北沙参田杂草化学防除技术研究

目的]探索适用于北沙参田阔叶杂草防除的除草剂品种及其使用。方法]采用小区试验研究精噁唑禾草灵、氯吡嘧磺隆、灭草松、异丙隆以及氟磺胺草醚与精喹禾灵混用对海滨滩涂北沙参田杂草的防除效果。结果]375 g a.i./hm~225%氟磺胺草醚EC与67.5 g a.i./hm~210%精喹禾灵EC混用药后45 d对田间杂草总体株防效约75%,鲜重防效约80%,且对北沙参生长未产生明显药害。结论]试验结果为有效解决北沙参田阔叶杂草危害问题提供了参考。

Weed Chemical Control in Radix Glehniae Fields

Objective] The aim was to explore the suitable herbicide on broadleaf weeds in Radix Glehniae fields and its using technology.Method] Weed control effect of fenoxaprop-P-ethyl,halosulfuron methyl,bentazone,isoproturon and a mixture of fomesafen with quizalofopP-ethyl in Radix Glehniae fields were studied through a plot experiment.Result] The preliminary results revealed weed control effect of fomesafen mixed with quizalofop-P-ethyl in Radix Glehniae fields.At 45 days after application of mixtures of 25％ fomesafen EC (375 g a.i./hm2)with 10％ quizalofop-P-ethyl EC (67.5 g a.i./hm2),the weed control effects for the overall weed stem control effect and fresh weight control were approximately 75％ and 80％,respectively,and the herbicide mixture was safe to Radix Glehniae.Conclusion] The mixture of fomesafen with quizalofop-P-ethyl could be application for weed control in Radix Glehniae field after future study in applied technology and provide a reference for effectively solving harm of broadleaf weeds in Radix Glehniae field.