优质稻不同播种期对产量和主要性状的影响  

Influence of Different Seeding Date on Yield and Agronomic Traits of High Quality Rice

作　　者：刘时椿 

机构地区：[1]石阡县农业技术推广站,贵州石阡555100

出　　处：《耕作与栽培》2016年第3期48-49,51,共3页Tillage and Cultivation

摘　　要：为明确石阡县优质稻的适宜播期,以金优785为试验品种,设置4个不同播期处理。结果表明,播期对秧苗素质有一定影响,第4播期秧苗综合素质好;播期推迟水稻全生育期缩短但差异不大;播期对穗粒数、穗实粒数、结实率、有效穗的影响较大但穗长变化不明显。水稻在4月5日-4月20日期间播种的产量差异不显著,但在4月15日-4月20日播种的产量比4月5日-4月15日播种的增产,原因是4月15日-4月20日播种的结实率较高,有效穗较多,有增加产量的潜势。In order to clear out the suitable seeding date of high quality rice in Shiqian county, rice variety Jinyou 785 was chosen as test material and four treatments was designed. The results showed that seeding date had certain influence on seeding and the fourth seedlings comprehensive quality was better; sowing date delaying shortened but not much difference in the whole growth stage of rice; sowing date had greater influence on grains per panicle, setting grains per panicle and seed setting rate than panicle length. However, there was no significant of rice yield, but the yield of sowing in April 15th to 202 were greater than those sowing date during April 5th to 15th for the higher seeding rate and more panicles thus has potential of increase production.

关 键 词：优质稻 播种期 产量 农艺性状 

分 类 号：S511[农业科学—作物学]