Water thermodynamic functions are important indexes of water states and its energy in the Soil\|Plant\|Atmosphere Continuum space (SPAC), space and play an important role in SPAC studies. Experiments with winter wheat in the joint and heading growth periods in different fertility plots were carried out to study the energetic characteristics and through SPAC in farm ecosystem with different fertilities.\;Based on the day and night observation of water and temperature in the SPAC of farm ecosystems, it was sh...