摘要
在我国的东北春玉米区,长时间使用乙草胺和莠去津,导致部分地区防效下降。在吉林省农安县通过定点试验、大面积试验和大范围调查发现,乙莠合剂防效下降的主要原因是因为杂草群落结构的变化引起的,同时降水的减少和药剂使用方法不当也起了一定的作用,未发现产生明显抗性的迹象。在未来,乙莠合剂仍是该地区玉米地除草剂的主要药剂,对于杂草群落尚未发生变化的地块仍然有很好的防效,而在杂草群落发生变化的地区,应适当更换除草剂或适当增加轮作;针对当地特点,适当推迟乙莠合剂的喷施时间,采用机械喷雾、加大用水量等措施来提高乙莠合剂的防效。
It has reported that atrazine and acetoehlor had been used for a long time to control weed, and herbicide efficacy decreased in the northeast spring corn area. For making a clarification, the experiment and investigation were taken in NongAn county, Jilin province. We found the reason for the decreasing of herbicide efficacy was not the occurring of weeds resistance, but mainly because of the changing of weed community in some fields. The lessening of rain in the spring and the improper methods of medicament also decreased the herbicide effects. The resistant weed was not found. The atrazine and acetochlor still will be the main herbicides for a long time in the future. We should apply different herbicides or change the crops in the field where the weed community have been changed. And for increasing the controlling efficacy, we had better postpone time of spray herbicide, use machine, and increase the water using.
出处
《玉米科学》
CAS
CSCD
北大核心
2007年第1期135-138,共4页
Journal of Maize Sciences
基金
国家自然科学基金(30370940)
关键词
乙草胺
莠去津
抗性杂草
玉米
Atrazine
Acetochlor
Herbicide resistant weeds
Corn
作者简介
王仕稳（1978-），男，在读博士，主要研究杂草生态和杂草控制。E—mail：wshiw@sohu．com
通讯作者。Tel：010-62733427 E-mail：lizhaohu@cau．edu．cn
