【摘要】 河北省麦田有越年生杂草 2 0种 ,其中荠菜和播娘蒿为优势种。麦田越年生杂草绝大部分在秋季出苗 ,秋季出苗杂草是防除的重点。在以越年生杂草为主的麦田 ,改春施 2 ,4—滴丁酯为秋施 ,可省药 3/ 4左右 ,并可显著提高除草效果。对绿黄隆、甲黄隆和苯黄隆等进行了研究 ,明确了各自的杀草谱、杀草活性、对小麦和后茬作物的安全性以及施药适期、最佳用药量等应用技术 ,提出了各药剂的适用范围更多还原

【Abstract】 The studies on winter weeds in wheat fields were conducted during 1992—2000 The results showed that there were 20 species of winter weeds in wheat fields in Hebei province, and among them Capsella bursa-pastoris and Descurainia sophia were dominant weed species 80 to 90 percent of winter weeds emerged in fall, which were focal control target To control winter weeds in wheat fields, applying 2,4-D butylate in fall could obtain a higher effect and save 3/4 amount of herbicide than applying in spring Chlorsulfuron, methsulfuron-methyl and tribenuron-methyl were made clear on their weed control spectrum and activity, degree of safety to wheat and its succeeding crops, appropriate time and dosage to apply and zones or fields for applying safely更多还原