一、中国的棉区划分及主要棉区的生态条件1 .中国的五大棉区。我国植棉地域辽阔 ,东起辽河流域及长江三角洲 ,西至塔里木盆地西缘 ,南自海南岛崖县 ,北抵玛纳斯河流域 ,在北纬 1 8°～ 4 6°、东经 76°～ 1 2 4°之间。在这宽广的地区里 ,各地的宜棉程度差别很大 ,棉田的集中 First, China’s cotton division and the ecological conditions of the main cotton area 1. China’s five major cotton areas. China has a vast area of ​​cotton transplanting, starting from Liaohe River Basin and the Yangtze River Delta to the east, west to the Tarim Basin in the west, Cliff County in Hainan Island to the south and Manas River basin to the north, with latitudes 18 ° ~ 46 ° and latitude 76 ° ~ 1 2 4 ° between. In this vast area, there is a great difference in the degree of cotton everywhere and the concentration of cotton fields