不同栽培方式对粳型巨胚稻产量性状相关性及通径分析  

Correlation and Path Analysis on the Yield Characters of Japonica Giant Embryo Rice under Different Cultivation Regimes

作　　者：张荣萍[1,2] 戴红燕[1] 蔡光泽[1] 朱晓娟[1] 胡志琴[1] 

机构地区：[1]西昌学院,四川西昌615013 [2]四川农业大学水稻研究所,四川温江611130

出　　处：《西昌学院学报（自然科学版）》2009年第4期16-18,共3页Journal of Xichang University(Natural Science Edition)

基　　金：西昌学院课题"几种特种稻生理特性研究"(项目编号:YJSA0601);四川省教育厅青年基金项目粳型巨胚稻发芽机理及其栽培技术研究(项目编号:2006C003)

摘　　要：以西巨胚1号为试验材料,比较了淹水、旱种、垄畦3种不同栽培方式下的水稻产量性状,并对其进行了相关及通径分析。结果表明,垄畦栽培方式下,西巨胚1号产量比淹水栽培下增产24.33%,产量构成较合理,有效穗、穗粒数、结实率和千粒重都显著提高;旱种下产量各构成因素均有较大幅度下降,导致减产显著。有效穗、每穗粒数和结实率与产量均呈极显著正相关,千粒重和产量呈显著正相关,而有效穗数与每穗粒数、有效穗数与千粒重、每穗粒数与千粒重呈较弱的负相关,因此,生产上巨胚稻栽培建议采用垄畦栽培方式更有利于其产量形成,在制定巨胚稻高产栽培措施时,应加强稻田水分管理,在提高千粒重的同时,主攻并协调好有效穗数和每穗粒数。Correlation and path analysis on the yield characters of a Japonica Xi- giant embryo -1 was studied under three different cultivation regimes of submerged irrigation, dry. cultivation and ridge cultivation. The results indicated that grain yield of the ridge cultivation was 24.33% higher than that of the submerged irrigation. The ridge cultivation was favorable to make an ideal grain yield components, and significantly promoted effective panicles, spikelets per panicle, seed setting rate and 1000-grain weight. Dry cultivation significantly decreased grain yield and its components. Effective panicles, spikelets per panicle, seed setting rate and yield have significantly （0.01） obvious positive correlation, 1000-grain weight and yield has significantly （0.05）obvious positive correlation; on the contrary, effective panicles and spikelets per panicle, effective panicles and 1000-grain weight, spikelets per panicle and 1000-grain weight have weak negative correlation. Therefore, ridge cultivation were beneficial to increase the grain yield and its components, when drafting the measure of high-yield cultivation for the Japonica Xi-giant embryo-1 in Production, and we should enhance the moisture management of paddy, not only increase the 1000-grain weight, but also main attack and mix up effective panicles and spikelets per panicle.

关 键 词：粳型巨胚稻 栽培方式 产量 相关性 通径分析 

分 类 号：S511.22[农业科学—作物学]