不同栽培密度对水稻“吉农大7号”生育及产量的影响  

Effects of Plant Density on Growth and Yield of Rice “Jinongda 7

作　　者：杨福[1] 胡长城 王晓丽[1] 邵喜文[1] 耿晓君 

机构地区：[1]吉林农业大学农学院,长春130118 [2]公主岭市水稻研究所,公主岭136102

出　　处：《吉林农业大学学报》2000年第4期18-22,共5页Journal of Jilin Agricultural University

基　　金：吉林省农业厅资助项目 !(96 0 10 7-1)

摘　　要：在不同栽培密度条件下 ,对水稻新品种“吉农大 7号”生育指标及产量构成性状因子进行研究分析表明 :随着栽培密度的降低 ,“吉农大 7号”的分蘖力提高 ,叶片数增加 ,生育期延长。不同栽培密度条件下“吉农大 7号”的穗数、粒数、叶面积指数差异明显 ,而株高只有在 30cm× 13 2cm密度下较其他密度明显变矮 ,千粒重基本趋于稳定。“吉农大 7号”的最适栽培密度为 30cm× 19 8cm即 (17穴 /m2 ) ,产量可达 95 0 0kg/hm2以上。Growth, development and yield determing components of rice, cv. “Jinongda 7' under different plant densities were studied. With the decrease of plant density, the number of tillers and leaves increased and growth period extended Significant differences were found in the number of panicles and grains and leaf area index (LAI) under different plant density. However, plant height significantly decreased only at 30?cm×13.2?cm plant density compared with that at other plant densities. Plant density had no effect on grain weight The highest yield, 9?500?kg/hm 2 , was obtained at plant density 30?cm×19.8?cm.

关 键 词：栽培密度 水稻 生育性状 产量 吉农大7号 

分 类 号：S511.04[农业科学—作物学]