水保所知识产出(1956---)知识库

为了研究滴头类型对浑水滴灌滴头堵塞的影响过程，选取 7 种滴头、配置 2 种浑水进行周期性间歇灌水试
验，提出了滴头结构系数指标，对比分析了不同类型滴头的堵塞状况。结果表明: 滴头类型是影响滴头堵塞的重要
因素，滴头结构系数可作为衡量不同类型滴头抗堵塞性能的重要指标，滴头抗堵塞性能随着结构系数增大而提高。
结构系数相同的 2 种不同浑水试验后，圆柱滴头的平均相对流量均大于片式滴头，当结构系数为 2% 时，2 种浑水
试验后，圆柱滴头的平均相对流量分别为 91. 66% 和 79. 63%，而片式滴头的平均相对流量仅为 75. 84% 和
65. 08%; 随着灌水次数的增加，片式滴头比圆柱滴头更容易发生大部分滴头整体堵塞现象; 不同类型滴头堵塞物
质量随着结构系数增大而减小，圆柱滴头和片式滴头结构系数由大到小依次为 E1、E2、E3 和 E4、E5、E7、E6，2 种浑
水试验后，滴头堵塞物质量由大到小依次为 E3、E2、E1 和 E6、E7、E5、E4。

 In order to explore the influence of emitter type on the process of emitter clogging in drip
irrigation with muddy water，seven kinds of emitters were selected and two kinds of muddy water were
allocated for periodic intermittent irrigation tests． Clogging characteristics of different emitters were
compared by putting forward the emitter structure coefficient． The results showed that the type of emitter
was an important factor affecting the blockage of emitter，and the structure coefficient of emitter could be
used as an important index to measure the anti-blockage performance of the different emitters． The anti-
clogging performance of emitter was increased with the increase of structure coefficient． When the
structure coefficients were the same，the relative flow rate of the cylindrical emitter was larger than that of
the flat emitter after two different muddy water tests． For example，when the structure coefficient was
2%，the relative flow rate of the cylindrical emitter was 91. 66% and 79. 63%，respectively． However，
the relative flow rate of the flat emitter was only 75. 84% and 65. 08%． With the increase of irrigation
times，the overall blockage of most emitters was more likely to occur in the flat emitters than in the
cylindrical emitters． The clogging mass of different emitters was decreased with the increase of structure
coefficient． The order of the structure coefficient of cylindrical emitters and flat emitters in descending
trend was E1，E2，E3 and E4，E5，E7，E6． However，the order of the emitters clogging mass after two
kinds of muddy water tests in descending trend was E3，E2，E1 and E6，E7，E5，E4．