冀京津区域降雨量、降雨日数、相对湿度等气象因子未表现出明显的变化；
The results showed that the temperature had the tendency of increasing in these regions; the rainfall, raining days and relative humidity had no significant changes;
对寄生率影响较明显的为侵染期的降雨日数和前一年线虫脱出高峰期的露日数。
The rate of parasiting to the oriental armyworm is seriously influenced by the day number of raining of April and of dewing from 11-25, March of last year.
不同的天气系统在不同季节对降水的贡献有所不同，其中西来槽类的降雨量和降雨日数均居首位，开展人工增雨催化作业机会最多；
The contribution of various weather systems to precipitation varies in different seasons, and the rainfall and the number of rainy days induced by the westerly trough are the greatest.
不同的天气系统在不同季节对降水的贡献有所不同，其中西来槽类的降雨量和降雨日数均居首位，开展人工增雨催化作业机会最多；
The contribution of various weather systems to precipitation varies in different seasons, and the rainfall and the number of rainy days induced by the westerly trough are the greatest.
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