为及时准确预报马铃薯晚疫病在天水市的发生与流行，甘肃省天水市农业科学研究所在天水市秦州区中梁乡何家湾村马铃薯基地，运用DAVIS自动气象站收集马铃薯主要生育期内温度、湿度及降水量数据，运用比利时CARAH 马铃薯晚疫病监测预警模型进行分析，以确定马铃薯主要生育期内，晚疫病病菌生成潜在侵染的次数和代数，准确地预报发病期，确定最佳防治期及防治次数。2013 年在马铃薯生长期间(5月20日至9月30日)，晚疫病病菌共繁殖15代，共产生39次侵染，其中轻度侵染9次，中度侵染8次，重度侵染 4 次，极重度侵染 18次。根据预警系统预测结果，用70%安泰生可湿性粉剂作为保护性药剂，用687.5 g/L 银法利悬浮剂作为治疗性药剂进行防治，平均防效达78.4%，比大田对照提高11.1百分点，平均鲜薯产量达27 833.3 kg/hm2，比大田对照增产17.19%。

To accurately predict the occurrence and popular of potato late blight timely and accurate in the Tianshui area，the automatic meteorological station is established by Tianshui Institute of Agricultural Sciences. The data of temperature， humidity and rainfall during main potato growth period using DAVIS automatic meteorological station are collected from Hejiawan village， Zhongliang county of Qinzhou area， and analyzed by belgium CARAH potato late blight monitoring and warning model. Determining late blight phytophora infestans number and algebra latent infection in the main potato growing period toforecast late blight period accurately and determining the period and control the best control number. During the growth of potato (from 2013 May 20th to September 30th)， late blight has bred 15 generations，a total of 39 times of infection， including lighter infection 9， moderate infection 8 times， 4 times of severe infection， extremely severe infection 18. According to the results of early warning system， with 70% Antaisheng WP as a protective agent and 687.5 g/L Yinfali DF as a therapeutic agent for prevention and treatment， the average control effect reached 78.4%， increased is 11.1 percentage points higher than that of the control field， the average yield reached 27 833.3 kg/hm2，which is 17.19% higher than that of the check in the field.

S451.22

国家现代农业产业技术体系专项资金(CARS-10)；国家农业科技成果转化项目(2014GB2G100146)；甘肃省农业生物技术研究与应用开发项目(GNSW-2014-1)