农田蒸散的研究

STUDY OF FIELD EVAPOTRANSPIRATION

摘要:

本文从田间实验资料入手,逐一分析了土壤、植物、大气因子对蒸散计算的影响。通过对彭曼-蒙蒂斯(Penman-Monteith)方法的修正和简化,确定了计算潜在蒸散和作物系数的模式。经验证,说明所建模式的效果是好的。从而提供了一种简单实用的作物需水量和实际蒸散量的计算方法,并对潜在蒸散和作物系数等概念提出了新的见解。

Abstract:

Analysis of the effects of soil, plant and atmospheric factors on the calculation of evapotranspiration is made on the basis of field experimental data. Models of potential evapotranspiration and crop coefficient are determined by the modification and simplification of the well-known Penman-Monteith Model. Tests agains field experimental data show that the models derived give satisfactory results.