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二氧化碳能给作物提供碳素营养,它是一切植物的生命基础。根据测定,植物体的干物质中有百分之九十是有机化合物,而有机物构成中碳素约占有机化合物重量的百分之四十五。二氧化碳是作物的食粮,作物生长发育依赖于体内的有机化合物,这些有机化合物是作物的叶子等绿色器官吸收二氧化碳通过光合作用制造出来的。增施氮、磷、钾等矿物肥料所以能够增产,并不是这些肥料的直接作用,而是通过提高单位时间内吸收二氧化碳的量,增加光合作用的面积和延长绿色部分光合作用持续
Carbon dioxide provides carbon nutrition to crops, which is the lifeblood of all plants. It has been determined that 90% of the dry matter in plant material is organic compounds, while organic carbon constitutes about 45% of the weight of organic compounds. Carbon dioxide is the food of crops. The growth and development of crops depend on the organic compounds in the body. These organic compounds are produced by photosynthesis of carbon dioxide absorbed by green organs such as leaves of crops. Increasing nitrogen, phosphorus, potassium and other mineral fertilizers so that it can increase production is not the direct effect of these fertilizers. Rather, it increases the amount of carbon dioxide absorbed per unit time, increases the area of photosynthesis and prolongs the green part of photosynthesis