棉花红叶茎枯病又称棉花黄叶茎枯病、凋枯病，是棉花生育中、后期重要生理病害。镇平县过去虽有发生，但发生范围小，发生程度较轻。２００１年由于气候、土壤、耕作制度等综合因素引起了棉花红叶茎枯病的大流行。据统计，全县棉花种植面积６７００hm２，发生棉花红叶茎枯病的 Cotton leaf stem blight, also known as cotton yellow leaf blight, blight, is the cotton birth, an important physiological disease late. In the past, although the occurrence of Zhenping County, the occurrence of a small area occurred to a lesser extent. In 2001, due to climate, soil, farming system and other comprehensive factors caused the cotton leaf blight blight. According to statistics, the county cotton planting area of ​​6700hm2, the occurrence of cotton leaf blight