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1995～2001年以5μg/ml为检测标准,对通州地区油菜菌核病抗药性进行了室内测定和田间试验。结果表明,油菜菌核病已在大范围内对多菌灵产生抗性,导致其防效显著下降,其中抗性比例最高达100%。离体和活体抗性程度测定表明,其抗性菌株皆为高抗菌株,EC50>100μg/ml,MIC(最低抑制浓度)>1000μg/ml。为了解决此问题,筛选出高效的防治药剂菌核净、万霉灵、使百克,提出了油菜菌核病的最佳防治适期。
From 1995 to 2001, 5μg / ml was used as the standard to test the resistance of sclerotinia sclerotiorum in Tongzhou area. The results showed that sclerotinia sclerotiorum had resistance to carbendazim in a wide range, leading to a significant decrease in its control effect, of which the resistance ratio up to 100%. The results of in vitro and in vivo resistance test showed that all the resistant strains were highly antibacterial strains with EC50> 100μg / ml and MIC (minimum inhibitory concentration)> 1000μg / ml. In order to solve this problem, screened out highly effective control agents sclerotium net, Wan mold spirit, so that 100 grams, put forward the best prevention and control of rape sclerotiorum.