摘要
[目的]研究膜下滴灌水稻(Oryza sativa L.)各农艺性状间的关系,为水稻育种和栽培提供科学依据。[方法]对采用膜下滴灌技术种植的15个水稻品种(系)的主要农艺性状进行描述性统计,并进行相关分析和主成分分析。[结果]水稻单株有效穗、单穗实粒数与产量呈正相关。主成分分析结果表明,前3个主成分值累计贡献率达74.13%,且株高、实粒数、穗长的分量值较高。因此,产量的提高必须主要依靠提高单株有效穗数。[结论]在膜下滴灌水稻育种中,适当偏重选择单株有效穗多的材料就可增加选育出单株产量高水稻品种(系)的概率。
[Objective] The purpose was to study relationship among agronomic traits of rice with drip irrigation under mulch film,and provide a scientific basis for rice breeding and cultivation.[Method] The main agronomic traits of fifteen local rice varieties planted with drip irrigation under mulch film were studied by descriptive statistics,and then were investigated by using the methods of relativity and principal component analysis.[Result] The results showed that rice yield had a positive correlation with effective panicles per plant and spikelet per panicle.The results of principal component analysis showed that there were 74.13% contribution rates which consisted of plant height,spikelet per panicle,and panicle length.Thus,the improvement of yield had to rely on the increase of effective panicles per plant.[Conclusion] In the breeding process of rice with drip irrigation under mulch film,if the variety with high effective panicles per plant is selected,that will have more rates to get the variety which have high yield per plant.
出处
《安徽农业科学》
CAS
2012年第22期11202-11204,共3页
Journal of Anhui Agricultural Sciences
基金
国家"863"项目--主要粮食作物滴灌关键技术与装备(2011AA100508)
关键词
水稻
膜下滴灌
农艺性状
相关性分析
主成分分析
Rice
Drip irrigation under mulch film
Agronomic traits
Relativity analysis
Principal component analysis
