| 摘要: |
| 用等容燃烧热(热值)表征植物残体腐解产物的能态,对大豆、玉米、油菜秸杆和小麦根茬腐解不同时期的腐解产物进行测定结果表明: (一)各植物残体腐解过程的能态在试验期间内都呈现出平缓变化和剧烈起伏变化两个阶段的共同动态变化规律。 (二)各植物残体腐解产物能态水平高低的总趋势为大豆>玉米>油菜>小麦。 (三)各植物残体腐解过程中,大豆秸杆有积能趋势,小麦根茬出现耗能趋势,玉米、油菜秸杆积能与耗能差异不明显。 (四)植物残体腐解产物能态高低特征与产物的全氮量、木质素含量呈正相关。 |
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| Research on the Changing Characteristics of Energetics of Decaying Process of Plant Residues |
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| Abstract: |
| Constant volume combustion heat (heat value) was used as the index of energetics of the decaying substances to determine the decaying substances of the stalks of soybeans, maize,rapeseed and wheat roots in the decaying process,and results obtained from the experiment showed: 1.The energetics of the decaying process of each plant appeared to have the same laws of dynamic changes of two major periods of the slightly changing stage and the drastically rolling stage during the experiment. 2.The general tendency of energetic level of the decaying substances of each plant is soybean>maize>rapeseed>wheat. 3.In the decaying process of the decaying substances of each plant,soybean stalks may have the tendency of accumulation of energetics,while wheat roots and residues may have the tendency of consumption of energetics,but there is no obvious difference of energy accumulation and consuption for maize and rapeseed stalks. 4.The characteristics of energetics of decaying substances of plant residues appear to be positive correlation with total nitrogen and amount of ligin in decaying substances. |
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