Effects of Soil Microbial Biomass Carbon and Dehydrogenase Activity in Greenhouse Soil to Cd-PAEs

doi:10.7668/hbnxb.2017.02.034

Abstract

Abstract: A pot experiment was conducted to study the effect of response of microbial biomass carbon and soil dehydrogenase activity facilities on Cd-PAEs composite pollution. In order to reveal the greenhouse soil Cd and PAEs combined pollution effect,through pot experiment to verify the response of microbial biomass carbon and soil dehydrogenase activity facilities on Cd-PAEs composite pollution.Results showed that the soil microbial biomass carbon content increased by 42.7% and 96.5%,respectively,when the application of low concentration Cd (≤ 2.0 mg/kg).The application of PAEs (40,80 mg/kg)20 d after transplanting reduced the soil biological carbon content by 56.2% and 46.7%.At 30 days after transplanting,PAEs (40,80 mg/kg)30 d after transplanting decreased the total biomass carbon in the field by 39.8% and 21.6%.Cd treatment reduced the dehydrogenase activity in the soil,but did not change the dehydrogenase activity significantly.The application of high concentration of PAEs (80 mg/kg)increased the dehydrogenase activity of field soil by 33.6%,but decreased the soil dehydrogenase activity by 40.0%.There was a synergistic inhibition effect between Cd and PAEs on soil micro-biomass C,but an antagonistic effect on the dehydrogenase activity.

Key words: Phthalic acid ester (PAEs), Cadmium (Cd), Microbial biomass carbon, Dehydrogenase activity, Combined pollution

CLC Number:

X154.3

ZHAO Hui, WANG Linlin, SONG Ningning, WANG Fangli, LIU Jun, WANG Kairong, SHI Yanxi. Effects of Soil Microbial Biomass Carbon and Dehydrogenase Activity in Greenhouse Soil to Cd-PAEs[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(2): 232-238. doi: 10.7668/hbnxb.2017.02.034.

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