直播晚粳稻栽培高产途径探讨  

APPROACH TO THE WAYS FOR HIGH YIELD OF DIRECT-SEEDED LATE Japonica RICE

作　　者：程旺大[1] 汤美玲[1] 赵国平[2] 张国平[2] 

机构地区：[1]浙江省嘉兴市农科院,嘉兴314016 [2]浙江大学农学院农学系,杭州310029

出　　处：《上海农业学报》2001年第2期49-52,共4页Acta Agriculturae Shanghai

基　　金：浙江省科技厅资助项目!(编号 :9810 0 4)

摘　　要：根据浙北地区直播晚粳稻秀水 6 3计 6 6块田的调查数据 ,采用多元回归分析、通径分析和灰色关联分析 ,进行了多角度的计算机统计分析 ,探讨了直播晚粳稻栽培的高产途径。结果表明 ,直播晚粳稻产量性状对产量的效应大小依次为每穗总粒数 >有效穗数 >结实率 >粒重 ,其高产途径应是在确保高产所需的适宜穗数基础上 ,主攻大穗。Based on the survey data in 66 fields of direct seeded late Japonica rice variety Xiushui63 in North Zhejiang statistically analyzed by means of multivariate regression analysis, path coefficient analysis and grey relation grade analysis, the ways for high yield of direct seeded late Japonica rice were studied. It was showed that the descending order of effects of yield traits on yield was total grain number per panicle>effective panicle number per hm 2>fertility>1000 grain weight. For obtaining high yield of direct seeded late Japonica rice , it is necessary to develop the total grain number per panicle on the basis of obtaining a suitable effective panicle number which will insure high yield.

关 键 词：直播晚粳稻 高产途径 统计分析 栽培 

分 类 号：S511.22[农业科学—作物学] S511.048