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西峡县地处伏牛山南坡,属于河南省西部山地生态类型麦区。其生态条件基本适宜小麦生长,但气温偏低,全年无霜期近200天。因地形地貌复杂,造成农田“小气候”差异大。冬季寒潮频繁,突变性大,加之冬季缺雨雪,极易形成冻害。如1987年入秋后,气温下降,而11月下旬又回升到13.4℃,最高达22.0℃,12月上旬突然降至
Xixia County is located in southern slope of the Funiu Mountain, belonging to the mountainous ecological type wheat area in western Henan Province. Its ecological conditions are basically suitable for wheat growth, but the temperature is low, the annual frost-free period of nearly 200 days. Due to the complex terrain, resulting in farmland “microclimate” big difference. Frequent cold winter, mutation, coupled with the lack of winter snow, can easily form frost damage. After entering the autumn of 1987, the temperature dropped, and in late November it rose again to 13.4 ° C up to 22.0 ° C. In early December, it suddenly dropped to