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[Effects of Water Management on Cadmium Accumulation by Rice (Oryza sativa L.) Growing in Typical Paddy Soil].
Huan Jing Ke Xue. 2021 May 08; 42(5):2512-2521.HJ

Abstract

In order to explore the effects of water management on the Cd accumulation of rice in paddy soils with different parent materials, a pot experiment with three paddy soils with different parent materials from Hunan Province (granite sandy soil, plate shale soil, and purple sandy shale soil) with different water management treatments [flooding and alternate wetting and drying (AWD)] was performed. The soil pH, DTPA-Cd, Fe plaque in the rice roots, and heavy metal concentration in the rice were determined. The results showed that the soil pH of the three paddy soils under the flooding treatment was increased by 0.17-1.33 units. During the filling and maturity periods, compared with that under AWD, the DTPA-Cd concentration in the three paddy soils was reduced by 14.39%-36.56% under the flooding treatment, but the DTPA-Fe concentration was increased by 35.35%-347.25%. In the three growth stages, the Cd and Mn concentrations in the Fe plaque (except for DCB-Fe) were in the order of tillering stage < filling stage < mature stage. Compared with that under AWD, the brown rice Cd concentration in the three soils was reduced by 57.84%-93.79% under flooding treatment. The Cd accumulation in rice was reduced under flooding treatment by reducing the DTPA-Cd via increasing the soil pH and DTPA-Fe and by decreasing the formation of Fe plaque. According to the results of the correlation and SEM analysis, the soil pH and DCB-Cd were the main factors affecting the Cd accumulation in rice grains, although the changes in the DTPA-Cd and DTPA-Fe also impacted the Cd in rice grains. In summary, our study demonstrated that water management had a significant impact on the Cd content in rice, and there were significant differences among the three paddy soils with different parent materials. In conclusion, the Cd content in rice grains was affected by the soil parent material, soil physicochemical properties, and Fe plaque on the surface of the rice roots. The granite sandy soil and plate shale soil with different water management treatments had significant impacts on the contents of heavy metals in rice. Continuous flooding is a valuable strategy for improving soil acidity and alkalinity and minimizing soil available Cd, but the soil parent materials must be considered.

Authors+Show Affiliations

College of Agronomy, Yangtze University, Jingzhou 434025, China. Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.College of Agronomy, Yangtze University, Jingzhou 434025, China.Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China.

Pub Type(s)

Journal Article

Language

chi

PubMed ID

33884822

Citation

Zhang, Yu-Ting, et al. "[Effects of Water Management On Cadmium Accumulation By Rice (Oryza Sativa L.) Growing in Typical Paddy Soil]." Huan Jing Ke Xue= Huanjing Kexue, vol. 42, no. 5, 2021, pp. 2512-2521.
Zhang YT, Tian YB, Huang DY, et al. [Effects of Water Management on Cadmium Accumulation by Rice (Oryza sativa L.) Growing in Typical Paddy Soil]. Huan Jing Ke Xue. 2021;42(5):2512-2521.
Zhang, Y. T., Tian, Y. B., Huang, D. Y., Zhang, Q., Xu, C., Zhu, H. H., & Zhu, Q. H. (2021). [Effects of Water Management on Cadmium Accumulation by Rice (Oryza sativa L.) Growing in Typical Paddy Soil]. Huan Jing Ke Xue= Huanjing Kexue, 42(5), 2512-2521. https://doi.org/10.13227/j.hjkx.202008305
Zhang YT, et al. [Effects of Water Management On Cadmium Accumulation By Rice (Oryza Sativa L.) Growing in Typical Paddy Soil]. Huan Jing Ke Xue. 2021 May 8;42(5):2512-2521. PubMed PMID: 33884822.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Effects of Water Management on Cadmium Accumulation by Rice (Oryza sativa L.) Growing in Typical Paddy Soil]. AU - Zhang,Yu-Ting, AU - Tian,Ying-Bing, AU - Huang,Dao-You, AU - Zhang,Quan, AU - Xu,Chao, AU - Zhu,Han-Hua, AU - Zhu,Qi-Hong, PY - 2021/4/22/entrez PY - 2021/4/23/pubmed PY - 2021/4/24/medline KW - cadmium KW - iron plaque KW - parent material KW - rice KW - water management SP - 2512 EP - 2521 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 42 IS - 5 N2 - In order to explore the effects of water management on the Cd accumulation of rice in paddy soils with different parent materials, a pot experiment with three paddy soils with different parent materials from Hunan Province (granite sandy soil, plate shale soil, and purple sandy shale soil) with different water management treatments [flooding and alternate wetting and drying (AWD)] was performed. The soil pH, DTPA-Cd, Fe plaque in the rice roots, and heavy metal concentration in the rice were determined. The results showed that the soil pH of the three paddy soils under the flooding treatment was increased by 0.17-1.33 units. During the filling and maturity periods, compared with that under AWD, the DTPA-Cd concentration in the three paddy soils was reduced by 14.39%-36.56% under the flooding treatment, but the DTPA-Fe concentration was increased by 35.35%-347.25%. In the three growth stages, the Cd and Mn concentrations in the Fe plaque (except for DCB-Fe) were in the order of tillering stage < filling stage < mature stage. Compared with that under AWD, the brown rice Cd concentration in the three soils was reduced by 57.84%-93.79% under flooding treatment. The Cd accumulation in rice was reduced under flooding treatment by reducing the DTPA-Cd via increasing the soil pH and DTPA-Fe and by decreasing the formation of Fe plaque. According to the results of the correlation and SEM analysis, the soil pH and DCB-Cd were the main factors affecting the Cd accumulation in rice grains, although the changes in the DTPA-Cd and DTPA-Fe also impacted the Cd in rice grains. In summary, our study demonstrated that water management had a significant impact on the Cd content in rice, and there were significant differences among the three paddy soils with different parent materials. In conclusion, the Cd content in rice grains was affected by the soil parent material, soil physicochemical properties, and Fe plaque on the surface of the rice roots. The granite sandy soil and plate shale soil with different water management treatments had significant impacts on the contents of heavy metals in rice. Continuous flooding is a valuable strategy for improving soil acidity and alkalinity and minimizing soil available Cd, but the soil parent materials must be considered. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/33884822/[Effects_of_Water_Management_on_Cadmium_Accumulation_by_Rice__Oryza_sativa_L___Growing_in_Typical_Paddy_Soil]_ DB - PRIME DP - Unbound Medicine ER -
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