Analysis and calculation of energy flow on agro-ecological engineering of Liuminying
留民营农业生态工程能量流分析与计算

Taking Liuminying Village as an example,the energy flow of agro-ecological engineering is analyzed and calculated.Results show that analysis step of energy flow should include deciding system boundary,analyzing system structure,determining input and output of system energy and drewing energy flow scheme.Analyzing energy flow plays an important role on increasing productivity of system and improving the construction of agro-ecological engineering.