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喷灌是一种先进的灌水技术,发达国家的喷灌面积在总灌溉面积中都占有很高的比重。大连地区自1973年引进喷灌技术,至1980年底累积有效喷灌面积达25万亩,但是近年来发展速度缓慢,分析原因,主要有如下问题:1.喷灌系统规划设计不合理在移动管道式喷灌机组中,大多数未进行规划设计,没建立灌溉制度,只凭主观的估计来确定喷水时间和灌水量;有的喷灌机组的喷
Sprinkler irrigation is an advanced irrigation technology. The sprinkler irrigation area in developed countries occupies a very high proportion of the total irrigated area. Sprinkler irrigation technology was introduced in Dalian since 1973. By the end of 1980, the accumulated effective sprinkling irrigation area reached 250,000 mu. However, the development speed has been slow in recent years. The main reasons for this are as follows: 1. Irrational planning and design of sprinkler irrigation system In the moving pipe sprinkler system Most of them did not carry out planning and design, did not establish an irrigation system, only subjective estimates to determine the timing of water and irrigation; some sprinkler spray