密度对漯玉336产量及主要农艺性状的影响  

Influence of Planting Density on Yield and Main Agronomic Characteristics of Summer Maize Cultivar Luoyu 336

作　　者：闫海霞 吴伟华 朱二刚 付家锋 柳家友 

机构地区：[1]漯河市农业科学院,河南漯河462300 [2]漯河市郾城区建设局园林处,河南漯河462300

出　　处：《山东农业科学》2015年第5期43-45,共3页Shandong Agricultural Sciences

基　　金：国家玉米产业技术体系建设专项(nycytx-02);河南省农业科技成果转化项目(132201110010)

摘　　要：适宜的密度对实现玉米品种高产稳产至关重要。在密度为6.75万株/hm2时漯玉336产量最高。随着密度的增加,穗长逐渐变短,行粒数逐渐减少,百粒重逐渐下降,秃尖逐渐加长,穗粗和穗行数变化不大;抽雄、吐丝和成熟期逐渐推后,生育期延长;株高和穗位高增加,茎粗减小,抗倒伏能力下降。Suitable density is very important for maize varieties to achieve high and stable yield. At the density of 67 500 plants per hectare, Luoyu 336 had the highest yield. Along with the increase of density, the ear length became short, the grain number per row and 100 - grain weight decreased, but the bald tip length- ened gradually;the ear diameter and row number per ear had little change;the time tasseling, silking and ma- ture gradually postponed, and the growth period prolonged;the plant height and ear height increased, while the stem diameter decreased, and the lodging resistance ability decreased.

关 键 词：玉米 漯玉336 密度 产量 农艺性状 

分 类 号：S513.044[农业科学—作物学]