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.
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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