土壤铅污染对桑树生长及桑叶品质的影响研究  

Research on Impact of Soil Lead Pollution on Growth of Mulberry Tree and Quality of Mulberry

作　　者：任立研[1] 宋书巧[1] 蓝唯源[1] 黄金华[1] 

机构地区：[1]广西师范学院资源与环境科学学院,广西南宁530001

出　　处：《资源开发与市场》2009年第7期583-585,共3页Resource Development & Market

基　　金：广西科学研究与技术开发项目(编号:桂科攻0719005-2-2A);广西科学基金项目(编号:桂科自0679019)

摘　　要：运用盆栽试验和室内实验相结合的方法,研究了土壤不同浓度铅污染对桑树生长及桑叶品质的影响。结果表明,低浓度铅(≤200mg/kg干土)处理使桑树的株高呈现上升趋势,中、高浓度铅(≥300mg/kg干土)处理使桑树的株高呈现下降趋势;而桑叶中叶绿素总量、可溶性糖含量、淀粉含量均随着外加铅浓度梯度的增加呈先上升后下降的趋势,转折点为200mg/kg干土(土壤一级标准)。土壤中的铅浓度超过200mg/kg干土后,桑树生长及桑叶品质开始受到明显胁迫。This article researched the effects to mulberry growing and folia moil traits as the soil was contaminated in different Pb level by a way of combining pot incubation test and indoor test together.The results showed that the low Pb concentration（≤200mg/kg dry soil）disposing made the plant height a trend of ascending, middle and high Pb concentration（ ≥300mg/kg dry soil）disposing made the plant height a trend of cutting down. However, the gross content of chlorophyll, dissolubility suger and farina showed that a trend of ascending at the beginning and catting down after that with gradient increasing of Pb level, and the turning point was 200mg/kg dry soil （soil primary standard）. When the Pb level in soil overrtmed 200mg/kg dry soil, mulberry growing and folia mori traits were threaten sharply.

关 键 词：土壤铅污染 桑树 桑叶品质 

分 类 号：S153.6[农业科学—土壤学] S888[农业科学—农业基础科学]