为更好解决枣阳地区作物秸秆还田再利用与优化施肥，本研究选择了在大田条件下进行小区试验，研究探讨枣阳市区域麦秸还田下钾肥替代下土壤养分变化情况和增产效果的影响，结果表明：1) 麦秸可以替代部分钾肥从而保证水稻正常生长，进而达到高产稳产的目的，且在p < 0.05下麦秸还田钾肥替代对水稻产量影响极显著，水稻产量高达701 Kg/667m2。2) 秸秆还田与钾肥替代均可提高土壤的有机质、全氮含量，使土壤pH保持稳定的水平，还能够减少土壤速效钾的损失，增加土壤缓效钾的含量，缓解了土壤钾素的亏损。
In order to solve the problems of crop straw in Zaoyang district that is returning to the field for reuse and optimization of fertilization, this research selected a part of field experiment under the big field area to study the change of soil nutrients and the effect of increasing yield under the replacement of potassium fertilizer under wheat straw returning to the field in Zaoyang district. And the result shows that: 1) wheat straw can replace part of the potassium fertilizer to ensure the normal growth of rice, and then achieve the purpose of high and stable yield, and when p < 0.05, the substitution of wheat straw back to the field of potassium fertilizer has a significant impact on rice yield, and the rice yield is as high as 701 kg/667m2; 2) straw returning and potassium replacement can improve the content of organic matter and total nitrogen in the soil to keep the stable level of soil pH and reduce the loss of soil available potassium and increase the content of slow-release potassium in the soil, and alleviate the loss of soil potassium.
