农业气候资源通常用具有一定农业意义的气候要素值来表征。例如热量方面有生长期、各级界限温度的积温(0℃、5℃、10℃……)及其持续日数等。本文对山地界限温度的计算方法谈点粗浅看法,供讨论。一、界限温度初、终期的求算确定界限温度初、终期的统计方法很多,如五日滑动平均法、二倍偏差法、图解 Agricultural climatic resources are often characterized by climate-element values ​​of agricultural significance. For example, there are growing periods of heat, accumulated temperature (0 ° C, 5 ° C, 10 ° C, ...) of the boundary temperatures at all levels and their durations. This article discusses the calculation method of mountain limit temperature. First, the boundary temperature of the beginning and the end of the calculation to determine the initial temperature limit, the final statistical methods are many, such as the five-day moving average method, double deviation method, graphic