论文部分内容阅读
官渡区蚕豆田化学除草一直是采用以精稳杀得、盖草能、威霸等为主的茎叶处理除草剂，这些药剂虽对禾本科杂草有较好防效，但经过几年的应用后，造成豆田中阔叶类杂草上升为主要草种，发生日趋严重。针对这一现象，为探讨对豆田禾本科及阔叶类杂草的防除技术及有效药剂，我站选?
Guandu district broad bean field chemical weeding has been used to kill fine, cover grass can, Wei Pa and other stem and leaf-based herbicides, although these agents have a good control effect on grass weeds, but after several years After application, causing broad-leaved weeds in soybean fields to rise to the main grass species, the occurrence of increasingly serious. In response to this phenomenon, in order to explore the gramineous and broad-leaved weeds in soybean field control technology and effective agents, I stand?