全面分析评价了天津地区耕层土壤钾素丰缺状况，通过冬小麦、夏玉米轮作体系下不同施肥措施对土壤钾素影响的定位试验表明，单施氮磷化肥加速了土壤钾素耗竭，在现有生产水平下每作增施钾肥１５０ｋｇ／ｈｍ２和增施钾肥加秸杆还田措施可维持土壤钾素平衡，尚有盈余，达到增产增收的效果。 A comprehensive analysis and appraisal of the status of potassium abundance in tillage soil in Tianjin region was conducted. Positioning experiments on the effect of different fertilization measures on soil K under winter wheat and summer maize rotation system showed that application of N and P fertilizers accelerated the depletion of soil K, Under the production level, each increase of 150kg / hm2 of potash fertilizer and increase of potassium fertilizer plus straw returning to soil can maintain the balance of potassium in the soil, and there is a surplus to achieve the effect of increasing production and increasing income.