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最大限度地利用太阳光能,不断提高光合作用效率,是实现农业现代化的重要标志之一。太阳幅射中,约有一半是光能。在实际生产中,落在农田上的光能,一部分被反射掉,一部分投于非光合器官,一部分投于地面,还有一部分在光合过程中或以后为呼吸作用所消耗。这类损失,即使作物因素与环境因素都处于最适状态也不能完全消除。近一、二十年,国内外对单位土地面积作物群体最高太阳光能利用率作理论计算,所得结果比较低的为12％。
To maximize the use of solar energy, and continuously improve the efficiency of photosynthesis, is an important symbol of agricultural modernization. About half of solar radiation is light energy. In actual production, the light energy that falls on the farmland is partially reflected, partly on non-photosynthetic organs, partly on the ground, and partly on respiration during or after photosynthesis. Such losses, even if the crop and environmental factors are in the best condition can not be completely eliminated. In the recent one or two decades, the sunshine solar energy utilization rate per unit area of land for crops has been theoretically calculated at home and abroad, and the result is relatively low at 12%.