不同播期对再生稻信粳18产量及产量性状的影响  

Effect of Different Sowing Dates on Yield and ItsCharacter of Ratoon Rice of Xinjing 18

作　　者：石守设 朱保磊 张顺 金开美 黄涛 李刚 师令智 SHI Shoushe;ZHU Baolei;ZHANG Shun;JIN Kaimei;HUANG Tao;LI Gang;SHI Lingzhi(Xinyang Academy of Agricultural Sciences,Xinyang He’nan 464000,China)

机构地区：[1]信阳市农业科学院,河南信阳464000

出　　处：《耕作与栽培》2021年第3期34-37,共4页Tillage and Cultivation

基　　金：河南省重大科技专项(151100111200-2-1);河南省现代农业产业技术体系项目(S 2018-04-04)。

摘　　要：为探究信粳18在豫南再生稻高产高效的最佳播期,研究5个播期处理对信粳18生育期、产量及产量性状的影响。结果表明,信粳18在豫南再生稻种植的适宜播期为3月9日—3月25日,最佳播期为3月17日,且在最佳播种期下,头季稻加再生稻稻谷产量可达827.0 kg·hm^(-2)。说明最佳播种期能够有效促进信粳18再生稻产量三要素(有效穗数、穗实粒数、千粒重)的协调发展,进而提升头季产量和再生稻总产量。To investigate the best sowing date to achieve high yield and high effciency of Xinjing 18 in ratoon rice of southern Henan,in this study,five sowing date treatments were designed to analyse there effects on growth period,yield and yield traits.The results showed that,the suitable sowing date of Xinjing 18 was from March 9 to March 25,but the best sowing date was March 17,the grain yield of first season rice plus ratooning rice could reach 827.0 kg·hm^(-2) at the best sowing time.The results indicated that the optimal date could effectively promote the coordinated development of the three yield factors(effective panicles,grains per panicle and 1000 grain weight)of Xinjing 18 ratooning rice,and then the first season yield and the total yield of ratooning rice were increased.

关 键 词：播期 信粳18 再生稻 性状 产量 

分 类 号：S511[农业科学—作物学]