摘要
提出近年来研究探讨面向环境的土壤磷素测定与表征方法日益受到重视 ,主要的研究工作集中在测定土壤中对藻类生长有效的磷的数量和评估磷在水土界面的化学行为方面。介绍并评述了目前常用的一些评价土壤磷素环境行为的参数主要包括易解吸磷、藻类有效磷、土壤最大吸磷量或磷吸持指数、磷零点吸持平衡浓度和磷吸持饱和度等。
Soil that contains high levels of Phosphorus can become primary source of bioavailable P in runoff and thus contribute a large share to surface water eutrophication. Modern soil testing technology cannot only focus on measuring the level of plant-available P in soil. In stead, the test must expand beyond their traditional scope to offer environment-oriented soil P. Such the soil tests are able to measure other pools of P or offer an environmental interpretation for analytical results gained. Widely used environment related soil P parameters include readily desorbable P (RDP), bioavailable P (BAP), sorption index (SI), equilibrium P concentration at zero sorption (EPC0) and degree of P sorption saturation (DPSS). They are briefly introduced and evaluated in the present paper.
出处
《农业环境保护》
CSCD
2000年第5期282-285,共4页
Agro-Environmental Protection
基金
中国科学院重大基金!KZ95T -04 -01资助项目
关键词
土壤
磷素
非点源污染
吸持
解吸
土壤监测
农业
soil phosphorus
non-point source pollution
soil testing
sorption
desorption
