该技术是土壤速效养分田间快速测定技术，其经济、简便、快速，克服样本采集、运输、保存及分析的诸多困难及保持原状土壤的真实性。为农业生态中养分污染元素的快速监测提供新技术。项目全面系统地研究了影响膜法测定值的各种因素，并确定了不同生态条件下使用及比较的规范；? This technique is a rapid determination technique for soil available nutrients in the field. It is economical, simple and rapid, and overcomes the difficulties of collecting, transporting, preserving and analyzing samples and preserves the authenticity of undisturbed soils. Provide a new technology for rapid monitoring of nutrient-contaminated elements in agricultural ecology. The project comprehensively and systematically studied the various factors affecting the determination of membrane method and determined the specifications for use and comparison under different ecological conditions;