摘要
浙江省61个具有代表性的复混肥料、有机-无机复混肥料和有机肥料产品的养分含量、物理性状及重金属含量的检测结果表明,浙江省复混肥料、有机-无机复混肥料、有机肥料的养分含量和物理性状总体较好。三类肥料的养分含量合格率分别为:有机肥料95.0%、有机-无机复混肥料72.2%、复混肥料86.3%。从三类肥料的重金属含量的检测情况看,有机肥料中的铜、锌、铅、镉、铬含量均高于有机-无机复混肥料和复混肥料,而且高含量段的分布频率也大。按相应标准判定,有机肥料中35%的样品镉含量超过限量标准,10%的样品铅含量超过限量标准,所有样品的铬含量均在限量标准内;有机-无机复混肥料样品中三种重金属元素均在限量标准内。对有机肥料中的有机肥肥源的重金属含量检测结果表明,有机肥料与其相应的有机肥源中的铜、锌、铅、镉、铬等五种重金属元素的含量均呈显著正相关。
An investigation was carried out on the physical and nutritional quality of fertilizers in Zhejiang province. Analysis results of 61 samples collected from domestic compound fertilizers, organic-inorganic compound fertilizers and organic fertilizers showed that majority of the samples met the relevant standards listing criteria. For the criteria for nutrient of these fertilizers was 95.0 % for organic fertilizers, 72.2 % for organic-inorganic compound fertilizers, and 86.3 % compound organic fertilizers. Heavy metals were also tested. The results showed that Cu, Zn, Pb, Cr and Cd contents were highest in organic fertilizers followed by organic-inorganic compound fertilizers. Cd and Pb contents of organic fertilizer samples was 35% and 10% higher than the upper limitation of national standard respectively, while Pb, Cd and Cr in all organic-inorganic compound fertilizers samples measured under the national standard. The contents of heavy metals in commercial organic fertilizers were significantly correlated with that in the raw organic materials.
出处
《植物营养与肥料学报》
CAS
CSCD
北大核心
2007年第1期148-154,共7页
Journal of Plant Nutrition and Fertilizers
关键词
肥料
品质
重金属
fertilizer
quality
heavy metals
