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[Remedying Effects of a Combined Amendment for Paddy Soil Polluted with Cd for Spring and Autumn Rice].
Huan Jing Ke Xue. 2017 Jun 08; 38(6):2546-2552.HJ

Abstract

An in-situ paddy experiment was conducted to study the remedying effects of a combined amendment(calcium carbonate+diatomite+ferric sulfate) on Cd bioavailability in soil and Cd accumulation in rice for spring and autumn rice planted in a certain Cd contaminated paddy soil in Beishan Town, Changsha, Hunan Province. The results showed that:Application of the combined amendment significantly increased soil pH and CEC values in both cultivated seasons, but decreased soil OM contents for the spring rice. During the experiment, the contents of TCLP-extractable Cd and CaCl2-extractable Cd in soil were reduced by 18.0%-33.0% and 5.4%-57.9%, respectively. The Cd contents in brown rice, husk, leave and root for the spring rice decreased by 29.6%-56.1%, 52.1%-54.0%, 18.1%-80.7% and 24.4%-41.6%, respectively, due to application of the combined amendment. There were significant differences in Cd transport capacity between spring rice and autumn rice, and the transportation of soil Cd in autumn rice was smoother than that in spring rice. For the autumn rice, the effects of the combined amendment were not significant(P>0.05), except that the Cd content in husk increased a little after applying 2 g·kg-1 of the combined amendment. Significant positive correlations were found between the Cd contents in brown rice and the contents of TCLP-extractable Cd or CaCl2-extractable Cd in soil. Application of the combined amendment effectively inhibited Cd uptake by rice root and reduced Cd content in brown rice for the spring rice; however, these remedying effects were significantly weakened for the autumn rice due to loss of the combined amendment with the movement of irrigation water in the spring season. Therefore, we suggest that supplement of the combined amendment is necessary between two rice cultivated seasons.

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Authors+Show Affiliations

College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China.

MeSH

CadmiumCalcium CarbonateDiatomaceous EarthFerric CompoundsOryzaSeasonsSoilSoil Pollutants

Pub Type(s)

Journal Article

Language

chi

PubMed ID

29965376

Citation

Chen, Li-Wei, et al. "[Remedying Effects of a Combined Amendment for Paddy Soil Polluted With Cd for Spring and Autumn Rice]." Huan Jing Ke Xue= Huanjing Kexue, vol. 38, no. 6, 2017, pp. 2546-2552.

Chen LW, Yang WT, Gu JF, et al. [Remedying Effects of a Combined Amendment for Paddy Soil Polluted with Cd for Spring and Autumn Rice]. Huan Jing Ke Xue. 2017;38(6):2546-2552.

Chen, L. W., Yang, W. T., Gu, J. F., Zhou, H., Gao, Z. X., & Liao, B. H. (2017). [Remedying Effects of a Combined Amendment for Paddy Soil Polluted with Cd for Spring and Autumn Rice]. Huan Jing Ke Xue= Huanjing Kexue, 38(6), 2546-2552. https://doi.org/10.13227/j.hjkx.201611112

Chen LW, et al. [Remedying Effects of a Combined Amendment for Paddy Soil Polluted With Cd for Spring and Autumn Rice]. Huan Jing Ke Xue. 2017 Jun 8;38(6):2546-2552. PubMed PMID: 29965376.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - [Remedying Effects of a Combined Amendment for Paddy Soil Polluted with Cd for Spring and Autumn Rice]. AU - Chen,Li-Wei, AU - Yang,Wen-Tao, AU - Gu,Jiao-Feng, AU - Zhou,Hang, AU - Gao,Zi-Xiang, AU - Liao,Bo-Han, PY - 2018/7/3/entrez PY - 2018/7/3/pubmed PY - 2018/11/21/medline KW - cadmium pollution KW - combined amendment KW - in-situ remediation KW - rice KW - translocation factors SP - 2546 EP - 2552 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 38 IS - 6 N2 - An in-situ paddy experiment was conducted to study the remedying effects of a combined amendment(calcium carbonate+diatomite+ferric sulfate) on Cd bioavailability in soil and Cd accumulation in rice for spring and autumn rice planted in a certain Cd contaminated paddy soil in Beishan Town, Changsha, Hunan Province. The results showed that:Application of the combined amendment significantly increased soil pH and CEC values in both cultivated seasons, but decreased soil OM contents for the spring rice. During the experiment, the contents of TCLP-extractable Cd and CaCl2-extractable Cd in soil were reduced by 18.0%-33.0% and 5.4%-57.9%, respectively. The Cd contents in brown rice, husk, leave and root for the spring rice decreased by 29.6%-56.1%, 52.1%-54.0%, 18.1%-80.7% and 24.4%-41.6%, respectively, due to application of the combined amendment. There were significant differences in Cd transport capacity between spring rice and autumn rice, and the transportation of soil Cd in autumn rice was smoother than that in spring rice. For the autumn rice, the effects of the combined amendment were not significant(P>0.05), except that the Cd content in husk increased a little after applying 2 g·kg-1 of the combined amendment. Significant positive correlations were found between the Cd contents in brown rice and the contents of TCLP-extractable Cd or CaCl2-extractable Cd in soil. Application of the combined amendment effectively inhibited Cd uptake by rice root and reduced Cd content in brown rice for the spring rice; however, these remedying effects were significantly weakened for the autumn rice due to loss of the combined amendment with the movement of irrigation water in the spring season. Therefore, we suggest that supplement of the combined amendment is necessary between two rice cultivated seasons. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/29965376/[Remedying_Effects_of_a_Combined_Amendment_for_Paddy_Soil_Polluted_with_Cd_for_Spring_and_Autumn_Rice]_ DB - PRIME DP - Unbound Medicine ER -