ABSTRACT

Crop residues are mainly post-harvest remains of agriculture. The organic matters, nutrients, and hollow structures of crop residues enable them to be applied in agriculture. In this review, we summarize the impacts of crop residues on soil health. Crop residue returning is beneficial to soil physicochemical properties. Soil water content, total porosity, aggregate stability, cation exchange capability (CEC), organic carbon, phosphorus, and potassium all increased after being amended with crop residues. The negative effects of allelochemicals from crop residues on crop growth can be adjusted by crop residue returning management. The rice straw has positive impacts on soil microbial properties. Besides, crop residue play a crucial part in soil remediation. Crop residues as soil amendments have inhibitory effects on some heavy metals, organic pollutants, and pathogens. They can also alleviate the pressure of saline-alkali soil. Finally, we provide some suggestions for improving soil health with crop residues.

摘要

作物残留物主要是收获后的农业残留物。作物残留物的有机物、养分和中空结构使它们能够应用于农业。在这篇综述中，我们总结了作物残留物对土壤健康的影响。作物秸秆还田有利于土壤理化性质的改善。土壤水分含量、总孔隙度、团聚体稳定性、阳离子交换能力（CEC）、有机碳、磷和钾均在经过作物残留修正后增加。作物残留物化感物质对作物生长的负面影响可以通过作物残留物返还管理进行调整。稻草对土壤微生物特性具有积极影响。此外，作物残留物在土壤修复中起着至关重要的作用。作为土壤改良剂的作物残留物对某些重金属有抑制作用，有机污染物和病原体。它们还可以减轻盐碱地的压力。最后，我们提供了一些利用作物残留物改善土壤健康的建议。