The measurement of seasonal evapotranspiration above corn canopy based on the Bowen ratio-energy balance method
1988
Lee, Y.S. | Im, J.N. (Rural Development Administration, Suwon (Korea R.). Agricultural Sciences Inst.) | Kang, Y.H. (Yonsei Univ., Seoul (Korea R.))
Heat energy distribution forming net radiation above corn canopy was determined by means of the Bowen ratio-energy balance method. Total-global solar radiation above crop canopy during the growing season was 1,559 MJm** (-2) and total latent heat flux density was 960 MJm** (-2). The data showed that 61.6% of the global solar radiation was used for a heat source of evapotranspiration (ETa) above corn canopy. Mean daily ETa ranged from 2.7 to 5.6mm. Total ETa, total drymatter, and water use efficiency were 394mm, 2,214gm** (-2), and 5.6gm** (-2) mm** (-1), respectively
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