蒸散是农田表面水分输送到大气中去的一种生物物理的综合过程,是作物水分平衡的主要支出项,对作物生长发育及干物质的形成有重要影响。本文应用热量平衡法及Penman-Monteith方程,探讨在小麦生育后期林网对农田蒸散的作用,为揭示林网内作物的发育和产量形成规律提供理论依据。 Evapotranspiration is a biophysical integrated process of surface water transport to the atmosphere and is a major expenditure item of crop water balance, which has an important impact on crop growth and dry matter formation. In this paper, heat balance method and Penman-Monteith equation were used to explore the effect of forest net on farmland evapotranspiration in the later stage of wheat growth, which provided a theoretical basis for revealing the crop development and yield formation in forest net.