›› 2016, Vol. 28 ›› Issue (10): 1745-1754.DOI: 10.3969/j.issn.1004-1524.2016.10.17

• Environmental Science • Previous Articles     Next Articles

Effect of biochar on carbon and nitrogen content of albic soil

DAI Lin, NIE Ying, FENG Lu, XU Mao-mao, DING Yi-jun, XU Hong-tao, WANG Hong-yan*   

  1. College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
  • Received:2016-03-16 Online:2016-10-15 Published:2016-11-20

Abstract: In the present study, the effect of different biochar application rate (0,10,20,30 t·hm-2) on soil carbon and nitrogen content was explored via field test. It was shown that application of biochar increased contents of soil organic matter (SOM), total nitrogen (TN), microbial biomass carbon (MB-C), microbial biomass N (MB-N), nitrate (NO3--N) and ammonium (NH4+-N), and the more application, the higher the contents. Compared with CK, SOM, TN, MB-C, MB-N content was increased by 6.88%-43.77%, 1.68%-15.91%, 9.76%-60.88%, 6.72%-68.91%, respectively. The highest contents for above indexes were all reached at the highest biochar application rate. Application of biochar significantly increased NH4+-N and NO3--N content in every soil depth, and showed an overall tendency of 0-10 cm>10-20 cm>20-30 cm. Thus, application of 30 t·hm-2 was recommended for albic soil.

Key words: biochar, albic soil, carbon, nitrogen

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