摘要
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。
The experiments on suifonylurea herbicides were conducted in wheat fields from 1993 to 1997. All herbicides studied could control the broad-leaved weed such as Descurainia sophia(L. ) Schur,Capsella bursa-p asterisk. )Medic and Erysimum cheiran-thoides L. and had more than 90 percent of controlling effect. The use of of suifony-lureas herbicides year by year caused the shift of the weed community. Once the dicotyledonous weeds, mainly Descurainia sophia (L. ) Schur had been prevalent in the field,gradually the community was changed into a mixture of the monocotyledonous and dicotyledonous weeds in which both Bromus japonicus Thunb and Descurainia sophia (L. ) Schur were dominant. The population of Bromus japonicus Thunb increased year after year and its density went up from 0. 1 - 0. 4 plants m-2 to 31. 5 - 78. 5 plants m-2 while Descurainia sophia (L. )Schur decreased from 78. 3~ 176. 4 plants m-2 to 33. 3 - 53. 2 plants m-2. This phenomenon gave a new subject for the future chemical control in wheat fields.
出处
《植物保护学报》
CAS
CSCD
北大核心
1999年第4期367-370,共4页
Journal of Plant Protection
基金
国家"九五"攻关杂草防除课题(96-005-01-05)
