生物炭复合菌剂促进堆肥腐熟及氮磷保留

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Abstract In order to reduce nitrogen loss and increase phosphorus availability, a set of manure composting experiments, control treatment (CK), biochar (B), microbial solution (M), and biochar combined with microbial solution (BM), were conducted to study their effects on compost maturity and N and P conservation. The results showed that all four treatments satisfied the required sanitation standards of the manure compost. The accumulated emission amount of NH₃ and N₂O in treatment BM were 2.36 and 0.93g, respectively, which were significantly lower than that in CK (8.01 and 1.31g). In addition, the total N content was 23.78g/kg in treatment BM, which was significantly higher than that in CK (18.36g/kg). The TP contents in treatments of CK, B, M, and BM at the end of composting were 16.41, 17.16, 18.51, and 19.16g/kg, respectively. Moreover, the OP content was increased by 77.60% in BM, which was significantly higher than that in CK (50.66%). After composting, the P availability increased especially for the treatments of M and BM, and the sequence of the total proportion of moderately available P and easily available P was in the order of: BM (42.94%) > M (39.80%) > B (37.29%) > CK (31.51%). This study showed biochar combined with microbial solution additions could have great effects on improving compost maturity, N and P conservation.

Key words： biochar microbial solution compost nitrogen phosphorus

Received: 07 January 2020

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X705

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	Articles by authors
	LI Rong-hua
	TU Zhi-neng
	Ali Amjad
	JIN Xin-di
	LI Song-ling
	ZHAO Xu-bo

Cite this article:

LI Rong-hua,TU Zhi-neng,Ali Amjad等. Biochar carried microbial solution promotes compost maturity and nitrogen, phosphorus conservation[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(8): 3449-3457.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I8/3449

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