小麦高产品种的主要性状比较与相关性分析

Comparison of main characters and correlation analysis between different high-yield wheat varieties

为了探讨小麦高产新品种的结构特征,为高产栽培及高产育种提供理论依据,试验选用7个高产小麦品种,研究不同品种的群体与个体的生长动态及产量性状.结果表明:不同品种的茎蘖动态、叶面积指数(LAI)动态、单株干物质积累动态及单株次生根生长动态均呈现一定的变化规律,返青前动态增长较为缓慢,返青后增长迅速.半冬性品种百农矮抗58成熟期群体达到了720.00万/hm2,但分蘖成穗率居中,而弱春性品种平安6号、豫麦18、郑麦9023的分蘖成穗率较高.经产量分析,不同品种之间达到了显著差异,且越冬期的群体和干物质积累量与拔节期的群体是影响产量的关键因素.因此,在小麦管理中应加强越冬前和返青后的管理,促使形成足够的群体和较大干物质积累量.

Studied the population and individual growth tendency and yield characteristics with different varieties.The results showed that the dynamic changes of population,LAI,the accumulative dynamic of individualplant dry matter and the growth dynamic of individualplant secondary roots which were different varieties presented basical change law,the dynamic growth was slower at over-revival stage than after revival stage.The population of Bainong AK58 reached 720.00×104/hm2 at maturity stage,but the rate of spikes was medium;but the higher＇s were Pingan 6,Yumai 18,Zhengmai 9023 which were weak-spring varieties.The yield achieved significant differences between different varieties through analysis of yield,and the groups in wintering period and jointing stage,the individualplant dry-matter quantity in wintering period were key factors to effect yield.The management should be strengthened at bofore over-wintering stage and after revival stage in order to promote enough groups and more dry-matter accumulation.