3种新药剂对河北省苹果轮纹病病原菌的抑制效果

摘要

The Inhibition effect of 3 new and 3 general fungicides on Botryosphaeria dothidea was tested by measur-ing mycelium growth rate, and the curative effects of the field were also tested.The result showed that the percent-age of inhibitive efficiency of the 6 fungicides were more than 90%, and among which, bordeaux paste, tebucon-azole and healing agent had the best inhibition to the growth of Botryosphaeria dothidea.The inhibitive efficiency of the 3 fungicides were 100 %, 100 %and 99.71 %respectively .When the fungicides were applied with recom-mended dosage by manufacturers , the results of curative effects and inhibition effect on mycelium growth were con-sistent, and the curative effects after scraping the lesions were better.The curative effects of these fungicides, ex-cept thiophanate-methyl, were more than 90 %.Bordeaux paste , tebuconazole and healing agent had the best control efficiency with a percentage of more than 97 %.%采用菌丝生长速率法在室内测定了3种新药剂与3种常规杀菌剂对苹果轮纹病病原菌的抑制效果，并测定了各药剂的田间防治效果。结果表明，6种药剂对苹果轮纹病病原菌菌丝生长的抑制效果均达到90％以上，其中戊唑醇、波尔多浆和腐愈灵的抑菌效果最佳，前两者抑制效果达100％，后者为99.71％。田间防治效果与室内抑菌力测定结果一致，且刮除病斑后施药处理的防治效果更好，除甲基硫菌灵外各药剂的防治效果均达到90％以上，波尔多浆、戊唑醇和腐愈灵的田间防治效果最高，防效高于97％。