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- W2373157084 abstract "In-situ immobilization of heavy metal contaminated soils is a cost-effective remediation technique. However, stabilizing agents are critical to this technique. Here five amendments, including calcium-based montmorillonite(MT), fused calcium-magnesium phosphate(CMP), phosphorus rock(PR), superphosphate(SP), and triple superphosphate(TSP), were chosen to remediate a Cd-contaminated farmland soil. All amendments were applied at 1.3 kg·m-2alone or in combination with 0.52 kg·m-2lime. Two season crops(wheat and rice) were grown after amendment applications. Amendments significantly reduced the uptake of Cd in crop grains. CMP and MT with lime had the greatest Cd reduction in wheat(78.7% and 72.8% respectively), while CMP and TSP with lime were the best for Cd reduction in rice(82.83% and 67.43%, respectively). Most amendments greatly decreased dissolved fraction of Cd in soil, due to increased soil pH. Cadmium contents in grains showed a significant negative correlation with soil pH, but a significant positive correlation with soil acid-soluble Cd. Applications of amendments, especially dissolvable P fertilizers, significantly increased crop production, might due to reduced Cd toxicity and improved Ca, Mg and P nutrition. The results show that CMP with lime provides the best Cd immobilization for both wheat and rice. MT with lime would also be a good amendment for wheat under limited P fertilizers." @default.
- W2373157084 created "2016-06-24" @default.
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- W2373157084 date "2014-01-01" @default.
- W2373157084 modified "2023-09-23" @default.
- W2373157084 title "In-situ Remediation of Cadmium-polluted Agriculture Land Using Stabilizing Amendments" @default.
- W2373157084 hasPublicationYear "2014" @default.
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