| 风化煤与玉米秸秆发酵过程中腐植酸及氮磷的变化 |
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| 引用本文： | 曹均,林启美,李旭,赵小蓉,李贵桐,孙明德,曹庆昌.风化煤与玉米秸秆发酵过程中腐植酸及氮磷的变化[J].腐植酸,2009(3):18-23. |
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| 作者姓名： | 曹均 林启美 李旭 赵小蓉 李贵桐 孙明德 曹庆昌 |
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| 作者单位： | 1. 北京市农林科学院农业综合发展研究所,北京,100097
2. 中国农业大学资源与环境学院,北京,100094 |
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| 摘 要： | 风化煤富含腐植酸，目前还没有有效地开发利用，本研究将风化煤腐植酸活化技术与生物发酵技术相结合，研究了解发酵过程中腐植酸及氮磷养分的转化特点，试图开发适合有机农业生产的腐植酸肥料。研究结果表明，风化煤经过碳酸氢铵和磷酸铵处理后，大部分腐植酸转化为水溶性状态，水溶性腐植酸含量51％～60％；活化材料中的氮磷养分大部分为水溶性。发酵过程中微生物利用了大量的氮磷养分，微生物量氮磷占水溶性氮磷的比例在培养结束时最高，分别达到52．42％和73．74％，说明一半左右的水溶性氮和大部分水溶性磷素为微生物量氮磷。30d培养期间，接近3％的氮素和15％的磷素经过了微生物量循环。由此可见，风化煤活化时所加入的无机氮磷养分很大一部分转化为微生物量氮磷，并有可观的一部分经过了微生物量的转化，发酵产物符合有机农业的生产要求。
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| 关 键 词： | 风化煤 玉米秸秆 腐植酸 微生物量氮磷 |
Changes of Humic Acid,N and P During Incubation of Leonardite with Maize Straw |
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| Authors: | Cao Jun Lin Qimei Li Xu Zhao Xiaorong Li Guitong Sun Mingde Cao Qingchang |
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| Affiliation: | Cao Jun~1,Lin Qimei~2,Li Xu~2,Zhao Xiaorong~2,Li Guitong~2,Sun Mingde~1,Cao Qingchang~1 (1 Institute of Integrated Agricultural Development,Beijing Academy of Agricultural and Forestry Science,Beijing,100097 2 College of Resource and Environment,China Agricultural University,100094) |
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| Abstract: | Leonardite is full of humic acid,but not be effectively utilized by now.With Combination of activation technique of leonardite and microbiological fermentation,the dynamics of humic acids,nitrogen and phosphorus during fermentation were investigated.The object is to supply data for producing humic fertilizer used in organic farming.The results showed that a large portion of humic acids in leonardite was transferred into water soluble status when it was treated with ammonium carbonate and ammonium phosphate,... |
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| Keywords: | leonardite maize straw humic acid microbial biomass N and P |
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