17.5%精喹禾灵EC对大豆田一年生禾本科杂草防除效果研究

Study on Gramineae Weed Control Efficacy of Quizalofop-p-ethyl 17.5%EC in Soybean Fields

为明确17.5%精喹禾灵EC对大豆田禾本科杂草的防除效果及其使用的安全性,在田间设17.5%精喹禾灵EC每公顷26.25、39.375、52.5、78.75 g 4个处理,以5%精喹禾灵EC 45 g/hm^2为对照药剂,以人工锄草和清水喷雾为对照。结果表明,17.5%精喹禾灵EC对大豆田马唐、稗草具有很好的防效,可以在生产上推广使用。

To determine the control efficacy of quizalofop-p-ethyl17.5%EC against Digitaria sanguinalis(L.)Scop and Echinochloa crusgaiii(L.)Beauv as well as its safety in soybean fields,4treatments including26.25,39.375,52.5and78.75g/hm2of quizalofop-p-ethyl17.5%EC were established,with45g/ha of quizalofop-p-ethyl5%EC as herbicide control,the manual weeding and water as negative control.The results showed that quizalofop-p-ethyl17.5%EC preformed well in controlling the weeds of D.sanguinalis(h.)Scop and E.crusgalii(h.)Beauv,which could be used widely in soybean production.