With methodology of eec-cybernetics, a sensitivity model is introduced to analyze the structure and component interactive pattern as well as eec-cybernetic features in Urban-rural ecotones with a casestudy of the urban-rural ecotone in Tianjin City.

Study on the Ecological Control in the German B-Planning and its Application to Chinese Planning Control;

The techniques and practice of forest pest ecological control;

Preliminary exploration on ecological control of main soybean root disease and pest;

Feasibility of ecological management of sugarcane pest;

Review on the ecological management research of Helicoverpa armigera in Anhui Province;

By a lot of insecticides trials and analysis of apple orchard system,the ecological management measures to control majot insect pests on the basis of protecting and utilizing natural enemies are put forword in this paper.