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当代研究田间土壤水分循环是以土壤—植物—大气连续统一体,(Soil—Plant—Atmosphere Continuum,简称SPAC)为基础的。土壤—植物系统是SPAC的一个重要的子系统,该系统中的水分运移、能量转换等问题,已受到许多国家中科研人员的重视,尤其是美国,在这方面的研究比较广泛和深入。这一问题已成为土壤物理、植物生理等学科的重要课题之一。晚近,由于数学、物理学、生物学向这一领域渗透,使这一领域的研究更加深化了。尤其是电子计算机的应用,对该项研究起了促进作用。
Soil moisture cycling in contemporary research fields is based on the Soil-Plant-Atmosphere Continuum (SPAC) system. Soil-plant system is one of the important subsystems of SPAC. The problems of water migration and energy conversion in this system have attracted the attention of researchers in many countries, especially the United States. The research in this field is extensive and in-depth. This issue has become one of the important topics in soil physics, plant physiology and other disciplines. Recently, due to the penetration of mathematics, physics and biology into this field, the research in this field has been further deepened. In particular, the application of electronic computers has played a catalytic role in this research.