几种除草剂对红芸豆(Phaseolus vulgaris Linn)的田间杂草防除效果及产量的影响

Effects of Different Herbicides on Weed Control and Yield of Red Kidney Bean

[目的]筛选大田种植红芸豆使用除草剂的类型及剂量。[方法]采用田间试验的方法,研究不同时期,不同比例单一或混合喷除草剂对红芸豆的安全性、产量及田杂草的除草效果的影响。[结果]在9种不同除草剂组合中,除处理1(40%氧氟乙草胺EC播后苗前喷雾)和处理4(40%氧氟乙草胺EC播后苗前喷雾、然后用12.5%拿捕净EC苗后喷雾组合)有药害外,其他组合无明显药害损伤,对红芸豆田间施用是安全的,对产量影响不显著。除草剂组合处理6(33%二甲戊灵EC播后苗前喷雾,然后用25%氟磺胺草醚AS+10%精喹禾灵EC苗后喷雾)对红芸豆田杂草的防治效果较好,防效达75.1%;产量达到2140.52 kg/hm^2,比对照增产53.7%。[结论]红芸豆田间播后苗前用33%二甲戊灵EC喷雾,出苗后用25%氟磺胺草醚AS+10%精喹禾灵EC喷雾对杂草防治效果显著。

[Aims]This study aims to screen out the type and dose of herbicide used in field of red kidney bean.[Methods]Field trials were carried out to study the effects of herbicides on the safety and weed control and yield of red kidney bean in different periods and at different proportion of single and combinations.[Results]The results showed that in the nine kinds of different herbicide combinations,except the treatment 1(oxafluoroethachlor 40%EC between period of after planting and before emergence)and treatment 4(oxafluoroethachlor 40%EC between period of after planting and before emergence and sethoxydim 12.5%EC after emergence)showing drug damage,other combinations were safety and had little effect on yield of red kidney bean in field application.Through comprehensive analysis of the effects of herbicide combinations on the overall control effect and plant height and pesticide damage and yield of red kidney bean in the field,it suggested that the treatment 6(pendimethalin 33%EC between period of after planting and before emergence and fomesafen 25%AS and quizalofop-p-ethyl 10%EC after emergence)had better weed control effect than other combinations,the control effect could reach 75.1%;and the yield could reach 2140.52 kg/ha which has significantly effect on yield increasing.[Conclusions]So,the treatment 6 was the ideal pesticide combination for red kidney bean in field.