不同除草剂对野燕麦和旱雀麦的防除效果

Different Herbicides Control with Avena fatua L and Bromus tectorum

[目的]筛选出对野燕麦和旱雀麦防除效果好的药剂。[方法]选择10种目前生产中常用的除草剂进行室内生测试验。[结果]土壤处理除草剂中81.5%乙草胺1600 m L/hm2和33.3%二甲戊灵5400 m L/hm^2防除野燕麦、旱雀麦效果达95%以上;茎叶处理除草剂中对野燕麦的防除效果:精唑禾草灵>炔草酸>唑啉草酯>烯草酮>氟唑磺隆>啶磺草胺;对旱雀麦的防除效果烯草酮>氟唑磺隆>啶磺草胺>精唑禾草灵>唑啉草酯>炔草酸。[结论]乙草胺、二甲戊灵、精唑禾草灵、炔草酸、唑啉草酯对野燕麦有良好的防除效果,烯草酮、氟唑磺隆对旱雀麦防除效果好。

[A ires] This study aims to screen out good herbicides against Avena fatua L and Bromus tectorum. [Methods] Ten kinds of commonly herbicides were selected to assess their herbicidal efficacy in greenhouse. [Results] Acetochlor 81.5% EC at 1600 mL/ha and pendimethalin 33.3% EC at 5400 mL/ha showed good control efficacy with over 95% against A. fatua L and Bromus tectorum. The order of herbicidal activity with stem and leaf treatment against A. fatua L were： fenoxaprop-p-ethyl 〉 clodinafop-propargyl 〉 pinoxaden 〉 clethodim 〉 flucarbazone-sodium 〉 pyroxsulam. The order of herbicidal activity withstem and leaf treatment against B. tectorum were： clethodim 〉 flucarbazone-sodium 〉 pyroxsulam 〉 fenoxaprop-p-ethyl 〉 pinoxaden 〉clodinafop-propargyl. [Conclusions] Acetochlor, pendimethalin, fenoxaprop-p-ethyl, clodinafop-propargyl, pinoxadent indicated good control efficacy against A. fatua L. Clethodim, fl had good control effect against B. tectorum.