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采用人工接种和自然发病相结合 ,促进草坪草染病和病情严重 ,通过病情调查发现草地早熟禾、紫羊茅、高羊茅和多年生黑麦草对腐霉枯萎病感性有差异 ,它们分别代表极感、高感、中感和低感类型 ;用 5 0 g/ 6 6 6 .7m2 药量喷雾 ,可基本控制后 3种草坪草的病情 ,但对草地早熟禾未能达到有效控制 ,用等比系列药量试验结果 ,在ED50 和ED95平均值水平上 ,草地早熟禾是 44 .6 180 .1g ,紫羊茅是2 5 .976 .9g,高羊茅是 15 .6 6 5 .5 g ,多年生黑麦草是 12 .949.3g ;根据这些试验结果模拟出在草坪上防治腐霉枯萎病的适宜用药量
The combination of artificial inoculation and natural disease promotes turfgrass disease and serious illness. Through the investigation of the disease, the responses of bluegrass, red fescue, tall fescue and perennial ryegrass to the susceptibility to Pythium blight are different, which represent the extreme , High sense, medium sense and low sense type. The spray of 50 g / 66.77m2 dose could basically control the condition of the three turfgrasses, but did not achieve effective control on the turfgrass, The series of dose test results showed that on the average ED50 and ED95 levels, the bluegrass was 44.6180.1g, the blue fescue was 25.976g, the tall fescue was 15.665.5g, Perennial ryegrass is 12 .949.3g; based on these test results to simulate the lawn against Pythia blight the appropriate dosage