霜霉病害流行的气象条件及其对作物的影响分析

Meteorological condition of downy mildew disease and its influence on crops

本文利用清徐县1981-2016年气温、降水、相对湿度等气象资料，以葡萄为研究对象，重点对2016年清徐县葡萄气象灾害的霜霉病发病率进行了调研，并且与前，35年的气象资料作了对比分析。得出结论：霜霉病在葡萄中流行的气象基本条件是，高湿低温，即10d内出现5次及以上阴雨寡照天气过程、连续降雨量≥100mm、相对湿度≥80％、气温11℃～30℃。此结论可以作为葡萄霜霉病的气象预警指标。

Based on annual temperature, precipitation, relative humidity and other meteorological data of Qingxu from 1981 to 2016, downy midew of grape and meteorological condition were investigated, and comparied with earlier stage. The results showed that the basic meteorological temperature, which meaned 5 or more cloudy and drizzly condition for weather, con downy midew was high tinuous rainfall more than humidity more than 80%, and temperature between 11 and 30℃. This conclusion can be used warning index of grape downy mildew humidity and low 100 mm, relative as meteorological