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| 绿肥作物矿化分解对土壤中镉有效性的影响研究进展 |
| Research advance on the effect of mineralization and decomposition of green manure crops on soil cadmium availability |
| 投稿时间：2020-06-21 修订日期：2020-08-31 |
| DOI： |
| 中文关键词: 绿肥 矿化分解 镉有效性 作物 |
| 英文关键词: green manure mineralization and decomposition cadmium availability crop |
| 基金项目:国家绿肥产业技术体系昆明综合试验站(CARS-22-Z-14)Project supportedProject supported by Kunming Comprehensive Experimental Station for National Green Manure Industrial Technology System of CARS(CARS-22-Z-14) ,2,杨志新2,湛方栋2,付利波1* |
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| 中文摘要: |
| 绿肥是一种生物有机肥,其矿化分解过程在于将绿肥作物翻压进入土壤中被微生物分解后产生植物可直接利用和影响土壤Cd有效性的物质。但由于绿肥对Cd有效性具有双向影响,所以两者并非简单的线性相关。本文围绕着绿肥影响土壤中的可溶性有机质、pH值与Eh值、铁还原和微生物群落进而对Cd有效性以及对作物吸收镉影响进行综述。表明：在绿肥的翻压进入土壤后被微生物分解的过程中,土壤中的可溶性有机质、pH值与Eh值、铁还原和微生物群落均具备影响重金属Cd在土壤中迁移的功能,它们可以将重金属固定在土壤中或在植物根系表面沉淀。经过作物各类细胞层层拦截,降低Cd向地上部分的转运,最终只有极少数的Cd到达作物的可食用部分,达到修复Cd污染的目的。 |
| 英文摘要: |
| The green manure is a kind of biological organic fertilizer. The process of mineralization and decomposition is to turn the green manure crop into the soil and decompose it by microorganisms to produce substances that can be directly used by plants and affect the effectiveness of soil Cd. However, because green manure has a two-way effect on the effectiveness of Cd, the two are not simply linearly related. This article reviews the effects of green manure on soluble organic matter, pH and Eh, iron reduction, and microbial communities in soil, and then reviews the effectiveness of Cd and the effects of cadmium uptake by crops. It shows that during the decomposition of green manure into the soil by microorganisms, the soluble organic matter, pH and Eh values, iron reduction and microbial community in the soil all have the function of affecting the migration of heavy metals Cd in the soil. They can remove heavy metals Fixed in the soil or precipitated on the surface of plant roots. After intercepting various layers of cells in the crop to reduce the transfer of Cd to the above-ground part, only a very small amount of Cd finally reaches the edible part of the crop to achieve the purpose of repairing Cd pollution. |
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