我省境内长江和汉江流域的广大平原地区,是本省的主要棉产区,也是全国的重要商品棉基地。该区常年植棉面积约630万亩,占全省植棉面积的74%左右,总产量(皮棉,下同)占全省总产的85%以上.但其单产水平不高不稳,究其原因,除棉田抗御严重自然灾害能力较差,农田水利基本建设不配套外,土壤缺钾、施肥比例严重失调是重 The vast plain areas of the Yangtze River and Hanjiang River drainage areas in our province are the major cotton producing areas in the province and also the major commodity cotton bases in the country. The perennial cotton area in this area is about 6.3 million mu, accounting for about 74% of the total cotton area in the province, with the total output (lint, the same below) accounting for more than 85% of the province’s total output. The reason, in addition to the cotton field resistance to severe natural disasters, poor, irrigation infrastructure construction is not complete, the soil potassium deficiency, a serious imbalance of fertilization is heavy