基于灌水均匀度的温室自流式低压滴灌设计方法研究  

Study on Design Method of Self-flow Low-pressure Drip Irrigation in Greenhouse Based on Irrigation Uniformity

作　　者：王红 郭巍[1] 郭金雨 郭辉 赵程铭 罗金梅 WANG Hong;GUO Wei;GUO Jin-yu;GUO Hui;ZHAO Cheng-ming;LUO Jin-mei(College of Engineering,Heilongjiang Bayi Agricultural University,Daqing Heilongjiang 163319)

机构地区：[1]黑龙江八一农垦大学工程学院,黑龙江大庆163319

出　　处：《现代农业科技》2018年第21期157-160,共4页Modern Agricultural Science and Technology

基　　金：2017年黑龙江省大学生创新创业训练计划项目(201710223037);黑龙江省大庆市科技项目(zd-2017-117)

摘　　要：温室滴灌技术应用广泛,但现有的低压滴灌系统设计仍不完善,灌水均匀度难以保证。本文通过对温室大棚中低压滴灌灌水均匀度和出水量进行试验研究,以水头高度、支管和毛管的排布方式及毛管的数量、长度为参数,分析灌水均匀度和出水量的变化规律。结果表明,毛管长度越长、数量越多,灌水均匀度越小;当控制其他参数不变时,随着水箱水头高度下降,支管、毛管逐渐被水充满,灌水均匀度和出水量逐渐增大;当灌水面积相同时,毛管沿支管集中分布较发散分布灌水均匀度更高。可通过适当调整支管和毛管的排布方式,改变水头高度和毛管数量、长度来保证灌水质量。试验结论为确定符合作物生长的最优低压滴灌系统布置方案提供参考。The greenhouse drip irrigation technology is widely used.The design of the existing low-pressure drip irrigation system is still not perfect,and the uniformity of irrigation is difficult to guarantee.In this paper,through the experimental study on the uniformity and water output of low-pressure drip irrigation in greenhouse,the variation of irrigation uniformity and water output was analyzed by the height of head,the arrangement of branch pipe and capillary and the number and length of capillary.The results showed that the longer and the more of the capillary,the smaller the uniformity of irrigation.When other parameters were kept unchanged,with the water head height of the water tank falling,the branch pipe was filled with water gradually,the irrigation uniformity and water output increased gradually.When the irrigation area was the same,the centralized distribution of the capillary along the branch was more uniform than the divergent distribution of irrigation.The quality of irrigation could be guaranteed by adjusting the arrangement of the branch pipe and the capillary tube,changing the height of the water head and the number of capillary tubes approp-riately.The test conclusions provided references for determining the optimal low-pressure drip irrigation system layout scheme in line with crop growth.

关 键 词：低压滴灌 灌水均匀度 水头高度 毛管数量 排布方式 

分 类 号：S625.58[农业科学—园艺学]