As to the energy flow, the energy production in cropland ecologic system is low-level and inefficient, and the structure of manure used is not diverse, fertilizer is the main manure.

• 结果显示，在能流方面，本区农田生态系统的能量产出水平和效率都处于较低水平，农田肥料投入单一，主要以化肥为主。