Model of pig-methane-fruits is a new means of soil and water conservation

which uses the small watershed as a unit

methane as a link

and combines breeding industry

rural energy construction with plant industry as a material circle system.The model is of great significance to preventing soil and water loss

improving eco-environment

providing rural energy

constructing eco-agriculture

developing small watershed economy

solving the three problems concerning agriculture

rural areas and peasants.The article explains the main technical principles of pig-methane-fruits ecological-management model

summarizes and analyzes the main measures and benefits of the model in Hezibei and Baishuyuan watershed.