水稻开花灌浆期阴天影响产量构成的光质环境分析  

Analysis of the Environment of Light Quality for the Effects of Cloudy Days on Rice Yield Formation during Flowering Filling Period

作　　者：李林[1,2] 姚永康[1,2] 刘敏华[1,2] 唐银凤[1,2] 张更生[1,2] 

机构地区：[1]江苏省农业科学院农业现代化研究所 [2]安徽农业大学农学系

出　　处：《江苏农业学报》1997年第3期139-142,共4页Jiangsu Journal of Agricultural Sciences

基　　金：国家自然科学基金

摘　　要：通过对水稻开花灌浆期自然阴天与模拟阴天可见光中光谱辐射能变化特征的比较，以及在模拟阴天与晴天条件下，水稻群体吸收光谱辐射能的差异分析，揭示了模拟阴天条件下光谱辐射能减弱对水稻植株光合速率的影响，阐明了模拟阴天（或自然阴天）使水稻群体吸收蓝光（４００～５１０ｎｍ）和红光（６１０～７２０ｎｍ）辐射能的大幅度减少是导致水稻产量下降的重要光质原因。By comparing the characteristics of radiant energy variation of spectrum in cloudy days with under simulated cloudy conditions during flowering filling period of rice crop and analysing the difference of the absorption spectrum radiation of rice colony under simulated cloudy days and sunny days, the different effects of reduced radiant energy on photosynthetic rate for rice in the simulated cloudy days were exposed. Results show that the sharp decrease of blue light (400-510 nm) and red light(610-720 nm) absorption in rice colony under the simulated cloudy days(or cloudy days) is the cause of light quality causing the lowering of rice yield.

关 键 词：阴天 水稻 产量 光质 

分 类 号：S511.01[农业科学—作物学]