摘要
用原子吸收光谱法和氢化物原子荧光法分别测定了海南垃圾肥中的重金属含量,试验结果表明:抽检的海南无公害生产示范基地土壤和果蔬重金属残留未超过国家标准,符合无公害生产要求,但垃圾肥中铝、镉、砷却严重超过了有关的国家标准。提出垃圾肥的不合理利用可能对海南生态环境造成二次污染危害的问题。经研究分析认为,垃圾肥肥力较高,合理开发利用可变废为宝,但是垃圾肥中重金属容易积累,应限制其使用范围。此类产品不宜在食用农产品,尤其是绿色食品生产中推广使用,比较适宜于林业、橡胶种植业、观赏花卉业等行业。
The composition of heavy metals in garbage compost in Hainan was analyzed.The results were compared with the heavy metals residue values in the non-pollution agricultural production demonstration bases in Hainan and with the technical indices of the relevant national standards.The comparison showed that the heavy metals residues in the soil,fruit and vegetable samples from the non-pollution production demonstration bases were within the national standards.The bases complied with the requirements for non -pollution production.But the aluminum,cadmium and arsenic contents in the garbage compost exceeded seriously the relevant national standards.The problem of possible second pollution and damage to the ecological environments in Hainan caused by improper use of garbage compost was put forward.Analyses showed that the fertility of garbage compost was relatively high.Its proper use could turn garbage into valuable fertilizer.But heavy metals accumulated easily in garbage compost.Therefore,the garbage compost when used as fertilizer must be limited in some crops.Garbage compost is not suitable for food crop production,especially green food but for forestry,rubber plantations,pot flowers,etc.
出处
《热带作物学报》
CSCD
2003年第2期86-90,共5页
Chinese Journal of Tropical Crops
