五种高效药剂对马铃薯晚疫病防治效果的研究

Comparative Experimental Study of Five Fungicides to Potato Late Blight

为了解决黑龙江省东部地区马铃薯晚疫病防治效果不好,药剂选择混乱等问题,本研究以延薯4号为试验材料,在黑龙江省农业科学院佳木斯分院试验地内采用随机区组试验对5种国内外防治晚疫病效果较好的杀菌剂(大生、增威赢绿、银法利、农割、金雷)的防治效果进行药剂筛选试验。结果表明:通过对马铃薯晚疫病病情指数、病薯率及产量性状的方差分析,明确了德国拜耳有限公司的银法利为防治马铃薯晚疫病效果最佳的药剂,第二次用药后14天的防效达到80.10%,晚疫病病情指数为0.80极显著优于其他药剂,其次为上海杜邦农化有限公司增威赢绿和农割。

In order to solve the problems such as the poor control effect of potato late blight and the confusion of pesticide selection in the east area of Heilongjiang province,In this study,Yanshu 4 was used as the material in this study with a randomized block test conducted in Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences to screen five native and foreign fungicides(Mancozeb,Zengwei Yinglu,Yinfari,Agricultural-cutting and Jinlei),which had better efficacy in preventing and controlling potatolate blight.According to the analysis of the disease index of potato late blight,the ratio of disease potato to the normal and yield character.The results indicated that Fluopicolide of the Bayer company in Germany was the best pesticide for controlling the potato late blight,14 days after the second fungicide experiment,the fungicide control effect reached 80.10%,late blight disease index of 0.80 was significantly superior to other agents.Then the Wei win green and agricultural cut of Shanghai DuPont Co.Ltd.have the second-class effect.This experiment would play a guiding role in the prevention and control of late blight of potato in the east area of Heilongjiang province.