Standardized structure design of tetrad-ecoagricultural pattern in North China
北方“四位一体”生态农业模式标准化结构设计

Tetrad-ecoagricultural pattern is a typical mode and rapidly developing form of agriculture in North China. In accordance with the characteristics of the society, economy and resources of North China, the paper systemically analyzed the components of tetrad-ecoagricultural pattern, and the prime technological parameters selected for standardization. Finally, the standardized design structures of tetrad-ecoagriculture were tested.