不同药剂组合对马铃薯晚疫病防治效果及产量的影响

以马铃薯晚疫病感病品种费乌瑞它为试验对象，采用68％精甲霜锰锌可湿粉剂、70％安泰生丙森锌可湿粉剂和64％恶霜锰锌可湿粉剂3种药剂进行马铃薯晚疫病的防治试验，结果表明：交替使用其中2种或3种药剂防治马铃薯晚疫病的效果优于单一使用1种药剂；68％精甲霜锰锌可湿粉剂与70％安泰生丙森锌可湿粉剂、70％安泰生丙森锌可湿粉剂与64％恶霜锰锌可湿粉剂、68％精甲霜锰锌可湿粉剂与64％恶霜锰锌可湿粉剂3种组合交替施用共喷药4次，防效分别为65.96％、61.70％、60.34％，商品薯产量比对照分别增产为61.74％和60.07％和52.01％。生产上可选用药剂交替使用来防治马铃薯晚疫病。

Effects of Different Fungicide Combinations on the Control of Potato Late Blight and Yield of Potato

The effects of three fungicide combinations on the control of the susceptible potato cultivars / varieties Favorite were investigated , including Metalaxyl-Mmancozeb（68% WG ） , Antracol propineb （70% WP ） and Oxadixyl mancozeb （64% WP） .Our results showed that the controlling effect of the combination of two or three fungicides is better than a single one . After the alternative application of Metalaxyl-Mmancozeb（68% WG） and Antracol propineb （70% WP） ,Antracol propineb （70% WP） and Oxadixyl mancozeb （64% WP） ,Metalaxyl-Mmancozeb（68% WG） and Oxadixyl mancozeb （64% WP） for four times ,the control effects were reached 65.96% , 61.70% and 60.34% and the yields were increased by 61.74% ,60.07% and 52.01% respectively . Our results suggest that alternately application of fungicids will be benefit for the control of late blight .