种植密度对不同夏玉米品种植株性状及产量影响  

Effect of Planting Density on Plant Characters and Yield of Different Summer Maize Varieties

作　　者：杜小娟 杨林 岳前进 张仁和[3] 李瑞国 冯刚 郭龙 DU Xiaojuan;YANGLin;YUE Qianjin;ZHANG Renhe;LI Ruiguo;FENGG ang;GUO Long(Jingyang Agricultural Technology Extension Center,Jingyang,Shaanxi 713700,China;Shaanxi Agricultural Technology Extension Station,Xi'an,Shaanxi 71000,China;College of Agronomy,Northwest A&F University Yangling,Shaanxi 712100,China;Xianyang Academy of Agricultural Sciences,Xianyang,Shaanxi 712034,China)

机构地区：[1]泾阳县农业技术推广中心,陕西泾阳713700 [2]陕西省农业技术推广总站,陕西西安710000 [3]西北农林科技大学农学院,陕西杨凌712100 [4]咸阳市农业科学研究院,陕西咸阳712034

出　　处：《陕西农业科学》2023年第9期38-43,共6页Shaanxi Journal of Agricultural Sciences

摘　　要：2019-2021年连续3年在陕西省泾阳县试验示范基地选取不同类型夏玉米品种,研究了4种密度对植株性状和产量的影响,探索各品种在关中灌区最佳种植密度。结果表明:各品种同一年度间株高、穗位、倒伏率、倒折率和空秆率随种植密度的增加有增高趋势,穗行数、行粒数和穗粒数有降低趋势,在4.5万株/hm^(2)和6.0万株/hm^(2)密度条件下百粒重较大。关中灌区陕单650最佳种植密度为7.5~9.0万株/hm^(2),郑单958最佳种植密度为6.0~7.5万株/hm^(2),陕单609最佳种植密度为9.0万株/hm^(2),东单60最佳种植密度为6.0~7.5万株/hm^(2)。In order to explore the effects of four planting densities on plant characters and yield of maize,different summer maize varieties were planted on the test and demonstration base in Jingyang County,Shaanxi Province from 2019 to 2021.The optimal planting density of each variety in Guanzhong irrigation area was investigated.The results showed that plant height,ear height,lodging rate,folding rate and bare plant rate increased with the increase of planting density,while ear row number,grain number per row and grain number per spike decreased,the 100-seed weight was higher at the densities of 45 and 60 thousand plants/hm^(2),the optimum planting density of Shaandan 650 was 75~90 thousand plants/hm^(2),Zhengdan 958 was 60~75 thousand plants/hm^(2),Shaandan 609 was 90 thousand plants/hm^(2),and Dongdan 60 was 60~75 thousand plants/hm^(2).

关 键 词：夏玉米 种植密度 植株性状 产量 

分 类 号：S513[农业科学—作物学]