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水稻群体的光合作用与物质生产是水稻产最形成的基础。在水稻高产育种和高产栽培中,人们所做的一切努力,最终都是为了尽量提高水稻的光合效率和物质生产能力。从理论上看,提高群体光合效率的可能途径:(1)增加叶面积;(2)提高单位叶面积净光合速率;(3)两者同时并重。近年来,由于株型育种理论和实践的深入发展,水稻品种的最适叶面积指数有了很大提高,因而生产潜力明显增加。已有的研究结果表明,高产水稻群体的最适叶
Photosynthesis and material production of rice are the most formed basis for rice production. In the high-yield breeding and high-yielding cultivation of rice, all the efforts made by people are ultimately aimed at maximizing the photosynthetic efficiency and material productivity of rice. In theory, the possible ways to improve the photosynthetic efficiency of the population are as follows: (1) to increase the leaf area; (2) to increase the net photosynthetic rate per unit leaf area; and (3) to combine both. In recent years, due to the in-depth development of the theory and practice of plant type breeding, the optimum leaf area index of rice varieties has been greatly increased, and the production potential has increased significantly. The existing research results show that the optimum leaf yield of high-yielding rice population