不同穗型水稻群体垂直入射光分布及其对光合作用的影响  

Analysis of Perpendicular Incident Light in Rice Population of Different Panick Morphology and Its Effect on Photosynthesis

作　　者：孟军[1] 陈温福[1] 

机构地区：[1]沈阳农业大学水稻研究所,沈阳110161

出　　处：《沈阳农业大学学报》2005年第1期9-13,共5页Journal of Shenyang Agricultural University

基　　金：国家"863"项目(2001AA241014);辽宁省自然科学基金项目(2001101011)

摘　　要：依据推导的水稻上三叶截获垂直入射光的模型,并结合叶面光强与光合速率的经验公式对上三叶光合作用理论值进行了分析,结果表明:穗的直立或弯曲是决定垂直入射光在群体内分布及其对应的上三叶总光合作用的关键性状。直立穗型水稻沈农265株形好,具有较高的光合作用理论值,如果将辽粳294的叶型与沈农265的穗型相结合,有可能通过密植提高上三叶光合作用量,达到增产的目的。A perpendicular incident light capture model of rice up three leaves was proposed. By combining it with experiential model of luminous flux to photosynthesis rate of the leaves, analysis of theoretical photosynthesis value of up three leaves was made. The result showed that curve of the panicle was the key factor that affects perpendicular incident light distribution and its related photosynthesis of up three leaves. Shennong265 has excellent morphological characters, and high theoretical value of photosynthesis. Combining big erect panicle of Shennong265 with leaf type of Liaojing294 improved photosynthesis of up three leaves by dense planting, which may reach the goal for high yield.

关 键 词：光合作用 垂直入射 水稻群体 光分布 沈农265 辽粳294 经验公式 光合速率 体内分布 直立穗型 入射光 理论值 作用量 截获 叶面 株形 密植 

分 类 号：S511[农业科学—作物学] Q945.11[生物学—植物学]