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[Studies on the changes in rice straw composition in relay treatment of chemical-microbial process by FTIR
Yong Xu1, Qi-rong Shen, Zeng-tao Zhong
1College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
Abstract:
Direct burning of crop straw in the field has given or is giving rise to a serious pollution of atmosphere. The difficult decomposing of the crop straw by soil microorganisms is one of the reasons the crop straw is not popularly used in agriculture. Fourier transform infrared spectroscopy (FTIR) was used to study the changes in straw composition during the relay treatment of chemical-microbial process. The results showed that the method of FTIR spectra could indicate the changes in straw composition during the treatment processes. After the relay treatment of chemical-microbial process, the contents of cellulose, semi-cellulose, and silicon, and C/N ratio were decreased significantly, while the water soluble substances were increased, which was in accordance with the results of chemical analysis. The method to treat crop straw proposed in this paper could provide a practicable way in agricultural utilization of crop straw.
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