太阳辐射是地球上所有绿色植物进行光合作用的能量来源。生物产量(包括根、茎、叶、花、果、种子等)的90—95％是利用太阳辐射能通过光合作用将所吸收的CO_2和H_2O合成有机物,而根吸收的无机元素所占的比例很小。可见,植物生长发育和产量形成首先决定于太阳辐射,单位面积产量的高低,则取决于固定太阳辐射能的数量。所以如何通过改进栽培措施来改 Solar radiation is the source of energy for photosynthesis of all the green plants on Earth. 90-95% of biological yield (including roots, stems, leaves, flowers, fruits, seeds, etc.) is the proportion of inorganic elements absorbed by the roots by photosynthesis of CO 2 and H 2 O absorbed by solar radiation Very small. Can be seen that plant growth and yield formation depends on the first solar radiation, yield per unit area, then depends on the number of fixed solar radiation. So how to improve the cultivation measures to change