我们卓资县属于高寒干旱地区,海拔1300～2100米,作物生育期只有106天左右, 10℃积温在1500～2300℃之间,年降水量390毫米左右。从1960年到1979年的20年间,农作物常因干旱和低温冷害造成不同程度的减产。如果以低于20年平均粮食亩产10%以上做为灾害性年份,20年中共有灾害性年份5年,平均4年遭灾一次。在这5年中有一年是因 10℃积温低减产的, We Zhuozili County is cold and arid region, elevation 1300 ~ 2100 meters, crop growth period of only about 106 days, 10 ℃ accumulated temperature between 1500 ~ 2300 ℃, the annual rainfall of about 390 mm. In the 20 years between 1960 and 1979, crops were often cut to varying degrees due to drought and chilling. If less than 20% of the average grain yield more than 10% as a catastrophic year, 20 years, the catastrophic years of 5 years, an average of 4 years once hit. In the past five years, one year is due to the low temperature output of 10 ℃,