CAJ | 학술논문

　　沼肥中的重金属主要来自于动物饲养中微量元素添加剂和农业种植中农药、化肥的过度使用。短期施用沼肥对土壤中的重金属含量没有显著影响，这里由于沼肥中有机物官能团和微生物对重金属的吸附净化作用降低了土壤中重金属的活性，减少了植物对重金属离子的吸收。为此，结合重金属的来源分析，从产前、产中、产后3方面阐述了减轻沼肥中重金属危害的措施及建议，并结合现代生物技术的新成果，对利用沼肥中微生物和有机官能团对重金属进行吸附净化做出展望。
　　소비중적중금속주요래자우동물사양중미량원소첨가제화농업충식중농약、화비적과도사용。단기시용소비대토양중적중금속함량몰유현저영향，저리유우소비중유궤물관능단화미생물대중금속적흡부정화작용강저료토양중중금속적활성，감소료식물대중금속리자적흡수。위차，결합중금속적래원분석，종산전、산중、산후3방면천술료감경소비중중금속위해적조시급건의，병결합현대생물기술적신성과，대이용소비중미생물화유궤관능단대중금속진행흡부정화주출전망。
The heavy metals in biogas fertilizer mainly has two major sources , the trace elements additives in animals feeding and the overuse of chemical fertilizer in agricultural planting .Short-term application of the biogas fertilizer has no significant impact on the content of the heavy metals in the soil .Because of the absorption and purification of the organic functional groups and microorganism , the activity of heavy metals decreased , and the absorption of plants to heavy metal ions also reduced.Combining with the analysis about the source of heavy metals , we offer some proposal and methods in the preproduction process , production process and postproduction process .At the same time, we make an expectation for the using of microorganism and functional groups in heavy metals cleansing,based on the new achievements of modern biological technology.