一、棉区耕作制度的演变与问题我省是全国主要产棉省之一。全省因自然地理条件的差异,可分为江汉平原、鄂东丘陵、鄂北岗地三大棉区。各棉区因气候土壤特点、生产水平的不同,种植制度也有差别。在茬口安排上,文化大革命前,江汉平原棉区由于多为水旱粮棉两夹,地多劳少,大、小麦茬分别占35％和25％,蚕豆和少量油菜占30％,实行麦,豆换茬;鄂东丘陵棉区,由于人多地少,肥力条件较好,小麦茬达80％以上,大麦、蚕豆茬比重较小,鄂北岗地棉区,由于地多劳少,土壤粘重,无霜期较短,棉田大多种冬绿肥和休闲,小麦茬不 First, cotton farming system evolution and problems of our province is one of the major cotton producing provinces. Due to the differences of natural and geographical conditions, the province can be divided into three major cotton areas: Jianghan plain, hilly East Hubei and northern Hubei. The cotton area due to the characteristics of climate and soil, the different levels of production, planting systems are also different. Before the Cultural Revolution, before the Cultural Revolution, most of the Jianghan Plain cotton plots were mostly cotton, cotton and cotton, with two or more clips of land, water and cotton, 35% and 25% respectively of large and small stubbles, 30% of broad bean and a few rapeseed, , Beans for stubble; hilly cotton area in eastern Hubei Province, due to the small number of people, better fertility conditions, wheat stubble reached more than 80%, barley, broad bean crop proportion is small, North Hubei Gangxian cotton area, Sticky, frost-free period is short, a large variety of winter green manure and leisure cotton, wheat stubble is not