An integrated three-crop rotation of oilseed rape−rice−rice enables the safe utilization and sustainable remediation of Cd-contaminated farmland

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Environmental Technology & Innovation Pub Date : 2025-03-08 DOI:10.1016/j.eti.2025.104123

Liang Wang , Qiqing Liu , Fenghua Zhao , Jun Yang , JingYi Fu , Xiaoyong Liao

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引用次数: 0

Abstract

A sustainable strategy for cadmium (Cd)-contaminated farmland was developed using a rape−rice−rice rotation system. This method combines early maturing and high Cd-accumulating rape variety with low Cd-accumulating rice varieties and alkaline Si-rich fertilizer. Field experiments compared different planting patterns: single-season rice (SR), oilseed rape−rice rotation (OR), rice-rice rotation (RR), modified oilseed rape-rice rotation (MOR), and integrated three-crop rotation (MORR). MORR significantly reduced Cd content in rice grains, boost total crop yield, and enhanced soil Cd removal. It achieved a comprehensive evaluation index of 0.99, safe crop production over three seasons, a soil Cd removal rate of 87.338 g/ha/yr, and economic benefits of 34,915 CNY·ha⁻¹. Simulations based on the Cd input-output balance showed MORR cleaned soil Cd below standards in 12 years, outperforming the 15 years required by the Sedum alfredii and peanut rotation (SP). MORR minimized health risks from Cd exposure, balancing safe production, soil remediation, and farmer income, offering a viable solution for sustainable use of Cd-contaminated farmland.

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来源期刊

Environmental Technology & Innovation Environmental Science-General Environmental Science

CiteScore

14.00

自引率

4.20%

发文量

435

审稿时长

74 days

期刊介绍： Environmental Technology & Innovation adopts a challenge-oriented approach to solutions by integrating natural sciences to promote a sustainable future. The journal aims to foster the creation and development of innovative products, technologies, and ideas that enhance the environment, with impacts across soil, air, water, and food in rural and urban areas. As a platform for disseminating scientific evidence for environmental protection and sustainable development, the journal emphasizes fundamental science, methodologies, tools, techniques, and policy considerations. It emphasizes the importance of science and technology in environmental benefits, including smarter, cleaner technologies for environmental protection, more efficient resource processing methods, and the evidence supporting their effectiveness.