| 摘要: |
| 以养鸡场鸡粪、小麦秸秆为原料，在静态通气条件下，研究了堆腐过程有机物料微生物、胡敏酸E4/E6值、电导率及pH的变化。结果表明，加入微生物菌剂堆腐，细菌和放线菌数在堆腐第2天达到高峰，分别为2.51×1012和3.68×108 g-1，之后均缓慢下降，但放线菌数的变化较为平缓；真菌数在堆腐开始时较高(7.58×108 g-1), 之后随着堆体温度上升而下降，堆腐后期随温度下降而缓慢上升；整个堆腐过程中，真菌数一直较低，而细菌和放线菌数量相对较高。未加菌剂的堆腐处理，细菌数于第4天达到高峰值5.01×1010 g-1，放线菌数在第3天达到高峰值1.44×108 g-1，真菌数在第2天达到高峰值5.01×107 g-1。与对照相比，加入微生物菌剂堆腐的pH值相对较低，变化幅度较小；加入微生物菌剂堆腐处理的EC值较高，堆腐30 d后E4/E6值为1.57～1.68，而CK处理的E4/E6值为2.16～2.41，表明加入菌剂能促进腐殖质的缩合和芳构化。 |
| 关键词: 农业废弃物 堆腐 微生物 静态高温腐解 |
| DOI： |
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| 基金项目:科技部“农转资金”项目（03EFN21610230）；陕西省农业重点攻关项目（2003K02-G13-01） |
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| Changes of microorganisms and E4/E6 in agricultural waste materials during composting in static state with high temperature |
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| Abstract: |
| An experiment was conducted with mixed materials of chicken excrement and wheat straw to study the changes of microorganism population,E4/E6,election conductance rate (EC),and pH during an aeration composting process in a static state with high temperature.Results showed that,with addition of microorganism agent,a highest population number was found to be 2.51×1012 g-1 for bacteria and 3.68×108 g-1 for actinomyces in two days.The fungus numbered 7.58×108 g-1,relatively higher at the beginning of composting while decreased with temperature rise,and at late stage of composting with temperature decline,the population of fungi rose slowly.The number of fungi was low whereas that of bacteria and actinomyces was much higher.Without adding microorganism agent,the highest population was found to be 5.01×1010 g-1 for bacteria in four days and 1.44×108 g-1 for actinomyces in three days，and number of fungi number was 5.01×107 g-1 in two days.Applying microorganism agent could reduce pH,and increase EC at the same time.The E4/E6 was 1.57-1.68 with adding agent microorganism,and the E4/E6 of CK was 2.16-2.41 after 30 days,indicating that addition of microorganism agent could promote the process of humification. |
| Key words: agricultural waste compost microorganisms static state with high temperature |
