What is the effect of chemical fertilizer on the increase of grain production?
Mr. Ji of Jianli County, Hubei Province, asked: How large is the effect of chemical fertilizer on grain production? Can rational use of chemical fertilizers also contribute to environmental protection and improve soil fertility?
A: The high yield of crops is related to various factors such as fertilization, irrigation, and improved varieties. Among them, the contribution rate of chemical fertilizers to grain production is 50%, that is, 100 kg of grain per acre is increased, and about half is the result of applying chemical fertilizers. Under the current conditions in our country, 1 kg of fertilizer can increase grain production by an average of 7.5 kg. Not only that, because of the promotion of green plants, but also through the photosynthesis can be fixed net carbon dioxide 22 kg, 16 kg of net release of oxygen, increase organic nutrients 1 kg. This is a great contribution to curbing climate warming, improving air quality and improving soil fertility. (This issue of experts: Senior Advisor of Sinofert and Professor Wang Xingren of China Agricultural University)
Vitamins are organic compounds and vital nutrients that an organism requires in limited amounts. An organic chemical compound (or related set of compounds) is called a vitamin when the organism cannot synthesize the compound in sufficient quantities, and it must be obtained through the diet.
Your body needs them to work properly, so you grow and develop just like you should. They are essential for the normal growth and development of a multicellular organism. Once growth and development are completed, vitamins remain essential nutrients for the healthy maintenance of the cells, tissues, and organs that make up a multicellular organism; they also enable a multicellular life form to efficiently use chemical energy provided by food it eats, and to help process the proteins, carbohydrates, and fats required for respiration.
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