几种药剂防治柑橘黑斑病的田间药效试验

Field experiments of several fungicides for control citrus black spot

为筛选出防治柑橘黑星病的有效药剂,以南丰蜜橘为研究对象,对柑橘黑斑病进行田间防治试验。结果表明:10%苯醚甲环唑1000倍防治效果最好,防治效果为92.32%;80%代森锰锌+70%甲基托布津复配500倍防治效果次之,防治效果为91.45%;依次是80%代森锰锌400倍、70%甲基托布津400倍和10%苯醚甲环唑1500倍,防治效果分别为87.32%、84.65%和83.56%。

Field experiments of four fungicides for controlling citrus black spot on nanfeng tangerine were conducted to select the better effective treatments. The results showed that the control efficacy of 10% difenoconazole at 1 ： 1000 dilution had the best inhibitive effect on Porna citricarpa McAlpine, whose control efficacy was 92.32% , 1 ： 1 mixture of 70% thiophanate - methyl with 80% mancozeb at 1 ： 500 dilutionhad the better effective, whose control efficacy was 91.45% , The control efficacies of 80% mancozeb at 1：400,70% thiophanate -methyl at 1： 400 and 10% difenoconazole at 1：1500 dilution were 87.32% ,84.65% and 83.56% respectively.