根据固原气象站35年（1957～1991）雨量资料，应用马尔可失链模型预测了该区1992～1996年的雨量与旱情趋势。
Base on the rainfall data of 35 years ( 1957-1991 ) at Guyan meteorological observation , the rainfall and drought condition in Guyan region for 1992 to 1996 year are predicted by Markov chain model .
固原站