塔里木大学学报

新疆棉花面积大，有着丰富的棉籽饼、棉秆资源，将其直接还田后当年可分别增产籽棉15．7％～30％、8．5％～14．6％；可保持和提高土壤养分，是连作棉田土壤有机质来源的重要途径。抓好棉籽饼、棉秆还田和化肥深施，把三者合理地融为一体，是培肥地力，维护棉田土壤肥力，解决大农业条件下有机肥不足的有效措施。

Because of a huge acreage under cotton,there are abundant Resourccs of cotton seed cake and cotton stalk in Xinjiang.Their direct return to soil can increase unginned cotton by 15. 7% ~ 30%, 8.5 ~ 14. 6%, which maintain and improve soil nutrient and is an important sources of soil organic matter for continuous cropping. Direct Return to soil of cotton seed cake and cotton stalk, deep opplication of chemical fertilizer are effective measures in culturing fertility, malntaining land capability, and solving organic fertilizer's shortage of modern agriculture.