摘要
以郑单958为试验材料,采用裂裂区设计,分别在75 000,90 000,105 000株·hm-23个种植密度下,研究了密度与种植方式对夏玉米郑单958叶绿素、荧光及其产量的影响。结果表明,展开叶叶面积指数,穗位叶叶绿素含量均随着密度的增加呈现单峰曲线变化的趋势。在密度一定的条件下,种植方式的改变,增加了光能的利用效率;高密度条件下,宽窄行双株种植改善群体结构,明显增加光合作用面积,提高群体光能利用率,有效增加高密度下玉米产量的潜力。
To investigate the effects of the density and planting patterns on chlorophyll,fluorescence and yield of summer maize Zhengdan 958,a field experiment was carried out with different plant population densities（ 7. 5 ×104,9. 0 × 104,1. 05 × 104 plants · hm- 2） using a split-split plot design. The results showed that with the increase of planting density,LAI of extended leaves and chlorophyll content of ear leaf displayed a single peak variation curve. Under certain density,changes in planting pattern could increase the use efficiency of light energy. Under high density condition,the method of double strains cultivation with wide-narrow row spacing improved population structure,significantly increased photosynthetic area,enhanced group light energy utilization,advancing the production potential of corn under high density.
出处
《干旱地区农业研究》
CSCD
北大核心
2016年第5期85-90,共6页
Agricultural Research in the Arid Areas
基金
河南省基础与前沿技术研究计划(30200063)
科技支撑计划(2012BAD04B07
2011BAD16B07)
关键词
玉米
密度
种植方式
叶绿素
荧光
Maize
thickness
planting patterns
chlorophyll
fluorescence
