Effects of Biochar Application on Enzyme Activities in Tea Garden Soil.

With different proportions of biochars (0–2%) added, the urease activity in each growth period showed an increasing trend with the increase of biochar contents in soil.

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All the urease activities of soil samples with biochars added showed a trend of first increasing and then decreasing, while they had no significant difference in samples in December 2019.

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In the case of using biochars pyrolyzed under the same temperature, the phosphatase activity showed a decreasing trend as the amount of biochars increased.

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