对两个品种多播期 ,覆膜与不覆膜对比试验结果表明 ,积温与棉花单株产量、棉铃粗纤维含量、棉仁粗蛋白含量呈显著正相关 ;棉铃粗纤维含量与棉花单株产量呈显著正相关。选择适宜品种、适期早播、覆膜 ,能获得较高的积温 ,利于棉铃粗纤维的积累 ,提高棉花的产量和品质 The results of the comparison between the two cultivars on the multi-sowing date, mulching and non-mulching showed that the accumulative temperature was positively correlated with the yield per plant, the crude fiber content of cotton bolls, and the crude protein content of cotton bolls; There was a significant positive correlation. Select the appropriate varieties, early sowing the appropriate period, covered, get a higher accumulated temperature, which will help the accumulation of cotton boll fiber and improve the yield and quality of cotton