Effects of Chemical Fertilizer Reduction and Efficiency Improvement on Grain Yield and Cultivated Land Quality
化肥减量增效对粮食产量与耕地质量的影响

摘要

化肥减量增效是以粮食稳产为前提，通过优化养分投入和施肥方式提高肥料利用率的农业绿色生产方 式。合理减量能够降低无效养分投入，减少土壤酸化和养分流失，并通过有机肥替代、秸秆还田和精准施肥 改善耕地质量。减量幅度超过土壤供肥能力和作物需求时，也可能引起土壤养分透支与粮食减产。化肥减量 应依据土壤肥力、作物类型和目标产量实施差异化管理，形成稳产、培肥与环境保护相协调的施肥体系。

Abstract

Chemical fertilizer reduction and efficiency improvement is a green agricultural production mode that improves fertilizer utilization efficiency by optimizing nutrient input and fertilization methods on the premise of maintaining stable grain production. Reasonable fertilizer reduction can reduce ineffective nutrient input, alleviate soil acidification and nutrient loss, and improve cultivated land quality through organic fertilizer substitution, straw returning, and precise fertilization. When the reduction range exceeds the soil nutrient supply capacity and crop demand, it may also lead to soil nutrient depletion and grain yield reduction. Chemical fertilizer reduction should be implemented through differentiated management based on soil fertility, crop type, and target yield, so as to form a fertilization system that coordinates stable production, soil fertility improvement, and environmental protection.