Analysis of the Diurnal Variation Trend of the Initial and Final Frost and Frost Prevention in Hetao Region
Qiu Qiaoling;Bayannaoer Meteorological Bureau;
Using the annual minimum air temperature data for 40 years(from 1971 to 2010) of 5 meteorological stations in Hetao area of Bayan Nur City, variation characteristics about the initial(Autumn)and final(Spring) frost date and frost-free season in the Hetao area in recent 40 years were analyzed though the statistical method. The results showed that the Hetao area initial frost date was pushed back, and final frost date was bring forward. In other words, frost-free season gradually extended, and frost disaster decreasing year by year. Through the analysis of data, it can help us to understand the characteristics of frost climate change in Hetao area, so that it can provide a reference for the frost disaster forecast and plantation structural adjustment of crops in the crop planting.
【CateGory Index】： P423.4