密度对饲用玉米光合特性和产量的影响  

Effects of density on photosynthetic characteristics and yield of silage maize

作　　者：孔宇[1] 王霞[2] 杨亮[1] 赵宏伟[1] 

机构地区：[1]东北农业大学农学院,哈尔滨150030 [2]穆棱市农业技术推广中心,穆棱黑龙江157500

出　　处：《东北农业大学学报》2009年第3期16-20,共5页Journal of Northeast Agricultural University

基　　金：东北农业大学博士后基金

摘　　要：以饲用玉米品种为材料，研究整个生长发育过程中不同密度对叶面积指数、叶绿素、比叶重的影响，揭示光合生理指标与产量之间的关系，进而对产量进行调控。结果表明，在部分生育时期玉米叶面积指数、比叶重随密度的增加而增大，叶绿素含量拔节期～灌浆期均随密度的增大而减小，不同生育时期3个指标与产量之间相关性不一致。The experiment was carried out to study effects of density on LAI, chlorophyll content and leaf area/leaf dry weight with silage maize in order to explore the relationship between photosynthetic characteristics and yield of silage maize. The results showed that LAI and leaf area/leaf dry weight increased following density dosage increasing at some growth stages, chlorophyll content decreased following density dosage increasing. Relationships of three indexes correlated with the yield of silage maize were inconsistent at different growth stages.

关 键 词：饲用玉米 叶面积指数 叶绿素含量 比叶重 

分 类 号：S513[农业科学—作物学]