提高作物光能利用率的潜力很大,其途径不外乎三条,即:提高单位面积的光合效率,增加光合面积,加长光合时间。此外,作物的经济产量还要决定于光合产物在植物中的转移分配与贮藏能力(库);除了作物本身遗传特性外,这种转移分配与贮藏能力(库)的大小在很大程度上也受制于上述的光能利用率的三个要素及其环境条件。许多世纪以来,人们曾设想通过提高单位叶面积的光合速率来增加产量。事实证明, The potential for improving the utilization of crop light energy is great, with no more than three ways: to increase photosynthetic efficiency per unit area, increase photosynthetic area, and increase photosynthetic time. In addition, the economic yield of a crop is also determined by the transfer, distribution and storage capacity of the photosynthate in the plant (pool); in addition to the genetic characteristics of the crop itself, the transfer distribution and storage capacity Subject to the above three factors of light energy utilization and its environmental conditions. For many centuries, people have envisioned increasing their production by increasing their photosynthetic rate per leaf area. Facts have proved that,