Eco-agriculture生态农业 Eco-agriculture is defined as a system which is established with ecological and economic principles and by systems engineering methods, realizes high productivity and ecological good cycling,and coordinates economic,ecological and social effects. The coordination of economic,ecological and social effects is represented by cost-effect,renewal of resources and progress of society.Eco-agriculture 生态农业 Eco-agriculture is defined as a system which is established with ecological and economic principles and by systems engineering methods, realizes high productivity and ecological good cycling, and coordinates economic, ecological and social effects. The coordination of economic, ecological and social effects is represented by cost-effect, renewal of resources and progress of society