The heat resource is analyzed with the data of the dailymeantemperature of the meteorological stations in Pengzhou city.
利用彭州市境内市气象站、新兴、白果坪的日平均气温资料，进行热量资源分析。
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The data of dailymeantemperature, precipitation and wheat yield in Liuzhi special zone from 1988 to 2008 were used to analyze the relationship between lower temperature in spring and wheat yield.
By means of the five day overlapping average, the geographic distributions of the occurrence of the coldest date and dailymeantemperature in China are analyzed in the pa-per.