Effect of Adding Biochar to Cd Contaminated Tobacco Soil on Flue-cured Tobacco Quality and Cd Content

doi:10.7668/hbnxb.2014.02.043

Abstract

Abstract: A pot experiment was conducted to study the growth of tobacco, quality and accumulation of Cd in tobacco leaves on Cd contaminated tobacco soil by adding different concentration biochar as the soil amendment. The results showed that adding biochar could promote the growth of tobacco in some sort, and the effect will be more significant with more biochar. Biochar application increased the contents of total sugar, N and K in tobacco leaves, however, it decreased the content of Cl. The content of nicotine in tobacco leaves increased firstly then decreased with the increase of biochar application rate in Cd₁ soil, however, it had an increasing trend in Cd₅ soil. The accumu- lation of Cd in tobacco leaves was decline by the application of biochar. Application 5 g/kg biochar on Cd₁ and Cd₅ soil decreased the Cd contents in leaves by 4. 40% and 6. 46%, respectively; Application 20 g/kg biochar on Cd₁ and Cd₅5soil decreased the Cd contents in leaves by 58. 47% and 41. 22%, respectively.

Key words: Tobacco, Biochar, Cd

CLC Number:

S572
X71

LI Ling, LIU Dong, L Yin-fei, REN Yan-fang, HE Jun-yu. Effect of Adding Biochar to Cd Contaminated Tobacco Soil on Flue-cured Tobacco Quality and Cd Content[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(2): 228-232. doi: 10.7668/hbnxb.2014.02.043.

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