Effects of Exogenous Cadmium in Different Soil Type on Flue-cured Tobacco Biomass and Soil Biota Indexes

doi:10.7668/hbnxb.2014.S1.034

Abstract

Abstract: Pot experiment was conducted to study the effect of exogenous cadmium on flue-cured tobacco biomass and soil biota indexes in different soil.The results showed that there was significantly relation between the dose of exogenous cadmium and tobacco biomass,microbe quantity and enzyme activity in rhizosphere soil.With the increasing of cadmium,the growth of tobacco was suppressed more seriously,and under the treatment of 6.0 mg/kg Cd,the dry weight was least,the inhibition of Cd was more seriously in red soil,especially.Moreover,it was found that inhibition of cadmium on quantity was in the order of actinomycete>fungi>bacteria,the effect on enzyme activity was in the order of urease>invertase>acid phosphatase,the effect on enzyme activity was in the order of acid phosphatase>invertase>urease.

Key words: Flue-cured tobacco, Cadmium, Biomass, Rhizosphere soil, Microorganism, Enzyme activity

CLC Number:

S572.06
S154

XU Zhao-li, DUAN Yu-qi, YANG Yu-hong, JIN Yan. Effects of Exogenous Cadmium in Different Soil Type on Flue-cured Tobacco Biomass and Soil Biota Indexes[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(S1): 176-182. doi: 10.7668/hbnxb.2014.S1.034.

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