Effect of Chemical Regulation on Maize in Different Cultivation Densities  

不同栽培密度下玉米化学调控效果的研究(英文)

作　　者：陈志峰[1] 陈小文[1] 祁鑫[1] 刘向阳[2] 董学会[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193 [2]山东省鱼台县农业局,山东鱼台272300

出　　处：《Agricultural Science & Technology》2011年第5期691-694,717,共5页农业科学与技术（英文版）

摘　　要：[Objective] This study aimed at investigating the effect of chemical regulation on maize cultivated in different densities.[Method] By taking maize hybrids Xundan 20 and Zhongnongda 4 as materials,the effect of chemical regulation on the yield,yield component factors and plant morphology of the two hybrids planting in Northern and Northeastern China were studied,respectively.[Result] Chemical Yuhuangjin could control maize stalks,lower the plant height and the ear height,make internodes below the spike more coarse and enhance its lodging-resistance.In addition,chemical regulation could increase the optimum cultivation density by 7 500 plants/hm2 more than traditional cultivation.[Conclusion] This paper provided theoretical reference for cultivating high-yield maize.[目的]研究不同栽培密度下玉米化学调控的效果。[方法]以玉米杂交种浚单20和中农大4号为材料,分别研究了在华北、东北地区不同栽培密度下化学调控对玉米产量及产量构成因子和玉米株型的影响。[结果]"玉黄金"可调控玉米株型,使玉米个体的株高、穗位降低,使穗下部节间粗壮,使玉米的抗倒伏能力增强。化控处理辅助栽培可提高玉米的最适栽培密度,较传统栽培条件下提高了0.75万株/hm2左右。[结论]为玉米的高产栽培提供了理论依据。

关 键 词：DENSITY MAIZE Chemical regulation 

分 类 号：S513[农业科学—作物学]