【摘要】：好氧堆肥是一種有效處理農(nóng)業(yè)廢棄物的方法,有利于實(shí)現(xiàn)農(nóng)業(yè)資源的循環(huán)利用。但堆肥也有它的缺點(diǎn),堆肥過(guò)程中的碳素?fù)p失是造成溫室氣體形成的重要原因。因此研究碳素在堆肥過(guò)程中的轉(zhuǎn)化規(guī)律對(duì)于如何減少堆肥潛在的負(fù)面環(huán)境影響十分重要。該研究以生豬養(yǎng)殖發(fā)酵床廢棄墊料及秀珍菇菌渣為原料,利用強(qiáng)制通風(fēng)靜態(tài)堆肥技術(shù)研究墊料和菌渣不同配比及添加EM菌劑對(duì)堆肥過(guò)程碳素物質(zhì)轉(zhuǎn)化的影響。結(jié)果表明,堆肥過(guò)程中總有機(jī)碳呈逐漸下降趨勢(shì);胡敏酸呈逐漸增加的趨勢(shì);微生物量碳和可溶性碳呈先增后降的變化趨勢(shì)。堆肥結(jié)束時(shí),碳素降解率為5.7%~10.2%,胡敏酸增加了56.0%~131.0%,可溶性有機(jī)碳增加了54.5%~81.5%,微生物生物量碳增加了31.7%~73.4%。以墊料為主料的堆肥處理碳素?fù)p失高于以菌渣為主料的處理,添加EM菌劑可以加速有機(jī)質(zhì)的礦化分解和提高腐殖質(zhì)化指數(shù)。
[Abstract]:Aerobic composting is an effective method for the treatment of agricultural waste, which is helpful to realize the recycling of agricultural resources. However, composting also has its disadvantages, the carbon loss in composting process is an important cause of greenhouse gas formation. Therefore, it is very important to study the transformation of carbon in composting process in order to reduce the potential negative environmental impact of compost. In this study, the effects of different ratios of gasket and bacteria residue on carbon conversion during composting process were studied by using static composting technology of forced ventilation using waste bedding and mushroom residue of pig culture fermentation bed as raw materials. The effects of different ratios of gasket and bacteria residue and the addition of EM bacteria agent on carbon conversion in composting process were studied by using static composting technology of forced ventilation. The results showed that total organic carbon decreased gradually, Hu Min acid increased gradually and microbial biomass carbon and soluble carbon increased first and then decreased during composting. At the end of composting, the degradation rate of carbon was 5.7 and 10.2, Hu Min acid increased 56.0 and 131.0, soluble organic carbon increased 54.5 and 81.5, microbial biomass carbon increased 31.73.4. The carbon loss of compost treated with bedding as main material was higher than that with bacteria residue. Adding EM bacteria agent could accelerate the mineralization decomposition of organic matter and increase the humus index.
【作者單位】： 福建省農(nóng)業(yè)科學(xué)院農(nóng)業(yè)生態(tài)研究所福建省丘陵地區(qū)循環(huán)農(nóng)業(yè)工程技術(shù)研究中心;
【基金】：國(guó)家科技支撐計(jì)劃課題(2012BAD14B15)
【分類(lèi)號(hào)】：S141.4

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