地下水临界深度及其测定方法讨论

本文讨论了地下水临界深度的概念,指出了它与地下水极限蒸发深度、地下水适宜于农作物生长的埋藏深度等概念间的区别,明确了作为土壤改良学中排水深度和人工回灌地下水埋深上限指标使用的,应是临界深度。文章结合实例,介绍了四种测定临界深度值的方法。

DISCUSSION ON CRITICAL DEPTH OF GROUNDWATER AND ITSDETERMINATIVE METHOD

This paper discussed the conception of the critical depth of groundwater, indicated the differences between the critical depth, the limit-evaporable depth and the depth suitable to the growth of the crops of groundwater, and further made it clear that the upper limit index of the groundwater depths for drainage and the reinjection in the artifical supply should be the critical depth of groundwater. Through some concrete instances, this paper introduced four methods determining the value of critical depth.