麦草畏与草甘膦钾盐复配对一年生杂草的联合作用和非耕地除草效果研究

摘要

[Aims]The study aims to confirm the coeffect of dicamba with glyphosate potassium salt and the control effect of dicamba · glyphosate potassium salt 30％ AS against annual weeds in non-cultivated land.[Methods] The method of stem-leaves spraying was used to determine the coeffect of two herbicides indoor and Field trais were carried out on the best proportion selected.[Results] The results showed that the coeffect of dicamba and glyphosate potassium salt complex with 1: 9 was better, the recommended dosage for dicamba · glyphosate potassium salt 30％ AS was 1350～1800 g a.i./hm2, and the overall control effect on annual weeds non-cultivated land reaches 95.1％～97.6％ after 30 days.[Conclusions] The complex of dicamba ·glyphosate potassium salt was highly complementary and synergy was obvious to annual weeds.and dicamba · glyphosate potassium salt 30％ AS can control annual weeds in non-cultivated land effectively.%[目的]为明确麦草畏、草甘膦钾盐联合作用效果和30％麦草畏·草甘膦钾盐AS对非耕地一年生杂草的防除效果.[方法]采用茎叶喷雾法测定了2种除草剂室内联合作用试验, 并对筛选出的最佳配比加工成30％麦草畏·草甘膦钾盐AS进行了田间药效试验.[结果]麦草畏、草甘膦钾盐以1:9复配对非耕地一年生杂草的联合作用较好, 30％麦草畏·草甘膦钾盐AS的推荐使用剂量为1350～1800g a.i./hm2, 药后30 d对非耕地一年生杂草的总体防效可达到95.1％～97.6％.[结论]麦草畏、草甘膦钾盐复配互补性强, 对反枝苋、马齿苋、狗尾草、马唐等一年生杂草增效作用明显, 30％麦草畏·草甘膦钾盐AS能够有效防除非耕地一年生杂草.