摘要
为研究玉米冠层结构对种植密度的响应,采用郑单958和伟科702为试验材料,设置5个种植密度,不同生育时期测定叶面积、茎叶夹角、叶向值及其产量.结果表明:两年2个品种均在90000株/hm2密度下产量达到最高;叶面积指数随种植密度增加而增加,不同层位叶面积分布比例棒三叶上90000株/hm2密度下最大,棒三叶在75000株/hm2密度下最大,棒三叶下60000株/hm2密度下最高;不同层位茎叶夹角总体随种植密度增加而减小,叶向值随种植密度增加而增大.
To study the response of different planting densities to corn canopy structure,the leaf area index(LAI),the angle of stem to leaf,the leaf orientation value(LOV)and the yield of the corn numbered Zhengdan 958 and Weike 702 in five different planting densities were determined. Highest yields were obtained under the 90 000plants/hm2 planting the LAI increased with increase of planting density,the distribution proportion of LAI became the largest above 90 000 plants/hm2three-ear leaves,on 75 000 plants/hm2three-ear leaves and under 60 000 plants/hm2three-ear leaves. The angle of stem to leaf decreased with the increasing of planting density,while the LOV increased with the increase of planting densities.
出处
《内蒙古民族大学学报（自然科学版）》
2016年第4期298-301,共4页
Journal of Inner Mongolia Minzu University：Natural Sciences
基金
国家自然科学基金项目(30860134)
国家科技支撑计划项目(2013BAD04B04)
关键词
玉米
冠层结构
种植密度
Corn
Canopy structure
Planting densities
