中国稻米Issue(2)：20-23,4.
直播主要栽培因子对杂交晚粳甬优538农艺性状及产量的影响
Effect of Main Cultivation Factors in Direct Seeding on Agronomic Traits and Yield of Japonica Late Hybrid Rice Yongyou 538
摘要
Abstract
Using the optimum regression design, the effects of seeding date(X1), seeding rate(X2), urea rate(X3) and nitrogen proportion in various growing stages(X4) were studied on 8 agronomic traits of japonica late hybrid rice Yongyou 538 by direct seeding. The results showed that the order of the cultivation effects was X1>X2>X4>X3. There were various significant effects of seeding date to 6 agronomic traits(full heading date, seed setting rate, yield, etc), seeding rate to 7 traits(maximum seedlings, total grains per panicle, yield, etc), urea rate to 4 traits(tillerings, effective panicles, etc) and nitrogen proportion to 6 traits(plant height, 1000-grain weight, yield, etc), and had interactions among factors. The analysis by the full factorial simulation screen indicated that in order to obtain higher rice yield ≥ 750 kg/667 m2, the optimal cultivation requirements should be adopted as follows: seeding date June 2-5, seeding rate 1.25~1.41 kg/667 m2, amount of urea 36.3~40.0 kg/667 m2, and nitrogen proportion 28%~32% in seedling stage, 32%~28% in tillering stage, 18%~22% in booting stage, and 22%~18% in flowering stage.关键词
直播/杂交粳稻/甬优538/主栽因子/农艺性状/产量Key words
direct seeding/japonica hybrid rice/Yongyou 538/main cultivation factors/agronomic traits/yield分类
农业科技引用本文复制引用
姚坚,姚海根,张晓伟,孔燕,李瑾,边永高..直播主要栽培因子对杂交晚粳甬优538农艺性状及产量的影响[J].中国稻米,2015,(2):20-23,4.基金项目
国家水稻产业技术体系项目 （）
