摘要
1996～ 2 0 0 3年对河北省小麦 -夏玉米一年两熟种植制度下免耕玉米田杂草种类、发生规律及化学防除进行了研究 ,提出了将土壤处理除草剂与茎叶处理除草剂混用在免耕玉米田除草的措施。根据作物生长、杂草叶龄及环境条件 ,将土壤处理除草剂如乙阿合剂和灭生性茎叶处理除草剂克无踪或农达在玉米播种后出苗前桶混或分别施用 ,可以有效控制免耕玉米田杂草。施用 2 0 %克无踪水剂或 41 %农达水剂 2 2 5 0mL/hm2 混用 40 %乙阿合剂悬乳剂2 2 5 0mL/hm2 ,对免耕玉米田杂草鲜重防效在 95 %左右 ,比单用乙阿合剂 2 2 5 0mL/hm2 的防效提高 2 0多个百分点。
General information was provided in this paper on weed species, emergence time and dynamics in different types of zero-tillage corn based on weed survey and field experiments during 1996-2003. Weeds emerged in wheat field continued their growing and more competitive in zero-tillage corn.Postapplied herbicides, roundup and paraquat, tank mixed with preapplied herbicides, atrazine plus acetochlar, showed excellent weed control efficiency of 95% in weed biomass, comparing with 64.4% of atrazine plus acetochlar.
出处
《河北农业科学》
2004年第3期6-9,共4页
Journal of Hebei Agricultural Sciences
关键词
免耕玉米田杂草
种类
发生规律
除草剂
混用技术
Weeds
Post-emergence herbicies
Pre-emergence herbicides
Zero-tillage corn
