水稻秸秆接力处理过程中的红外光谱研究

作物秸秆就地焚烧已经和正在引起严重的大气污染，土壤微生物对作物秸秆的较难分解是作物秸秆农业利用的主要限制因子之一。文章采用傅里叶红外光谱(FTIR)分析技术对水稻秸秆接力处理(化学水解—微生物培养)过程进行了研究，分析探讨了接力处理的化学机理。由红外光谱的分析可见，经过接力处理，水稻秸秆半纤维素和纤维素大大降低，C／N比也降低到适合微生物生长的范围，硅元素的含量也降低，水溶性的物质含量升高，其结果与化学分析的结果一致。文章提出的水稻秸秆接力处理方法能为作物秸秆的农业利用提供有效途径。

Studies on the Changes in Rice Straw Composition in Relay Treatment of Chemical-Microbial Process by FTIR Spectroscopy

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.