水稻冠层垂直反射率的品种间差异及其影响因素初步分析  

A Preliminary Analysis on Difference of Nadir Reflectance of Canopy and Its Affecting Factors in Different Rice Varieties

作　　者：徐正进[1] 陈温福[1] 张文忠[1] 马殿荣[1] 徐海[1] 

机构地区：[1]沈阳农业大学水稻研究所/农业部作物生理生态与遗传育种重点开放实验室/辽宁省北方粳稻育种重点实验室,沈阳110161

出　　处：《中国农业科学》2008年第9期2868-2872,共5页Scientia Agricultura Sinica

基　　金：国家自然科学基金(30370866);教育部博士学科点专项科研基金项目(20050157001)

摘　　要：【目的】揭示结实期冠层垂直反射率与群体和株型性状关系。【方法】以辽宁省56个水稻品种(品系)为试材进行田间试验。【结果】冠层垂直反射率存在显著而稳定的品种间差异,与颈穗弯曲度呈极显著的正相关,与比叶重和叶宽呈显著或极显著的负相关,与叶面积指数的关系有待进一步研究。【结论】颈穗弯曲度是影响冠层垂直反射率的主要因素,进一步揭示了直立穗型水稻品种产量潜力高的生理基础。[Objective] Revealing the relationships among nadir reflectance of canopy, population and plant type characters in grain-filling period. [Method] Fifty-six rice varieties were used as materials to study in a field experiment. [Result] The differences of nadir reflectance of canopy were significant and stable in different rice varieties. The nadir reflectance of canopy was in extremely significant positive correlation with the curvature of panicle neck, and in significant or extremely significant negative correlation with the leaf weight ratio and leaf width. The relationship between the nadir reflectance of canopy and leaf area index remained to be further researched. [Conclusion] The curvature of panicle neck was the main factor which affected the nadir reflectance of canopy. The physiological basis that yield potential of rice varieties with erect panicle type was high was further revealed.

关 键 词：水稻 冠层垂直反射率 直立穗型 光能利用 

分 类 号：S511[农业科学—作物学] X503.231[环境科学与工程—环境工程]