小麦生物产量影响因素初探  

Primary Study on Factors Influencing Wheat Biomass

作　　者：朱昭进[1] 赵莉[2] 何贤芳[2] 王青[1] 汪建来[2] 

机构地区：[1]安徽农业大学,安徽合肥230036 [2]安徽省农业科学院,安徽合肥230031

出　　处：《安徽农业科学》2011年第5期2601-2603,共3页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑计划项目(2009BADA6B00)

摘　　要：[目的]分析小麦的生物产量及其影响因素。[方法]以10个小麦品种（系）为试材,对小麦的生物产量与产量构成因素的差异显著性和相关性进行分析,并分别就小麦生物产量与产量和形态性状进行通径分析和相关分析。[结果]10个品种（系）间的生物产量和产量差异达显著水平,其变幅分别为16 400~19 900和8 124.0~9 463.5 kg/hm2,收获指数在0.448 2~0.508 5。小麦生物产量与产量和有效穗数呈极显著正相关,与高效叶面积指数呈显著正相关,但与收获指数呈极显著负相关,与穗粒数和千粒重以及上3叶面积、株高、穗长等形态性状的相关性不显著。小麦生物产量和经济系数对产量的直接通径系数分别为1.251和0.838。[结论]适当提高有效穗数和高效叶面积指数,改良株型,可提高小麦生物产量,进而获得高产。[Objective] The study aimed to analyze the wheat biomass and its affecting factors.[Method] With 10 wheat varieties（lines） as the tested materials,the difference significance and the correlation between the wheat biomass and its yield component were analyzed and the path analysis and correlation analysis between the wheat biomass and yield and between the wheat biomass and morphological characters were also conducted resp.[Result] The difference of the wheat biomass and the yield in 10 wheat varieties（lines） were all at the significant level,with the variation of 16 400-19 900 and 8 124.0-9 463.5 kg/hm2 resp.,and their harvest indexes were 0.448 2-0.508 5,the wheat biomass showed the extremely significantly positive correlation to the yield and the effective ears,the significantly positive correlation to the efficient leaf area index,but the extremely significantly negative correlation to the harvest index and had no significant correlation to the grains of ear and 1 000-grain weight and some morphological traits such as upper 3-leaf area,plant high and ear length.The direct path coefficients of wheat biomass and the economic coefficient on the yield were 1.251 and 0.838 resp.[Conclusion] Increasing suitably the effective ears and the efficient leaf area index and improving the plant type could increase the wheat biomass,thus getting the high yield.

关 键 词：小麦 产量 生物产量 有效穗 高效叶面积指数 

分 类 号：S512.1[农业科学—作物学]