我县棉田分布在宁镇丘陵和茅山西侧丘陵地区.由于温光资源较好,春季气温回升快,棉花具有较明显的早发优势.但容易早衰,限制了棉花产量的提高,常年单产一直徘徊在70～80斤左右,最高年份单产也未超过百斤.为了探讨本地区棉花早衰的成因及其预防措施,两年来我们做了一些调查研究. The cotton fields in Ningxia are distributed in the hills of Ningzhen and the hilly areas west of Maoshan, and due to the better temperature and light resources and the quick recovery of temperature in spring, the cotton has more obvious advantages of early onset, but is prone to premature aging, limiting the increase of cotton yield and perennial yield. Hovering at about 70 to 80 pounds, the highest yield per year does not exceed the pound.In order to explore the causes of cotton premature aging in the region and its preventive measures, we have done some research in the past two years.