Effect of Water Holding Capacity on Sulfur, Cadmium and Arsenic Uptake by Rice

  • Lei Shi,Xuexia. Zhang

Abstract

Soil potentially toxic elements contamination have been one of the most challenging pollution problems, such as cadmium (Cd) and arsenic (As). To understand the effects of 60%, 80%, and 100% of maximum holding water capacity (MHW), conventional irrigation and flooding during the whole growth stages on the polymetallic sulphides mining paddy soil Cd and As, a pot experiment was studied. Soil pH increased with increasing soil moisture content, while soil sulfur (S) and available S gradually decreased. The Cd content in rice organs decreased gradually with increasing soil holding water capacity, whereas As contents increased significantly. Compared with conventional irrigation treatment, brown rice Cd contents increased by 95.0% and 22.5% under 80% MHW and 100% MHW treatments, and As reduced by 66.3% and 32.5%, respectively. The rice grain Cd content reduced significantly by 26.0% under Flooding during the whole growth stages treatment reduced, whereas As content increased by 104.9%. Principal component analysis (PCA) showed that there was a positive correlation between soil S and brown rice Cd content, but negative correlation with brown rice As.

How to Cite
Lei Shi,Xuexia. Zhang. (1). Effect of Water Holding Capacity on Sulfur, Cadmium and Arsenic Uptake by Rice. Forest Chemicals Review, 2613-2620. Retrieved from http://forestchemicalsreview.com/index.php/JFCR/article/view/1261
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Articles