摘要
了解黔北高原残坡积石灰土元素的丰贫程度、超标危害现状及潜在生态危害状况,为黔北区域农业的持续发展和长远规划提供依据。以仁怀,桐梓,习水,赤水,古蔺等地岩溶区不同时代的石灰土为样体,进行调查,采样,检测,分析。结果显示：石灰土元素中K、Si、P、Pb、Ca、Na丰度均值为0.2~1.0;P2石灰土P综值为2.53,T2、P1、∈2-3为1.07~1.97,超标元素为Ni;石灰土RI值为30.42~54.28。分析认为：K、Si、P、Pb、Ca、Na为贫乏级元素;Ni为超标元素,P2石灰土为中度超标,T2、P1、∈2-3为轻度超标;石灰土潜在生态环境好。
In order to the agriculture in north Guizhou and provide theoretical basis to a sustainable development and long-term plan of regional agriculture, of residual calcareous soil of karst area in north Guizhou plateau, evaluated element abundance of calcareous soil, exceed the standard hazard situation, and the potential ecological harm. The study used calcareous soil in different age from the karst area in Renhuai, Tongzi, Xishui, Chishui, Gulin, etc as samples to conduct the investigation, sampling, testing and quality evaluation. The results show： elements of exceed standard was Ni, abundance average was 0.2 ~ 1 of K, Si, P, Pb, Ca, Na in calcareous soil elements; The comprehensive quality of P2 calcareous soil was 2. 53,and T2 ,Pt, ~ 2-3 in calcareous soil was 1.07 ~1.97 ; RI value was 30. 42 ~ 54. 28 in the calcareous soil. Analysis of that ： elements of poor level was K, Si, P,Pb, Ca, Na; elements of exceed standard was Ni, moderate exceed the standard of P2 of calcareous soil, and mild exceed the standard was T2 ,P1,∈3 ;and calcareous soil quality of comprehensive is relatively good.
出处
《科学技术与工程》
北大核心
2015年第7期146-149,157,共5页
Science Technology and Engineering
基金
中国地质调查项目(1212010634803)资助
关键词
石灰土
质量评价
元素丰度
超标危害
贵州
calcareous soil quality evaluation abundance exceed the standard of harm Guizhou
