宽窄行种植方式对玉米光截获和辐射利用效率的影响  

The Effect of Wide-narrow Row Planting Pattern on Light Interception and RUE of Maize

作　　者：刘铁东[1,2] 宋凤斌[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所,吉林长春130012 [2]中国科学院研究生院,北京100049

出　　处：《华北农学报》2011年第6期118-123,共6页Acta Agriculturae Boreali-Sinica

基　　金：中国科学院重大知识创新项目资助(KSCX2-YW-N-077)

摘　　要：种植方式影响玉米对光的截获和辐射利用效率进程。在本研究中,采用如下两种种植模式:宽窄行KZ:30+170和匀垄CK65,密度均为6.4株/m2。测量了玉米生长发育阶段的生理机能,对比了不同种植模式下玉米的光截获分数(F)、叶面积指数(LAI)、消光系数(K)、辐射利用效率(RUE),两种模式中,K值呈现出KZ>CK的特征;F值在KZ中显著低于CK,而两种种植方式间叶面积指数没有显著的差异;两种方式的RUE表现为KZ>CK。结果表明,尽管宽窄行种植截获了较少的有效辐射,但冠层中的光环境得到改善,辐射利用效率有明显的提升。Planting pattern affects maize on light availability.Our aim was to explore the processes that how planting patterns did affect light interception and RUE.In this study,maize were planted in two patterns as follows：narrow-wide row 40＋160（KZ,6.4 plants/m2）,uniform row 65（CK,6.4 plants/m2）,we examine the mechanisms of maize canopy during canopy development period.three planting patterns were compared in fraction of light interception（F）,leaf area index（LAI）,extinction coefficient（K）,radiation use efficiency（RUE）.The result showed that,the parameter of F in KZ was significant lower than CK,while LAI was observed almost equal to CK;the K values exhibit a feature of CKKZ;the advantage of RUE in KZ was manifest at the same density（6.4 plants/m2）among different treatments.We concluded that in same density,planting pattern had significant effect on light interception and RUE.

关 键 词：玉米 种植方式 光截获 辐射利用效率 

分 类 号：S513.01[农业科学—作物学]