Increase bio-fertilizer and organic fertilizer, especially in low temperature seasons. Pay attention to soil moisture; too dry or too wet is unfavorable for degradation. Use small water volume irrigation. Long-term bio-fertilizer use improves soil structure, promotes crop growth, and reduces pests. Deep plowing after harvest moves salt-containing topsoil to bottom and relatively salt-free soil to top. Remove film to ventilate; wind and rain flush surface salts deeper. Avoid consecutive cropping through rotation to allow soil recovery. Use only well-rotted manure.