摘要
以抗玉米粗缩病的稀植大穗型玉米新品种冀植5号为试材,研究了不同种植密度和追肥量以及生长期喷施矮壮素类化控药剂,对玉米农艺性状、产量性状和产量的影响。结果表明:冀植5号高产高效的适宜种植密度为5.25万株/hm2;在施用基肥的基础上,喇叭口期追施尿素450kg/hm2,产量较高且较为经济合算;生长期化控进行能明显降低株高、穗位高及倒折率,并具有增产效果。
The effects of planting density,fertilizing quantity and spraying chlormequat during growth period on the agronomic traits,yield traits and yield of a new large-size spike maize variety Jizhi No.5 resistant to maize rough dwarf disease were studied.The results showed that the suitable planting density was 52 500 plants/hm2.The yield was higher with base fertilizer and topdressing urea 450 kg/hm2 at bell stage.The chemistry control during growth period could obviously reduce the plant height,ear height and lodging percentage,and increase the yield.
出处
《河北农业科学》
2010年第8期1-3,共3页
Journal of Hebei Agricultural Sciences
基金
河北省自然科学基金(C2006000750)
国家科技部项目(2007GB2A200031)
关键词
冀植5号
密度
施肥量
化控
农艺性状
产量性状
产量
Jizhi No.5
Density
Fertilizing quantity
Chemical control
Agronomic traits
Yield traits
Yield
