不同栽插密度对南粳9108群体性状及产量的影响  

Effects of Different Planting Densities on Population Characteristics and Yield of Nanjing 9108

作　　者：吕宏飞[1] 张安存[1] 韩正光[1] 乔红梅[1] 周青[2] 陈英[1] 陈新红[2] 

机构地区：[1]江苏省白马湖农场,江苏淮安223216 [2]淮阴工学院,江苏淮安223003

出　　处：《中国稻米》2015年第1期78-80,共3页China Rice

基　　金：江苏省农业支撑项目(BE2012445);国家星火计划项目(2013GA690395)

摘　　要：以优质食味水稻品种南粳9108为材料,进行了3种不同行距模拟机插试验。试验结果表明,行距20cm、25 cm机插水稻的栽插质量高于行距30 cm的栽插质量,其有效穗数显著高于行距30 cm机插水稻,但采用行距30 cm的插秧机更能改善水稻群体光能利用条件,实现壮秆大穗,提高总颖花量和粒重,增强抗病性,最终产量反而较采用行距20 cm、25 cm的处理高。Effects of different machine inserted row spacing（20 cm, 25 cm and 30 cm） on population characteristics and yield of late maturity japonica rice Nanjing 9108 were investigated. The results show that tiller number, leaf area index and dry weight of rice with machine inserted row spacing of 20 cm and 25 cm were higher than the row spacing of 30 cm rice before heading, and effective pani-cles per unit area was significantly higher than that of row spacing of 30 cm, but the grain number per spike, seed setting rate, grain weight were decreased than that of row spacing of 30 cm, the yield of row spacing of 30 cm rice was highest. The comprehensive index with row spacing of 30 cm were better than that of row spacing of 20 cm and 25 cm in Nanjing 9108.

关 键 词：水稻 栽插密度 行距 机插 产量 南粳9108 

分 类 号：S511.044[农业科学—作物学]