山西省旱地小麦产量构成因素分析

采用多元相关、多元回归分析方法 ,分析了山西省旱地小麦产量构成因素。结果表明 ,山西省旱地小麦在不同的生态区域、不同的肥力条件下 ,决定产量的主导因子有所不同。南部中熟冬麦区 ,肥旱地和薄旱地决定产量的主导因子均为穗数 ;而中部晚熟冬麦区 ,肥旱地决定产量的主导因子是穗粒数 ,薄旱地决定产量的主导因子是穗数和穗粒数。同时对株高与产量的相关性也进行了分析 ,结果表明 ,在山西省旱地小麦上 ,株高与产量呈极显著正相关

Analysis of Yield Forming Factors of Wheat in Arid Land in Shanxi

Yield forming factors of wheat in arid land in Shanxi were analyzed by multiple correlation and multiple regression. The results showed that the main factors deciding yield varied with the difference of ecological zones and soil fertilities. For middle ripe winter wheat district in southern area, the number of ears was the key factor in arid land; for late ripe winter wheat district in central area, kernels per spike was the key factor in fertile arid land, and the number of ears and kernels per spike in poor arid land. Correlation analysis showed that there was a significant reciprocity between plant height and wheat yield in arid land in Shanxi