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Effects of Biochar on Soil Microbial Biomass after Four Years of Consecutive Application in the North China Plain
- Qing-zhong Zhang,
- Feike A. Dijkstra,
- Xing-ren Liu,
- Yi-ding Wang,
- Jian Huang,
- Ning Lu
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- Published: July 15, 2014
- https://doi.org/10.1371/journal.pone.0102062