Effect of Soil Salt on Enzyme Activities and Cd Forms

doi:10.11924/j.issn.1000-6850.casb15070170

Abstract

Abstract: In order to study the physiological change of rice and soil enzyme activity and cadmium (Cd) forms under cadmium pollution and salt stress, enzyme activities (soil and plant) and soil Cd form transformation were studied by pot experiment under different salt stress. The results showed that the urease and alkaline phosphatase activity increased by 2.1%-19.5% and 3.8%-64.3% when the salt content increased from 0.3% to 0.5% under the same Cd contamination level. When the soil salt content was higher than 0.5% , the rice seedlings withered. The catalase activity and malondialdehyde content increased with the increase of salt and Cd content. The Cd forms and distribution changed with the change of salt content, the ratios of exchange and square Cd increased with the increase of salt content, the exchange forms and reduction forms of Cd increased with higher salt stress. It indicated that the soil and rice enzyme activities were affected by multi-factors in Cd polluted saline-alkali soil. The synergistic effects appeared on soil and rice with salt and Cd contamination.

CLC Number:

Cui Liqiang,Yan Jinlong,Ding Cheng,Chen Tianming and Chen Wei. Effect of Soil Salt on Enzyme Activities and Cd Forms[J]. Chinese Agricultural Science Bulletin, 2016, 32(5): 83-89.

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