Analysis on Fertilizer Efficiency and Microbial Diversity of Compost with Bacterium Agent

doi:10.11924/j.issn.1000-6850.casb14100027

Abstract

Abstract: In order to accelerate agriculture and animal waste transform into organic fertilizer to increase soil fertility, a stable cellulose decomposing bacterial community was screened out which could decompose 36% of rice straw within 14 days. Many kinds of volatile products (L-lactic acid, formic acid, acetic acid and propionic acid) were detected by GCMS, most of them were advantageous to increase soil organic matter. In the northeast of China, two composts were piled up and the bacteria agent was added to only one of the composts. We found that the highest temperature was 63.0℃, temperature over 55.0℃ maintained for 7 days in compost added with bacteria agent. In addition, time of thoroughly decomposition of the compost added with bacteria agent was 17 days shorter than the compost without bacteria agent. After piled for 57 days, in compost with and without bacteria agent, the soluble sugar was 11.80 and 8.92 mg/L, respectively, and C/N was 12.65 and 13.69, respectively. The 454 pyrosequencing technology was used to survey the whole bacterial community. The predominant strains belonged to three genera: Bacteroides sp., Firmicutes sp. and Clostridium sp.. But the bacterial diversity was much abundant of the added with bacteria agent. The resulted showed that the compost added with bacteria agent can not only cut down organic fertilizer’s stacking time but also increase its fertilizer efficiency.

Liu Changli,Li Na,Wang Baoxin,Li Chunling and Qi Yingjie. Analysis on Fertilizer Efficiency and Microbial Diversity of Compost with Bacterium Agent[J]. Chinese Agricultural Science Bulletin, 2015, 31(8): 145-153.

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