晋中盆地麦田杂草种类分布及防除研究

VARIETIES, DISTRIBUTION AND CHEMICAL CONTROL OF WEEDS IN WHEAT FIELDS OF JINZHONG BASIN

小麦是晋中盆地种植的主要粮食作物之一,近年来受杂草为害较为严重.为化学防除提供理论依据,本文就晋中盆地麦田杂草种类,分布及演替等进行了调查分析.结果表明:晋中盆地麦田杂草共约有22种,大多为阔叶杂草,其中为害严重,分布较广的有8种,即:藜、刺儿茶、萹蓄、播娘蒿、麦瓶草、离子草、田施花、苦菜.并对各种杂草出现的频率,分布进行了分析比较,同时进行了化学防除比较试验.

Wheat is one of the most important crops in Shanxi. Recent years it has been seriously affected by the weeds. Inorder to control these weeds effectively with herbicides, the present paper has investigated the varieties, densities and distributions of the weeds in wheat fields of Jinzhong Basin. The results showed that there were 22 varieties of weeds in the wheat fields, 8 of which have caused serious damage to the crops. They were Chenopodium aibum L. ,Cephlanoplos segetum (Bge. )Kitam,polygonum avicu-lare L. , Descurainia sophhia (L. ) Schur, Silene conoidea L. , Chorispora tenella DC. , Convolvulus ar-vensis L. and Sonchus oleraceus L. . In addition, the field tests of control to the weeds with herbicides have also been conducted.