黔西北山区小麦产量构成因素及高产育种途径研究

Study on Yield Components and Breeding Methods of High Yield of Wheat on the Mountainous Area in the Northwest of Guizhou

采用多元回归、多元相关分析法 ,分析了黔西北山区小麦产量构成因素 ,结果表明 ,在三要素中 ,决定产量的主导因子是穗数 ,其次是千粒重 ,最后是穗粒数 ,在此基础上提出了本区小麦高产育种应走大穗较多穗型求高产的育种途径 ,为本区小麦产量进一步提高提供了理论指导。

The Yield forming factors of wheat of the Mountain ous Area in the northwest of Guizhou were analyzed by multiple regression and multiple correlation. The results showed that the number of ears is main factor that decide yield, 1000grain weight is second , kernels per spike is third. For this reason, Advancing a new high yield breeding theory that was to have enough kernels per spike , 1000-kernels weight and to spike.