摘要
以先玉335为试验材料,设置5个种植密度,研究种植密度对风沙瘠薄农田区玉米主要农艺性状和产量的影响。结果表明,在不同的种植密度下,玉米的产量和农艺性状都有明显的差别,叶面积指数呈单峰曲线变化;随种植密度的增加,株高、穗长、穗粒数、百粒重呈逐渐降低趋势;空秆率、秃尖长、子粒容重呈增加趋势;随着密度的增加,玉米单产呈抛物线趋势,先增加后降低。
Effect of five different densities on agronomic characters and yield of ＇Xianyu 335＇ in sandy barren land were studied. The results showed that there were clear differences in agronomic characters among different planting densities. The leaf area index （LAI） changed as a single peak curve. With the increase of planting density, plant height, ear length, grains per spike and kernel weight gradually decreased, but the blank-stem rate, bare top length and grain bulk density increased. The yield showed a parabolic trend, i.e., increased at first and drop latter.
出处
《吉林农业科学》
CSCD
北大核心
2012年第6期1-3,16,共4页
Journal of Jilin Agricultural Sciences
基金
国家科技支撑计划(2009BADB3B05)
星火计划项目(2010GA660012)
关键词
密度
农艺性状
产量
Densities
Agronomic characters
Yield
