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Volume 27 Issue 2
Mar.  2012
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Article Contents
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.

Ameliorating Effect of Biochar on Acidity of Tea Garden Soil

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