摘要
采用裂区设计,研究了在高肥水条件下紧凑型玉米品种(郑单958)和平展型玉米品种(豫玉25号)的产量和主要生理指标随密度变化的规律。结果表明,紧凑型玉米品种的产量极显著地高于平展型玉米品种;密度对产量的影响和品种与密度互作均达极显著水平。郑单958在90000株/hm2时产量最高,豫玉25号在45000株/hm2时产量最高。在最高产量时,紧凑型玉米品种与平展型玉米品种相比具有叶面积指数大,干物质积累数量大,经济系数高等特点。
The relations between corn variety were studied by usi yield of compact type corn varie The influences density on yield densities of crop and yield or main physiologcal index of different types of ng the split plot design under condition of enough fertilizer and water.The ty Zhendan 958 was much higher than loosely type corn variety Yuyu 25. of interaction between density and variety reached significant level. When Zhengdan 958 and Yuyu 25 had density of 90000 plants/hm^2 and 45000plants/hm^2, they got highest yield. At same time, the leaf area coefficient, dry matter accumulation and economic coefficient of compact type corn variety is bigger than loosely type corn variety.
出处
《中国农学通报》
CSCD
2006年第5期171-173,共3页
Chinese Agricultural Science Bulletin
基金
国家农业科技成果转化基金项目"优质高产玉米新品种郑单958
郑单18示范及其配套技术研究"(编号:02EFN214100384)。
关键词
夏玉米
密度
紧凑型
平展型
Summer corn, Density, Compact type, Loosely type
