种植密度对不同玉米品种产量及籽粒灌浆的影响  

Effects of Plant Density on Yield and Kernel Filling of Different Maize Varieties

作　　者：王晓燕[1] 张洪生[1] 盖伟玲[1] 段梅堂 姜雯[1] 

机构地区：[1]青岛农业大学农学与植物保护学院,山东青岛266109 [2]乐陵市农业局,山东乐陵253600

出　　处：《山东农业科学》2011年第4期36-38,共3页Shandong Agricultural Sciences

基　　金：公益性行业(农业)科研专项(200903007);山东省优秀中青年科学家科研奖励基金项目(2006BSB01452)

摘　　要：为了探明种植密度对玉米产量及其构成的影响,在大田条件下,以高产玉米品种郑单958、登海3719、金海5号为试验材料,研究了低密度(52 500株/hm2)、中密度(75 000株/hm2)和高密度(97 500株/hm2)对玉米籽粒灌浆和产量的影响以及品种间的差异。结果表明:种植密度对各粒位籽粒灌浆影响显著,各品种受密度影响趋势一致,以穗上位籽粒受密度影响最大,而金海5号各部位籽粒灌浆均受密度影响较小。各品种产量受种植密度影响显著,金海5号产量随密度增加而提高,而登海3719和郑单958产量均在中密度下达到最高,高密度下显著下降。金海5号产量在各密度下均高于其它两品种。In order to explore the effects of plant density on the yield and yield components of maize,three high-yielding maize cultivars Zhengdan 958,Denghai 3719 and Jinhai 5 were used for this study in field with three plant density treatments,low density（52 500 plants per hectare）,medium density（97 500 plants per hectare） and high density（97 500 plants per hectare）.The results showed that plant density obviously affected the filling of kernels at different ear positions for all tested cultivars,and the kernels at top ear position were affected the greatest.However,the kernel filling of Jinhai 5 was affected the least by plant density.The yield was affected significantly by the plant density for all tested cultivars.For Jinhai 5,the yield increased with the increase of density,but the other two cultivars Zhengdan 958 and Denghai 3719 reached the highest yield at the medial plant density.The yield of Jinhai 5 was the highest under all plant density conditions compared to the other two cultivars.

关 键 词：玉米 种植密度 粒位 产量 

分 类 号：S436.421.19[农业科学—农业昆虫与害虫防治]