Effects of Biochar with Hole Application on Growth and Nutrient Uptake of Flue-cured Tobacco

doi:10.14088/j.cnki.issn0439-8114.2018.03.008

Abstract

Abstract: In order to explore the effects of biochar on tobacco production,the effects of rice straw biochar with hole application on growth and nutrient uptake of flue-cured tobacco was studied through the field experiment. Results showed that biochar could improve the growth of flue-cured tobacco and increase the biomass of tobacco plant. However,the growth of flue-cured tobacco was inhibited with a higher application amount of biochar. In the conditions of this experiment,the growth of flue-cured tobacco was best with the hole application amount of 0.2 kg per plant. The soil pH,cation exchange capacity（CEC）,organic matter,available phosphorus and available potassium increased with hole application of biochar. The content of soil available nitrogen showed a decreased trend with the increasing of the amount of biochar. The biochar with hole application could promote the absorption of potassium,and the content of potassium in root,stem and leaf of flue-cured tobacco all increased. The content of nitrogen in leaf showed a decreased trend with the higher application amount of 0.3 kg per plant. In conclusion,the biochar with hole application could promote the growth and nutrient uptake of flue-cured tobacco,and the application amount of 0.2 kg per plant was suitable.

Key words: biochar, hole application, flue-cured tobacco, growth, nutrient uptake

CLC Number:

S572

WANG Wei-min, ZHANG Bao-quan, CHENG Chang-he, PENG Dong, GU Jun-jie, GUO Xiang, JIANG Fang, CHEN Guo-quan, ZHAO An-min, SHEN Guo-ming, GAO Lin. Effects of Biochar with Hole Application on Growth and Nutrient Uptake of Flue-cured Tobacco[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(3): 32-35.

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