Ameliorating Effect of Biochar on Acidity of Tea Garden Soil

WU Zhi-dan; YOU Zhi-ming; JIANG Fu-ying; WANG Feng; WANG Cheng-ji; ZHANG Wen-jin

Volume 27 Issue 2

Mar. 2012

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Article Navigation > Fujian Journal of Agricultural Sciences > 2012 > 27(2): 167-172

WU Zhi-dan, YOU Zhi-ming, JIANG Fu-ying, WANG Feng, WANG Cheng-ji, ZHANG Wen-jin. Ameliorating Effect of Biochar on Acidity of Tea Garden Soil[J]. Fujian Journal of Agricultural Sciences, 2012, 27(2): 167-172.

Citation:

WU Zhi-dan, YOU Zhi-ming, JIANG Fu-ying, WANG Feng, WANG Cheng-ji, ZHANG Wen-jin. Ameliorating Effect of Biochar on Acidity of Tea Garden Soil[J]. Fujian Journal of Agricultural Sciences, 2012, 27(2): 167-172.

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Ameliorating Effect of Biochar on Acidity of Tea Garden Soil

1.
Tea Research Institute, Fujian Academy of Agricultural Sciences, Fu'an, Fujian 355015, China;
2.
Agriculture Ecology Institute, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350013, China

Received Date: 2012-01-11
Rev Recd Date: 2012-02-09
Publish Date: 2012-02-29

Abstract

Abstract

Ameliorating effect of biochar in varying concentrations (i.e., 0, 8, 16, 32 and 64 t hm-2) on acidity of tea garden soils were studied in field trials. The results showed that, as compared with CK (no added biochar), the soil pH increased by 0.19-1.72, the soil exchangeable acid decreased by 0.79-3.96 cmolkg-1, the soil base saturation increased by 20.98-173.67%, and the soil cation exchange capacity (CEC) increased by 0.80-2.46 cmolkg-1 on the 0-20 cm layer of the soils. On the other hand, in the 20-40 cm layer of the soils, the pH of the treatment samples increased by 0.05-0.61, the soil exchangeable acid decreased by 0.20-2.14 cmolkg-1,the soil base saturation increased by 27.72-56.51%, and the soil CEC increased by 0.57-1.12 cmolkg-1. It appeared that the soil ameliorating effect increased with increasing biochar addition. The increase was particularly significant in the 0-20 cm than the 20-40 cm layer of the soils. The yield of the fresh tea leaves was changed 6.61%, 5.62%, -0.11% and -0.77% by the addition of biochar at the rates of 8, 16, 32 and 64 thm-2, respectively. However, no significant differences (P0.05) on tea yields between the treatments and control was found.
- biochar,
- soil acidification,
- soil,
- soil amelioration

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References(17)

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