作　　者： ; ; ; ; (王建漳）; (郑传举）;

机构地区： 华中农业大学植物科学技术学院作物生理与栽培研究中心

出　　处： 《灌溉排水学报》 2008年第1期96-99,共4页

摘　　要： 以杂交水稻二优培九为试验材料,利用测坑栽培,比较了4种灌溉方式下的水稻产量性状,并对其进行了相关性及通径分析,结果表明,与淹水灌溉相比,间歇灌溉、半干旱栽培和干旱栽培比淹水灌溉下水稻产量分别增产16.20%、减产12.90%和减产37.87%;单株有效穗数、每穗实粒数、结实率和千粒重与单株理论产量之间呈极显著正相关,相关系数分别为0.73892、0.57864、0.58591和0.62008,而单株有效穗数与每穗颖花数、每穗实粒数和一次枝梗数呈较弱的负相关。试验结果表明,间歇灌溉为南方稻区较适宜的灌溉方式。在制定水稻高产栽培措施时,应加强稻田水分管理,在提高千粒重的同时,主攻并协调好单株有效穗数和每穗实粒数。 Correlation and path analysis on the yield characters of a hybrid rice cultivar Liangyou peijiu grown in non-weighting lysimeters were determined under four different irrigation methods respectively. Compared with continuous flooding irrigation, the grain yield was 16.20% higher under intermittent irrigation but 12.90% and 37.87% lower under semi-dry cultivation and dry cultivation respectively. No. of panicles per plant, No. of filled grain per panicle, seed setting rate, 1000-grain weight and theoretical grain yield per plant have obvious positive correlation, and the coefficient is respectively 0. 73892, 0. 57864. 0. 58591 and 0. 62008; on the contrary, No. of panicles per plant and No. of primary branch, No. of spikelet per panicle, No. of filled grain per panicle have weak negative correlation. The results indicate that intermittent irrigation was a favorable method for paddy rice. When drafting the measure of high-yield cultivation, we should enhance the moisture management of paddy, not only increase the 1000-grain weight, but also main attack and mix up No. of panicles per plant and No. of filled grain per panicle.

关 键 词： 灌溉方式 水稻 产量性状 相关性 通径分析

领　　域： [农业科学] [农业科学] [农业科学]