【摘要】 采用恒温培养试验 ,利用植物化学组成系统分析法 ,对玉米秸秆腐解过程物质组成的动态变化进行了研究。结果表明 ,随腐解进行 ,腐解物中木质素、全氮以及灰分的含量逐渐增加 ;水溶性物质的含量在 2 1 0 d以前逐渐减小 ,2 1 0 d以后也有所增加 ;苯醇溶性物质、纤维素和全碳的含量逐渐减小。腐解过程木质素、纤维素、全碳的总量均呈下降趋势 ,其分解率与腐解时间的关系可用指数方程来描述。同一腐解期 ,分解率的大小顺序是纤维素 >全碳>木质素。腐解过程灰分的总量基本不变 ,全氮量略有减小更多还原

【Abstract】 The method of system analysis of plant chemical composition was used for studying the change of chemical composition of corn straw which was incubated at the temperature of 25℃. The results showed that as the decomposition time going on, the content of lignin, total N and ash in decomposed materials increased, while the content of benzene alcohol soluble fraction, cellulose and total C was on the contrary. The content of water/soluble fraction kept on decreasing before 210th day and then began to rise. As the corn straw decomposed, the amount of lignin, total N and total C decreased. The relationship between decomposition rate and decaying time could be described by index equation. At the same time, the order of the decomposition rate was cellulose>total C>lignin. During the decomposing period, the amount of ash kept stable and the total N decreased slightly.\;更多还原