滴灌系统控制面积规模的探讨

滴灌控制面积对滴灌系统的投资成本和运行费用有明显的决定作用，是滴灌系统设计中必须考虑的问题。本文根据滴灌系统设计理论分析了滴灌控制面积对首部工作流量、工作压力、运行电费和对田间轮灌管理及农田灌溉安全的影响。结果表明，随着滴灌控制面积的扩大，首部工作流量和压力提高，导致运行电费增大；而且引起田间轮灌时间紧张，管理困难；同时还使灌溉安全性降低。

Research on the Irrigated Area for a Drip Irrigation System

The irrigated area should be considered in the design of a drip irrigation system (DIS) because it pre-eminently influences the DIS investment and running cost. The effects of the irrigated area on the working discharge and head of upstream installations of the DIS, system operation cost, field management for rotation irrigation, and water safely supply for crops were analyzed in this paper with the theory of design DIS. The results indicated that with the expansion of irrigated area, the working discharge and head of the upstream installations would be increased as well as the system operation cost, and the rotation irrigation management became difficult due to a short time for water application for crops, furthermore, the crops couldn’t be ensured in irrigation.