摘要
本文利用正交回归旋转设计,以目前生产上推广应用的紧凑型玉米杂交种豫玉2号、豫玉5号为代表,两年在6个试点作了8次群体结构试验。结果表明,在亩产650～700公斤条件下,紧凑型玉米杂交种的适宜种植密度为5000～5500株/亩,最适播种行距为60cm 左右。密度和行距对紧凑型玉米杂交种的植株性状和产量均有较大影响。并指出在当前生产条件下,适当增加种植密度,缩小播种行距是提高紧凑型玉米杂交种产量的重要措施。
The population structure of compact corn hybrid Yu Yu 2 and Yu Yu 5 havebeen investigated in six experimental stations in 1988 and 1989 by using the or-thogonal regression gyration design.Results show that plant density and dista-nce between rows exert considerable influence on the yield and plant characte-rs.The desirable stand is 5000～5500 plants per mu and the optimum distancebetween each two rows is 60cm under the yield level of 600～700 kg/mu.In-creasing plant density and reducing row distance adequately are considered a g-ood way to raise the yield.
出处
《河南农业大学学报》
CAS
CSCD
1990年第1期43-48,共6页
Journal of Henan Agricultural University
关键词
玉米
杂交种
密植
群体结构
maize
rational close planting
regression analysis
