Carbon dioxide is considered by many as the culprit of the greenhouse effect and is a harmful waste gas. But Xu Welfare, a researcher and fertilizer expert at the Institute of Soil and Water Conservation at the Chinese Academy of Sciences, said that carbon dioxide can be recycled as fertilizer. The traditional concept is that the balance of nitrogen, phosphorus and potassium is the key to plant nutrition, but in fact, they are only the key to plant mineral nutrition. The key to plant nutrition should be carbon, oxygen, and hydrogen three elements, but because these three elements are not measured, it has caused misunderstanding on people's understanding. From this perspective, carbon dioxide is actually a valuable agricultural fertilizer. Plants absorb carbon dioxide and water and convert it to glucose through photosynthesis. Glucose is hydrolyzed into organic acids, converted to amino acids by immobilized ammonium nitrogen, and further converted into proteins. The concentration of carbon dioxide in the atmosphere is about 0.03%. When the concentration of carbon dioxide in greenhouses is 2 to 3 times higher than in the atmosphere, most vegetable production can be doubled. Not only that, the sufficient concentration of carbon dioxide can bring Vegetables to the market, reduce the amount of pesticides, inhibit the denitrification of nitrate nitrogen, and improve crop quality. Therefore, the use of carbon dioxide to develop carbon-based fertilizers is entirely feasible, not only can increase crop yields, but also can significantly reduce carbon dioxide, to achieve the purpose of developing low-carbon agriculture. Shaanxi provincial agricultural experts Liu Changyou and Zhuo Zefan started carbon-based fertilizer research in 2000. They believe that there are four possible ways to develop carbon-based fertilizers using carbon dioxide as raw materials: First, develop saturated carbon dioxide solution fertilizers that are sprayed or drip-irrigated when sunlight is strong and without wind, and if this solution is added with appropriate amounts of potassium, Magnesium can further promote the photosynthesis of plants; the second is the direct use of carbon dioxide, that is, carbon dioxide is collected and stored in steel cylinders or large gas cabinets and directly supplied to greenhouses; thirdly, carbon dioxide is compressed into liquid fertilizers; Carbon-based potash fertilizer, nitrogen fertilizer, and phosphate fertilizer.
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