农业资源与环境学报Issue(1)：50-55,6.DOI:10.13254/j.jare.2013.0149
养猪舍不同发酵床垫料重金属Zn累积特征初探
Primary Research on Characteristics of Zinc Accumulation of Different Pig-on-litters
摘要
Abstract
In order to study zinc accumulation and activity in different fermentation mattresses and topsoil, three combinations of fermentation beds were selected:40%rice husk+60%mushroom bran(FJ)、40%rice husk+60%sawdust(FD)、40%rice husk+60%vinasse(FW),to save economic costs and be suitable for pig growth. Two methods named material flow analysis(MFA)and potential ecological risk assess-ment were used in this study. The results showed that, after one breeding cycle, the combination of FD had stronger ability to absorb heavy mental Zn;different litters had different effects on the activity of available Zn, thus in the litter of FD, the Zn activity was significantly higher than the other two, the proportion as high as 25.01%, followed by the FJ>FW(P<0.05). To the contrary, there were no significant impacts on available Zn activity(P>0.05)in different topsoil. In the selected three litters, the absorptive capacity for Zn of FJ was smallest;meanwhile, the total Zn leaked into topsoil and the effective activity of Zn had no significant differences from FD and FW. However, its potential ecologi-cal risk was minimization. For the reason to reduce Zn contamination, the litter of FJ was better than the other two. After analysis of ecological risk assessment, the potential ecological risk of these three litters didn’t exceed the minimal ecological risk threshold (Eir≤40). The useful life of the fermentation bed should be about ten years in the premise of constantly replenished litter.关键词
发酵床垫料/重金属Zn累积/有效态重金属/潜在生态危害评价/物质流分析Key words
fermentation bed litter/Zn accumulation/available heavy metals/potential ecological risk/material flow analysis(MFA)分类
资源环境引用本文复制引用
张丽萍,盛婧,孙国锋,郑建初..养猪舍不同发酵床垫料重金属Zn累积特征初探[J].农业资源与环境学报,2014,(1):50-55,6.基金项目
集约化农区种养结合生产技术集成与工程示范 （）
