【摘要】 在室内人工气候箱内,通过人工接种和模拟高温高湿环境的方法研究了黄瓜白粉病的发生和流行趋势,采用SAS统计软件对试验数据进行相关和回归分析,建立了黄瓜白粉病始病期与流行程度的预测模型。始病期预测模型的RMSE值在2以下,流行程度预测模型的RMSE值在6以下,表明模型可对塑料大棚黄瓜白粉病始病期和流行程度进行定量预测。更多还原

【Abstract】 The occurrence and development of cucumber powdery mildew was investigated under simulated plastic tunnel condition. The forecasting models of disease occurrence on-set date and disease severity were established by regression, and their root mean squar error (RMSE) values were less than 2 and 6, respectively. The results demonstrated that these models could be used to forecast the occurrence and epidemics of cucumber powdery mildew in the plastic tunnel.更多还原