论文部分内容阅读
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。30 d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。
Weathered coal is rich in humic acid, so far it has not been effectively exploited. In this study, humus activation technology and bio-fermentation technology were combined to study the conversion characteristics of humic acid and nitrogen and phosphorus in the fermentation process. Humic acid fertilizer for agricultural production. The results show that most of the humic acid is converted to water-soluble state after treated with ammonium bicarbonate and ammonium phosphate, and the content of water-soluble humic acid is 51% -60%. Most of nitrogen and phosphorus nutrients in the activated material are water-soluble. In the process of fermentation, a large amount of nitrogen and phosphorus were utilized by the microorganisms, and the proportion of nitrogen and phosphorus in the microbial biomass to water-soluble nitrogen and phosphorus was the highest at the end of the cultivation, reaching 52.42% and 73.74% respectively, indicating that about half of the water-soluble nitrogen and most of the water- As microbial nitrogen and phosphorus. Nearly 3% of nitrogen and 15% of phosphorus were microbiologically recycled during 30 days of cultivation. Thus, a large part of the inorganic nitrogen and phosphorus nutrients added into the weathered coal is converted into microbial nitrogen and phosphorus, and a considerable part of the conversion of microbial biomass, the fermentation products in line with organic agriculture production requirements.