双晚粳杂当优9号的高产结构及增产措施  

HIGH YIELDING STRUCTURE AND INCREASING YIELD MEASURES OF DOUBLE LATE HYBRID JAPONICA RICE—DANGYOU No.9

作　　者：王德正 金烽 夏维陆 

机构地区：[1]庐江县种子公司

出　　处：《安徽农业科学》1989年第3期11-15,共5页Journal of Anhui Agricultural Sciences

摘　　要：<正> 粳型杂交水稻的优势是显然存在的。但在粳杂强优组合及其栽培技术研究方面,尚缺乏理论指导,粳杂优势利用进展缓慢。为此,1987年以来,我们在筛选适宜庐江县生态条件下栽培的强优组合的同时,对当优9号的肥料运筹方式、栽插密度等方面做了一些试验,现将结果总结如下。一、试验经过和方法 1987年从安徽省农科院水稻研究所引进4个粳杂组合进行比较试验,筛选出产量高、抗性强的组合当优9号。1988年针对它的特征特性,分别进行了生产试验、肥料试验和密度试验。 1.对比试验。供试材料有当优C堡、六优C堡、当优9号、当优15和鄂宜105。采用对比法排列,鄂宜105为对照,每隔两个供试组合设一对照区,重复两次。小区而积50.0米~2,株行距10×16.7厘米。6月17日播种,7月22日移栽。The study shows that the heterosis of hybrid japonica rice is distinguished. The average yield is about 400kg/mu. The contributions of yield components to yield number effective panicles per mu, number of spik elets per panicles, percentage of filled spikelets, weight of 1000 grains, plant height are diverse, that of number of effective panicles is the greatest that of number of spikelets per panicle, and percentage of filled spikelets take the second, that weight of 1000 grains and plant height are smaller. Cultivating strong seedlings, early sowing and transplanting timely, strong seedlings transplanted sparsely, base manure and top application used properly are the keys to get high yield.

关 键 词：晚粳 杂交 水稻 栽培 

分 类 号：S511.22[农业科学—作物学]