不同密度对江优919生长及产量的影响  

Effects of Different Planting Density on Growth and Yield of Jiangyou 919

作　　者：罗国衡 曾涛 王弟海 吴玉秀 

机构地区：[1]天柱县农业技术推广站,贵州天柱556699 [2]贵州省农作物技术推广总站,贵州贵阳550001

出　　处：《耕作与栽培》2015年第3期45-46,52,共3页Tillage and Cultivation

基　　金：江优919与江两优3号高产栽培技术推广;黔科合成字[2013]5068

摘　　要：为探讨江优919的适宜栽培密度,开展了不同宽窄行的密度试验.结果表明：江优919栽培密度为12688穴/667m2[（36.6cm＋ 16.5cm＊ 19.8cm）]单产最高,达610.21kg/667m2,此密度植株茎蘖数较多,成穗率和结实率高.拟合产量与密度抛物线y=0.000003x2＋0.0721x＋13692,栽插密度为12017穴/667m2时单产最高.在生产上建议江优919的栽培密度为12000～13000/667m2.To explore the appropriate planting density of Jiangyou 919, different narrow--row spacing were applied intest. The results showed that the planting density was 12688 hills/667m2 [-（36.6cm＋ 16.5cm ＊ 19.8cm）], the yield was the greatest, yielded 610.21 kg/667m2 ,the tellers of which was more than others, effective spike rate and setting percentage were higher. The curve of yield and planting density was y= 0. 000003x2 ＋0. 0721x-b 13692, the planting density is 12017 hills/667m2 , yield is highest. So 12000-13000 hills/667m2 was suggested in the production of Jiangyou 919.

关 键 词：密度 江优919 产量 

分 类 号：S513[农业科学—作物学]