To ensure the safe production of vegetables, pay attention to the following four points when fertilizing:
I. Avoid applying nitrate-nitrogen fertilizer to vegetables. After applying nitrate-nitrogen fertilizer, the nitrate content in vegetables will increase exponentially. Vegetables with high nitrate content are easily degenerated by human hemoglobin after being eaten by humans, and the brain, heart and other organs are deprived of oxygen. Therefore, in the cultivation of vegetables, it is not allowed to apply nitrate nitrogen fertilizer, and ammonium nitrogen fertilizer can be selected.
2. Apply chlorine-containing fertilizers to the vegetable fields with chlorine-containing fertilizers. When the ammonium and potassium ions are absorbed by the soil or absorbed by the crops, the chloride ions will remain in the soil. When the concentration reaches a certain level, it will poison the crop roots, reduce the starch and sugar content of the vegetables, and even lead to plant death.
Third, avoid applying uncooked and decomposed fresh manure and urine. Ascaris eggs have strong living ability in the outside world and generally survive for 3 to 6 months. When people eat vegetables contaminated with mites, they become infected with tsutsugamushi. Therefore, human excrement must be suffocated by high temperature before application, so that it is fully decomposed.
4. When the soil is dry, the vegetables that are not fertilized are hi-water crops. When the soil is dry, fertilization can not only fully exert the fertilizer effect, but also cause the root-burning phenomenon when the concentration of the soil solution suddenly rises.
Huaxian Agricultural Technology Promotion Center: Li Dongxia
I. Avoid applying nitrate-nitrogen fertilizer to vegetables. After applying nitrate-nitrogen fertilizer, the nitrate content in vegetables will increase exponentially. Vegetables with high nitrate content are easily degenerated by human hemoglobin after being eaten by humans, and the brain, heart and other organs are deprived of oxygen. Therefore, in the cultivation of vegetables, it is not allowed to apply nitrate nitrogen fertilizer, and ammonium nitrogen fertilizer can be selected.
2. Apply chlorine-containing fertilizers to the vegetable fields with chlorine-containing fertilizers. When the ammonium and potassium ions are absorbed by the soil or absorbed by the crops, the chloride ions will remain in the soil. When the concentration reaches a certain level, it will poison the crop roots, reduce the starch and sugar content of the vegetables, and even lead to plant death.
Third, avoid applying uncooked and decomposed fresh manure and urine. Ascaris eggs have strong living ability in the outside world and generally survive for 3 to 6 months. When people eat vegetables contaminated with mites, they become infected with tsutsugamushi. Therefore, human excrement must be suffocated by high temperature before application, so that it is fully decomposed.
4. When the soil is dry, the vegetables that are not fertilized are hi-water crops. When the soil is dry, fertilization can not only fully exert the fertilizer effect, but also cause the root-burning phenomenon when the concentration of the soil solution suddenly rises.
Huaxian Agricultural Technology Promotion Center: Li Dongxia
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Ling Feng Aluminum Co., Ltd. , http://www.nbaluminum.com