肥料与密度对玉米新品种郧单22农艺性状及产量的影响  

Effects of Fertilizer and Density on Agronomic Characters and Yield of Maize Yundan 22

作　　者：周刚[1] 杨虎[1] 陈光勇[1] 李文品[1] 张世洪[1] 叶青松[1] 唐余成 徐星华[1] 许红霞 袁修华[1] ZHOU Gang;YANG Hu;CHEN Guang-yong(Shiyan Academy of Agricultural Sciences,Shiyan,Hubei 442000)

机构地区：[1]湖北省十堰市农业科学院,湖北十堰442000

出　　处：《安徽农业科学》2021年第4期43-45,55,共4页Journal of Anhui Agricultural Sciences

基　　金：湖北省省农业科技创新中心项目(2016-620-000-001-063)。

摘　　要：以玉米新品种郧单22为试验材料,研究肥料和密度对其主要农艺性状和产量的影响。结果表明,肥料和密度对郧单22的农艺性状和产量影响显著。在4个施肥水平中,复合肥750 kg/hm 2、尿素450 kg/hm 2水平处理的穗长、穗行、出籽率、千粒重、产量均达到最大值。密度对穗长、穗粗、穗行、行粒数、千粒重及产量均有显著影响,穗长、穗粗、行粒数、千粒重整体上均随着密度的增高而降低,产量却随着密度的增高而逐渐增加,当密度为60000株/hm 2时产量最高。不同种植密度、施肥量及二者之间的互作效应,导致产量存在显著差异。产量随着种植密度和施肥量的增加而增加,但是当密度和施肥量太高时,产量出现降低。农艺性状变化规律与产量变化有密切关系。综合考虑肥料和密度因子,最佳处理组合为复合肥750 kg/hm 2、尿素450 kg/hm 2,密度为60000株/hm 2。Effects of different fertilizer and density on main characters and yield of hybridmaize Yundan 22 were studied.Results showed that the fertilizer and density had obvious effects on the agronomic characters and yield of Yundan 22.In four fertilizer treatments,treatment of compound fertilizer 750 kg/hm 2 and urea 450 kg/hm 2 had the largest value in spike length,ear rows,seed rate,thousand-grain weight and yield.Density had significant impacts on the spike length,spike width,ear rows,grains per row,thousand-grain weight and yield.The spike length,spike width,grains per row,thousand-grain weight decreased as the density increased.But the yield enhanced as the density increased,the yield reached the highest when the density was 60000 plants/hm 2.The different planting density,fertilizing amount and their interaction make the output to have the very significant differences.Moderately increasing the density and fertilizer could increase production,which was to reduce when overdose.The variation of agronomic characteristics was related to yield of maize.The optimally treatment combination was compound fertilizer 750 kg/hm 2 and urea 450 kg/hm 2,the planting density was 60000 plants/hm 2.

关 键 词：玉米 郧单22 肥料 密度 农艺性状 产量 

分 类 号：S513[农业科学—作物学]