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众所周知,农作物主要是通过植物绿色光合作用,将吸收的CO_2和水,变为碳水化合物等有机物质,将太阳的光能转化为有机能,以供人类利用。现已查明,植物在光合作用时,每吸收1克分子CO_2,制造1克分子碳水化合物,需要吸收400—500千卡太阳生理辐射光能,而转化为112千卡有机能。
It is well-known that crops mainly convert organic matter, such as CO 2 and water absorbed by plants into organic compounds such as carbohydrates, through the green photosynthesis of plants, so that they can be converted into organic energy for human use. It has been found that plants can absorb 1 to 4 grams of molecular carbohydrates each time they absorb 1 mole of molecular CO2 during photosynthesis and need to absorb 400-500 kcal of physiological solar radiation to convert them to 112 kcal.