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研究结果表明,生物产量的突破是水稻进一步高产的物质基础,实现这一目的除应通过株形改良和高产栽培来提高最适叶面积指数和延长冠层持续时间外,还应考虑提高品种的单叶光合速率。比叶重、含氮量、气孔密度和气体扩散阻力等叶片质量性状既与单叶光合效率有关,又便于在高产育种和高产栽培实践中应用,在目前尚无简单实用的单叶光合速率测试方法情况下,这些性状作为培育高单叶光合速率品种的间接指标是切实可行的。此外,本文还就群体最适叶面积指数和源库关系问题进行了讨论。
The results show that the breakthrough of bio-yield is the material basis for further high-yielding rice. To achieve this goal, in addition to improving the optimum leaf area index and prolonging the duration of canopy by plant improvement and high-yielding cultivation, Leaf photosynthetic rate. Specific leaf weight, nitrogen content, stomatal density and gas diffusion resistance and other leaf quality traits both single leaf photosynthetic efficiency, but also facilitate the application in high yield breeding and high yield cultivation practice, at present there is no simple and practical single leaf photosynthetic rate test In the case of the methods, these traits are viable as an indirect indicator of cultivating high single leaf photosynthetic rate varieties. In addition, the paper discussed the relationship between population optimum leaf area index and source and sink.