种植密度对小麦晋麦84产量及单株农艺性状的影响  

Effects of Planting Density on Yield and Per Plant Agronomic Traits of Winter Cultivar Jinmai 84

作　　者：任文斌[1] 谢三刚[1] 王倩[1] 邱玉亮 姚景珍[1] 吴翠翠[1] 柴永峰[1] 李秀绒[1] 

机构地区：[1]山西省农业科学院棉花研究所,山西运城044000

出　　处：《湖北农业科学》2017年第2期218-221,共4页Hubei Agricultural Sciences

基　　金：国家科技支撑计划项目(2013BAD04V03);山西省科技攻关项目(20140311001-4;20140311001-2);山西省农业科学院攻关项目(YGG1506)

摘　　要：为了研究不同种植密度对小麦(Triticum aestivum L.)产量和单株农艺性状的影响,以冬小麦品种晋麦84为试验材料,采用随机区组试验设计,进行等距离4、5、6、7、8、10 cm单子粒点播、条播、宽幅播种密度试验。结果表明,产量随密度增加先升后降,有效穗数随密度增大而增加,穗粒数随密度增大而减少,4和10 cm处理差异达显著水平。小麦苗期单株干物质积累量、分蘖数、次生根数和小麦成熟期单株穗数、主穗小穗数、主穗粒数、主穗粒重、单株生物学产量随密度增加有下降趋势。在适宜播期内晋麦84的合理基本苗密度为230万~340万/hm^2,在此范围内各处理间产量差异不显著,基本苗密度为270万/hm^2的宽幅播种处理产量最高。In order to study the effects of planting density on grain yield and per plant agronomic traits,an experiment by randomized block design was hold with a winter wheat cultivar Jinmai 84.The experiment included drilling,wide planting and equidistance 4 cm,5 cm,6 cm,7 cm,8 cm,10 cm of Sing-seed punch planting.The results showed that yield increased first and then decreased with increasing density,The effective spikes increased with the increase of the density,Grains per spike decreased with the increase of the density.Multiple comparative analysis showed that there were significant differences between 4 cm and 10 cm treatment.Dry matter accumulation,tiller and secondary root of per plant in Wheat Seedlings decreased with the increase of the density,and there are similar trend among spike per plant,main spike spikelet,kernel number per main spike,kernel weight per main spike.The corresponding density were 230 ×10^4-340×10^4 basic seedlings per hectare of Jinmai 84 in the suitable sowing period,there were not significant differences among different treatment in the range,and planting density 270×10-4 basic seedlings per hectare obtained high yields by wide planting.

关 键 词：小麦(Triticum AESTIVUM L.) 晋麦84 种植密度 等距离 单粒点播 农艺性状 

分 类 号：S512.1[农业科学—作物学] S318