but if they are not used properly, they may cause great troubles. Not only will they have adverse effects on crops, but they may even appear toxic and harmful substances. Some fertilizers should be used with caution in vegetables.
Nitrogen fertilizer
Ammonium nitrate and other nitrate nitrogen fertilizers are generally not suitable for vegetables. The application of nitrate nitrogen fertilizer in vegetable fields will increase the nitrate content in vegetables exponentially. Nitrate is easily reduced to nitrite in the human body. Nitrite is a highly toxic substance, which is extremely harmful to the human body.
Chlorine-based fertilizer
A compound fertilizer containing two components, ammonium chloride and potassium chloride, is called a double-chloride compound fertilizer and should not be applied to tomatoes or potatoes. After the decomposition of the double chlorine fertilizer in the soil, ammonium or potassium ions will be adsorbed by the soil or absorbed by the vegetables. When the concentration reaches a certain level, it will cause toxicity to the roots of the vegetables, which will seriously cause the death of vegetables. However, low-chlorine (referring to only potassium chloride) compound fertilizer can effectively supplement the chlorine element, can promote the growth of tomatoes and potatoes, and can be used reasonably to increase production.
Nitrogen fertilizer
Leafy vegetables should not be sprayed with nitrogen fertilizer. When vegetable leaves are sprayed with nitrogen fertilizer, their ammonium ions are easily converted into acid ions after being contacted with air, and absorbed by the leaves. In addition, the short growth period of leafy vegetables makes it easy for nitrate to accumulate in the leaves. Therefore, avoid spraying nitrogen fertilizer on leafy vegetables.
Micro-fertilizer
The application of micro-fertilizers in vegetables can promote high-quality and high-yield vegetables, but the demand for trace elements in vegetables is very small. Excessive application of micro-fertilizers is not only a waste, but also toxic to crops and polluting the environment.
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