摘要
蔬菜废弃物营养丰富、产量大,但直接利用效率不高。水热处理技术可实现其减量化资源化循环利用,大大降低其环境应用风险。以经过180、210、240℃不同温度处理的蔬菜废弃物水热产物作为有机改良肥,对土壤进行为期35d的盆栽试验,结果表明:随着培养时间的延长,土壤pH值变化微小,而EC值不断增大,可达0.833 mS/cm;有机质含量先升后降,最大值为10.30 g/kg;氮磷钾养分含量逐渐升高,总养分最高达3.43%;土壤微生物以变形杆菌门和厚壁菌门等有益菌为主。蔬菜废弃物经过高温水热处理后生成的固态产物可作农肥使用,对碱性土壤具有较好的改良特性,最适宜处理温度为210℃。
Vegetable waste is rich in nutrition and large in yield,but the direct utilization efficiency is not high.Hydrothermal treatment technology can realize its reduction,resource utilization,and recycling,thereby greatly reducing its environmental application risk.The hydrothermal products of vegetable waste treated at 180,210 and 240℃were used as organic improvement fertilizer to conduct a pot experiment on the soil for 35 d.The results showed that the soil pH value changed slightly with the extension of culture time,but the EC value increased to 0.833 mS/cm;the organic matter content rose first and then decreased,with the maximum value being 10.30 g/kg;the content of nitrogen,phosphorus,and potassium was gradually increased,with the total nutrient content reaching up to 3.43%;the soil microorganisms were mainly beneficial bacteria such as Proteobacteria and Firmicutes.The solid by-products produced by high temperature hydrothermal treatment of vegetable waste can serve as an agricultural fertilizer,exhibiting good characteristics for improving alkaline soil.The optimum temperature required for this process was 210℃.
作者
许传阳
杨英
许晴
唐建恒
高志鑫
齐明
XU Chuan-yang;YANG Ying;XU Qing;TANG Jian-heng;GAO Zhi-xin;QI Ming(School of Business Administration,Henan Polytechnic University,Jiaozuo 454003,PRC;School of Resources and Environment,Henan Polytechnic University,Jiaozuo 454003,PRC)
出处
《湖南农业科学》
2024年第6期38-43,47,共7页
Hunan Agricultural Sciences
基金
河南省科技攻关项目(232102321049)。
关键词
蔬菜废弃物
水热产物
土壤肥力
资源化利用
vegetable waste
hydrothermal products
soil fertility
resource utilization
