两系杂交稻新组合深两优1813的高产栽培技术及其产量结构相关性分析  

High-Yielding Culture of New Two-Line Hybrid Rice Combination Shenliangyou 1813 and Correlation Analysis of Yield Components

作　　者：李建武[1,2] 宋春芳[2] 李楚甲 宋顺和 姜稳亮 邓启云[1,2] 

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]国家杂交水稻工程技术研究中心/杂交水稻国家重点实验室,湖南长沙410125 [3]溆浦县农村工作办公室,湖南怀化419300 [4]溆浦县水东镇农技站,湖南怀化419311

出　　处：《湖南农业科学（下半月）》2014年第6期15-17,共3页

基　　金：国家"863"计划课题--超高产水稻分子育种与品种创制(2012AA101103)

摘　　要：总结了两系杂交稻新组合深两优1813的高产栽培技术,并通过对百亩片的调查取样,进行了深两优1813产量结构的相关性分析。结果表明:在有效穗、每穗实粒数和千粒重三个产量构成因素中,有效穗与产量呈显著正相关,其次每穗实粒数对产量的贡献也较大;有效穗数和每穗实粒数呈显著负相关,表明穗数与实粒数之间矛盾较为尖锐,千粒重和有效穗、每穗实粒数呈微弱正相关。最后提出了深两优1813在超高产栽培下使单产达15 t/hm2的目标产量,产量结构应达到以下标准:有效穗290万穗/hm2左右,每穗实粒数220粒左右,结实率90%以上,千粒重27.5 g。Shen liangyou 1813 is a new two line hybrid rice combination bred by China National Hybrid Rice RD Center and Longping High-Tech and in 2013 it yielded,at 13.63 t/hm2 in Xupu County,Hunan Province.In this study,its high-yielding cultural techniques are introduced and the relationship between the yield and its components is analyzed by correlation analysis.The results show that ①among three factors of the yield,the number of effective panicles is positively correlated with the yield（r=0.561＊）,so are the number of filled grains per panicle（r=0.406）and the 1000-grain weight（r=0.037）,the number of effective nanicles and the number of filled grains per panicle are the basic guarantee for high and stable yield,so increasing the effective panicles and filled grains per panicle is the key to obtain high yield;②the number of effective panicles is negatively correlated with the number of filled grains（r=-0.525＊）,there is the sharp contradiction between them,and the relationship between them should be balanced when this variety;and ③ the 1000-grain weight is weakly positively correlated with the number of effective panicles and the number of filled grains per panicle,it also has little effect on the yield（r=0.037）,and the 1000-grain weight is the inherent characteristic.

关 键 词：两系杂交稻 深两优1813 高产栽培技术 产量结构 

分 类 号：S511[农业科学—作物学]