糯稻新品种盐糯17不同栽插密度比较试验  

Effects of Different Planting Densities on the Agronomic Traits of the New Glutinous Rice Variety Yannuo 17

作　　者：马骏[1] 远晓 徐海港[1] 费新茹 陈元洲[1] 郭红[1] 张亚[1] MA Jun;YUAN Xiao;XU Hai-gang;FEI Xin-ru;CHEN Yuan-zhou;GUO Hong;ZHANG Ya(Yandu Institute of Agricultural Sciences in Yancheng City,Yancheng 224000,China)

机构地区：[1]盐城市盐都区农业科学研究所,江苏盐城224000

出　　处：《大麦与谷类科学》2021年第5期37-40,共4页Barley and Cereal Sciences

基　　金：江苏省现代农业(稻麦)科技综合示范基地[JATS(2020)208]。

摘　　要：为探究水稻新品种盐糯17机械化栽插的最适密度,设置5个不同的栽插密度(2.22万、1.85万、1.59万、1.39万、1.24万穴/667 m^(2)),比较这5个栽插密度下盐糯17的叶龄进程、茎蘖动态和主要农艺性状。结果表明:盐糯17的叶龄进程随着栽插密度的提升而加快;单穴茎蘖数随着栽插密度的降低先增加,当栽插密度降低到1.59万穴/667 m^(2)时,不再随着栽插密度的降低而增加;茎蘖总数随着栽插密度的降低而降低。盐糯17的主要农艺性状中,株高随着栽插密度的降低先增加,当栽插密度降低到1.59万穴/667 m^(2)时趋于稳定;全生育期随着栽插密度的降低加长;有效穗数随着栽插密度的降低显著减少;不同栽插密度下穗粒数差异没有统计学意义,但低密度处理下大小穗差异情况较多。盐糯17在栽插密度为1.59万穴/667 m^(2)时,千粒质量最高;在栽插密度为1.59万~1.85万穴/667 m^(2)时,产量较高。In order to determine the optimal planting density of Yannuo17,a new rice variety,five different planting densities(22200,18500,15900,13900,12400 hills/667 m^(2))were set to compare their effects on leaf age process,tiller dynamics,and main agronomic traits of Yannuo17.The results showed that the leaf age process of Yannuo 17 was accelerated with the increase of planting density,and tiller number per hill increased first with the decrease of planting density;however,when the density decreased to 15900 hills/667 m^(2),tiller number per hill no longer increased with the decrease of planting density,but the total tiller number per 667 m^(2)decreased with the decrease of planting density.Among the main agronomic traits of Yannuo 17,plant height increased first with the decrease of planting density,but when the density dropped to 15900 hills/667 m^(2),plant height tended to be stable.Moreover,the whole growth period lengthened with the decrease of planting density,and the number of effective panicles decreased significantly with the decrease of planting density.There was no significant difference in grain number per panicle under different planting densities,but there were noticeable differences in this trait between large and small panicles under lower density treatments.The 1000-grain weight was the highest at the planting density of 15900 hills/667 m^(2),and the yield of Yannuo 17 was higher at the planting density of 18500 hills/667 m^(2).

关 键 词：盐糯17 栽插密度 叶龄 茎蘖动态 农艺性状 

分 类 号：S511.2.2[农业科学—作物学]