花生网斑病的田间药效试验

A Field Efficacy Trial on Peanut Web Blotch Control

为筛选出防治花生网斑病的新型药剂,通过田间药效试验,研究了13种杀菌剂对花生网斑病的田间防效和对花生主要农艺性状及产量的影响。结果表明,13种杀菌剂的防治效果在32.19%~72.08%之间,其中60%唑醚·丙环唑WG、30%苯甲·丙环唑EC、43%戊唑醇SC的防治效果较好,防效分别为72.08%、72.03%、71.06%。各处理对花生产量的增幅在8.81%~24.87%之间。其中增产效果较好的为43%戊唑醇SC、60%唑醚·丙环唑WG、30%苯甲·丙环唑EC、75%肟菌·戊唑醇WG的处理,分别为24.87%、22.80%、21.76%、20.72%。13种药剂中60%唑醚·丙环唑WG、30%苯甲·丙环唑EC的防治效果和增产效果最好,因此可以作为生产上防治花生网斑病较为理想的杀菌剂。

In order to screen out new fungicides against peanut web blotch,the control effect of 13 fungicides on peanut web blotch,main agronomic traits and yields of peanut were investigated through field trial.The results showed that the control effect of 13 fungicides on peanut web blotch was 32.19%~72.08%,reached significant difference,and among them,60%pyraclostrobin-propiconazole WG,30%difenoconazole-propiconazole EC,43%tebuconazole SC were better than other fungicides,with 72.08%,72.03%and 71.06%control effect,respectively.The yield of all treatments increased as 8.81%~24.87%,and the yield-increasing effect of 43%tebuconazole SC,60%pyraclostrobin-propiconazole WG,30%difenoconazole-propiconazole EC and 75%trifloxystrobin-tebuconazole WG were better than other fungicides,with 24.87%,22.80%,21.76%and 20.72%,respectively.These data suggested that the control effect and production increase effect of 60%pyraclostrobin-propiconazole WG and 30%difenoconazole-propiconazole EC were the best among 13 fungicides,and so they can be used as ideal fungicides to control peanut web blotch in production.