铺设长度及入口压力交互作用对小流量滴灌带灌水均匀度的影响  

Effect of the interaction between laying length and inlet pressure on irrigation uniformity of the small flow drip irrigation belt

作　　者：阿垦里白·木赛 李丰琇 艾鹏睿 马英杰[1,2] 付秋萍 田敏[1,2] 阿布都卡依木·阿布力米提 Akenlibai·Musai;LI Fengxiu;AI Pengrui;MA Yingjie;FU Qiuping;TIAN Min;Abudukayimu·Abulimiti(College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,Urumuqi 830052,China;Xinjiang Key Laboratory of Hydraulic Engineering Safety and Water Disasters Prevention,Urumqi 830052,China;Xinjiang Smart Water for Agriculture Co.,Ltd.,Changji 831100,China)

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052 [2]新疆水利工程安全与水灾害防治自治区重点实验室,新疆乌鲁木齐830052 [3]新疆中农智水科技有限公司,新疆昌吉831100

出　　处：《水资源与水工程学报》2023年第4期217-224,共8页Journal of Water Resources and Water Engineering

基　　金：国家重点研发计划项目(2021YFD1900804-04);自治区重点研发专项项目(202107331);机采长绒棉水肥高效利用技术研究及示范项目(20210101);自治区重大科技专项项目(2020A01002-2)。

摘　　要：为探究滴灌带铺设长度与入口压力交互作用对灌水均匀度的影响。以3种J型(进口型号)滴灌带和1种G型(国产型号)滴灌带为研究对象,分别对不同铺设长度和入口压力组合下的滴头流量进行测定,并运用变差系数(C_(v))、Christiansen均匀系数(C_(u))及Keller均匀系数(E_(u))进行了评价。结果表明:C_(v)、C_(u)、E_(u)均随着滴灌带铺设长度和入口压力的变化而变化,C_(u)与E_(u)呈正相关,与C_(v)呈负相关;以滴水孔流量变差系数C_(v)为判别指标,滴灌带铺设长度为200 m时,J_(1)型入口压力为5~11 m、J_(2)型入口压力为3~11 m的滴灌带质量等级均为A(优);入口压力在1~11 m范围时,J_(3)型滴灌带在各压力下的质量等级均为B(良)、G型滴灌带质量等级均为D(不合格)。滴灌带铺设长度为100 m时,J型滴灌带入口压力在1~11 m范围的质量等级均为A(优);G型入口压力在1~3 m时滴灌带质量等级为C(一般)。以均匀系数E_(u)和C_(u)为判别指标,J型滴灌带铺设长度为300 m时灌水均匀度均最低,入口压力为9~11 m时灌水均匀度均最高。基于上述判别指标,本试验所选各类型滴灌带铺设长度和入口压力的最佳搭配为:J_(1)型滴灌带铺设长度200 m、入口压力9 m;J_(2)型滴灌带铺设长度200 m、入口压力11 m;J_(3)型滴灌带铺设长度200 m、入口压力11 m;G型滴灌带铺设长度100 m,入口压力7 m。In order to explore the influence of the interaction between the laying length of drip irrigation belt and inlet pressure on the irrigation uniformity,three J-type(imported)drip irrigation belts and one G-type(made in China)drip irrigation belt were laid for the study of drip flow under different laying lengths and inlet pressure combinations.Then,the indices of Christiansen uniformity coefficient(C_(u)),variation coefficient(C_(v))and Keller uniformity coefficient(E_(u))were used to evaluate the drip irrigation belts.Experimental results show that C_(v),C_(u)and E_(u)all change with the inlet pressure and laying length,C_(u)is positively correlated with E_(u),but negatively correlated with C_(v).With C_(v)as the discrimination index,when the laying length is 200 m,the inlet pressure of J_(1)-type ranges from 5 to 11 m,and that of J_(2)-type ranges from 3 to 11 m,the quality of the drip irrigation belt can reach A(excellent);the quality of J_(3)-type is B(good)and G-type is D(unqualified)when the inlet pressure fall in the range of 1-11 m.When the laying length is 100 m,the quality of J-type drip irrigation belt is A(excellent)under the inlet pressure of 1-11 m;G-type is C(general)under the inlet pressure of 1-3 m.With the uniformity coefficient E_(u)and C_(u)as the discriminant indices,the irrigation uniformity of J-type drip irrigation belt is the lowest when the laying length is 300 m,and it is the highest when the inlet pressure is 9-11 m.Based on the above criteria,the optimal combination of laying length and inlet pressure of different drip irrigation belts are as follows:the length is 200 m,the inlet pressure is 9 m for J_(1)-type drip irrigation belt;the length is 200 m,the inlet pressure is 11 m for J_(2)-type and J_(3)-type drip irrigation belt;the length is 100 m,the inlet pressure is 7 m for G-type drip irrigation belt.

关 键 词：滴灌 小流量滴灌带 灌水均匀度 铺设长度 入口压力 

分 类 号：S275.6[农业科学—农业水土工程]