【摘要】 通过大田试验研究施用漳州城市污泥堆肥对溪蜜柚产量、品质及蜜柚、叶片、土壤中重金属含量的影响。结果表明,在常规施肥的基础上,施用污泥堆肥可显著提高蜜柚产量、改善蜜柚品质;施用污泥堆肥的蜜柚果肉中Hg、As、Pb、Cd、Cr重金属含量均低于GB2762—2005《食品中污染物限量》(水果)标准;蜜柚不同器官或组织的重金属含量有较大的差异,总体趋势为叶片>果皮>果肉,但铬含量为果肉>果皮;在保证污泥质量指标安全的前提下,长期施用漳州城市污泥堆肥是安全可靠的,不会对土壤环境产生污染。更多还原

【Abstract】 This article aims at introducing the author’s investigation of the effect of the application of urban sewage sludge to the Guanxi pomelo yield,and the quality as well as the heavy metal content in their leaf,fruit and soil through a series of field experiments.The results indicate that,in addition to the conventional fertilizers,the application of urban sewage sludge helps to increase fruit yield significantly as well as to improve the fruit quality.The contents of Hg,As,Pb,Cd and Cr in the flesh of the Guanxi pomelo prove lower than that stipulated in the national standard GB 2762—2005,Maximum Content of Contaminants in Food(Fruit),when the trees were applied the urban sludge.A further result has been given that the application of the sludge contribute to the improved cultivation of the fruit with its different organs or tissues.The order of the effect proves to be leaf > peel > flesh for Hg,As,Pb and Cd.But flesh contained more Cr than peel.However,it is necessary to monitor the heavy metal content and sanitary pathogen in sewage sludge regularly.Therefore,it can be concluded that long term application of the urban sewage sludge will be safe and secure for the pomelo growth both for its fruit quality and the quality of the soil.更多还原