EFFECTS OF SOME SAFE UTILIZATION MEASURES ON RISK MANAGEMENT OF CADMIUM CONTAMINATED PADDY FIELDS IN CHENGDU PLAIN

LIU Heng-bo; YONG Yi; LIU Zheng; YAO Qin-ying; HUANG Xiang; WU Yi

doi:10.13205/j.hjgc.202106025

Volume 39 Issue 6

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(6): 167-172

LIU Heng-bo, YONG Yi, LIU Zheng, YAO Qin-ying, HUANG Xiang, WU Yi. EFFECTS OF SOME SAFE UTILIZATION MEASURES ON RISK MANAGEMENT OF CADMIUM CONTAMINATED PADDY FIELDS IN CHENGDU PLAIN[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 167-172. doi: 10.13205/j.hjgc.202106025

Citation:

LIU Heng-bo, YONG Yi, LIU Zheng, YAO Qin-ying, HUANG Xiang, WU Yi. EFFECTS OF SOME SAFE UTILIZATION MEASURES ON RISK MANAGEMENT OF CADMIUM CONTAMINATED PADDY FIELDS IN CHENGDU PLAIN[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 167-172. doi: 10.13205/j.hjgc.202106025

Citation:

LIU Heng-bo, YONG Yi, LIU Zheng, YAO Qin-ying, HUANG Xiang, WU Yi. EFFECTS OF SOME SAFE UTILIZATION MEASURES ON RISK MANAGEMENT OF CADMIUM CONTAMINATED PADDY FIELDS IN CHENGDU PLAIN[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 167-172. doi: 10.13205/j.hjgc.202106025

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EFFECTS OF SOME SAFE UTILIZATION MEASURES ON RISK MANAGEMENT OF CADMIUM CONTAMINATED PADDY FIELDS IN CHENGDU PLAIN

doi: 10.13205/j.hjgc.202106025

Sichuan Academy of Environmental Sciences, Chengdu 610041, China

Received Date: 2020-06-03
Available Online: 2022-01-18

Abstract

Abstract

Field plot experiment was conducted to investigate the effects of several common safety utilization measures such as substitute plantation, deep ploughing, application of soil remediation agents and organic fertilizers on risk management of cadmium contaminated paddy fields in Chengdu Plain. The results showed that after 3 days of the implementation of various measures, soil pH significantly increased(p<0.05), except treatment applying earthworm cast and substitute plantation; except for treatment of substitute plantation, applying earthworm cast and soil remediation, the bioavailable form of cadmium content of soil generally decreased compared with before implementation; when the substitute plantation treatment was taken separately, the cadmium content of brown rice of rice varieties selected in this experiment could not fully meet the national standard; the best cadmium reduction effect among single measures was deep ploughing, followed by the application of soil remediation agent, quicklime and modified bentonite, while the application of earthworm cast alone significantly increased(p<0.05) the cadmium content of brown rice; after No.4 combined measures(deep ploughing+applying quicklime+application of soil remediation+planting the improved variety Liangyou No.1), the cadmium content of brown rice generally met the national standard, and the average brown rice cadmium content was the lowest among all measures, which was significantly reduced by 95.52%(p<0.05) compared with the control.
- soil,
- cadmium pollution,
- rice,
- safety utilization,
- risk control

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References(40)

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