我区在棉花生产上属于黄河流域棉区。在土质上形成了以砂姜黑土与潮土相间交错分布为主的特殊组合。在土壤有效养分的含量上，有“缺磷少氮，有机质不足”的特点。特别是近年来，由于棉农偏施氮肥，棉花长期连作，不施或少施磷钾肥，造成了土壤中有效磷更加缺乏，速效钾相对不足 My district belongs to the cotton area of ​​the Yellow River in cotton production. Formed in the soil with sand Jiang black soil and soil alternating between the staggered distribution of the special combination. Effective soil nutrients in the content, “lack of phosphorus less nitrogen, less organic ” features. Especially in recent years, due to partial nitrogen fertilizer, cotton long-term continuous cropping, no or less phosphorus and potassium fertilizers, resulting in a more available phosphorus deficiency in the soil, the relative shortage of available potassium