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1993～1997使用磺酰脲类除草剂进行麦田化学除草试验。结果表明,所使用的除草剂均能有效地防治阔叶杂草,如播娘篙、荠菜、糖芥等,除草效果大于90％。随着磺酰脲类除草剂的连年使用,引起麦田杂草群落结构的变化,原以播娘篙为主要种类的双子叶杂草群落,演变成以雀麦、播娘蒿为主的单、双子叶混生杂草群落,并且雀麦的数量逐年增加,其生长密度由试验前的0.1～0.4株/m~2上升为31.5～78.5株/m~2,而播娘篙则由78.3～176.4株/m~2下降为34.3～53.2株/m~2。麦田杂草种类的演变为今后进行麦田化学除草提出新的课题。
1993 ~ 1997 Sulfonylurea herbicide for wheat field chemical weed control. The results showed that all the herbicides used could effectively control broadleaf weeds, such as sow’s motherwort, shepherd’s purse, sugar mustard and the like, and the weeding effect was over 90%. With the continuous use of sulfonylurea herbicides, the change of weed community structure in wheat fields was caused. The dicotyledonous weed community, which was originally dominated by Castanopsis fargesii, evolved into a mono-, Dicotyledon mixed weed communities, and the number of the broccoli increased year by year, the growth density increased from 0.1 ~ 0.4 plants / m ~ 2 before the experiment to 31.5 ~ 78.5 plants / m ~ 2, while the sowing rate increased from 78.3 ~ 176.4 Strain / m ~ 2 decreased to 34.3 ~ 53.2 strains / m ~ 2. The evolution of the weed species in the wheat fields raises new topics for the chemical weed control in wheat fields in the future.