【摘 要】
：
为探究42％烟嘧·莠·异丙可分散油悬浮剂对黄淮海地区夏玉米田一年生杂草的防效及对玉米的安全性.采用茎叶喷雾施药,定期调查的方法进行田间药效试验.结果 表明,42％烟嘧·莠·
【机 构】
：
商丘职业技术学院 河南商丘476100
论文部分内容阅读
为探究42％烟嘧·莠·异丙可分散油悬浮剂对黄淮海地区夏玉米田一年生杂草的防效及对玉米的安全性.采用茎叶喷雾施药,定期调查的方法进行田间药效试验.结果 表明,42％烟嘧·莠·异丙可分散油悬浮剂用量分别为945 g/hm2、1 102.5 g/hm2、1 260 g/hm2、2 205 g/hm2的条件下,施药30 d对玉米田杂草的鲜重防效分别为91.15％、92.76％、93.88％、95.11％,防效较好,玉米的增产率分别为3.65％、7.34％、10.36％、10.72％.本着经济、高效和环保的原则,推荐用量945～1 260 g/hm2为最佳使用剂量.42％烟嘧·莠·异丙可分散油悬浮剂在试验剂量下,于玉米田苗后、杂草3～5叶期进行茎叶喷雾处理,对玉米安全,无药害发生,除草效果良好,并具有一定的增产作用,可以作为黄淮海地区夏玉米田的主要除草剂使用.
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