小麦生物产量影响因素初探

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。

Primary Study on Factors Influencing Wheat Biomass

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...