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胡麻白粉病是胡麻生产中常发性病害之一,对胡麻产量和质量影响较大。2010年在康保县胡麻生长季节,对胡麻白粉病发生程度进行了定期、定点观察。分析了该病田间发生、流行的影响因素;明确了田间降雨、相对湿度和雾露日数是影响胡麻白粉病发生和流行主要因子;田间种植密度、长势影响白粉病发生程度,密度大、长势好的发病重。同时就全国主栽品种对白粉病的抗性进行了试验,结果表明参试的9个胡麻品种在田间的抗病性差异显著,其中未发现免疫(I)品种,伊亚4号、晋亚7号、陇亚10、坝亚11、轮选2号、轮选1号等6个品种表现高抗(HR),陇亚9号表现抗病(R),宁亚14表现中抗(MR),坝亚12表现高感(HS)。
Flax powdery mildew is one of the common diseases in the production of flax, which has a great impact on the yield and quality of flax. In 2010, during the growing season of flax in Kangbao County, the incidence of powdery mildew in flax was regularly and fixedly observed. The influencing factors of occurrence and prevalence in the field were analyzed. It was clarified that the field rainfall, relative humidity and the number of days exposed to fog were the main factors influencing the occurrence and prevalence of powdery mildew. The field density and growth affected the incidence of powdery mildew, the density was high and the growth was good The incidence of heavy. At the same time, the resistance of the main cultivars to powdery mildew in China was tested. The results showed that there were significant differences in the disease resistance of 9 flax cultivars tested in the field, among which no immune (I) cultivars were found, Oia 4, 6 varieties such as No.7, Longya10, Ba Ya11, No.2 and No.1 showed high resistance (HR), Longya 9 showed disease resistance (R), Ningya 14 showed moderate resistance ), Dam 12 high sense of performance (HS).