本文主要讨论控制地下水位的田间排水沟的间距计算方法。
In this paper, a simplified iterative arithmetic to calculate spacing of field drain is developed.
试验结果证明：均匀降水和及时灌排水能改善甜椒田间的综合生态环境；
The results showed that the well-distributed precipitation and timely drainage and irrigation can improve the comprehensive environment of chilli field.
通过对现有地下灌溉系统的分析，论述了田间地下土基透水管灌溉、排水兼用的可行性及机理分析。
The feasibility and mechanism analysis of a penetrable pipe for soil base in the field used to irrigate and drain was disccued by mpns of the analyais of present underground irrigation systems.
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