基于正交试验法下对喷灌均匀性影响因子的综合分析  

Comprehensive analysis of influence factors on sprinkler irrigation uniformity based on orthogonal experiment

作　　者：唐玉婷 杨盛翔 杨进平 郭依剑 袁寿其[2] TANG Yuting;YANG Shengxiang;YANG Jinping;GUO Yijian;YUAN Shouqi(School of Energy and Power Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China;National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China)

机构地区：[1]江苏大学能源与动力工程学院,江苏镇江212013 [2]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013

出　　处：《排灌机械工程学报》2022年第11期1145-1150,共6页Journal of Drainage and Irrigation Machinery Engineering

基　　金：江苏省重点研发计划项目(BE2021341);江苏大学农业装备学部项目(NZXB20210101);2022年度江苏省研究生科研实践创新项目(KYCX22_3672)。

摘　　要：为了优化轻小型平移式喷灌机组灌溉施肥工况,在喷灌工作压力为0.25 MPa,比例吸肥泵进出口压力为0.22 MPa情况下,设计正交试验以研究施肥浓度、喷头车行走速度和喷灌高度3个因素对轻小型平移式喷灌机组水肥一体化性能的影响;对试验结果进行极差分析和方差分析,获得三因素的最佳水平组合并对比三因素影响因子大小.试验结果表明:影响轻小型平移式喷灌机组肥液浓度均匀度(CU_(1))及肥液浓度分布均匀度(DU_(1))的主要影响因素是喷灌高度,而施肥浓度和行走速度对其影响较小,显著性均大于0.05.影响肥液质量均匀度(CU_(2))最主要因素是喷头车行走速度,其次是喷灌高度,而施肥浓度对其影响不具有统计学意义.施肥浓度、喷灌高度和行走速度对肥液质量分布均匀度(DU_(2))影响因子显著性均大于0.05.最优施肥技术水平组合为A1B2C2,即施肥浓度为0.4 g/L,喷灌高度为1.2 m,行走速度为30 m/h.In order to optimize the irrigation and fertilization conditions of the light and small translational sprinkler irrigation units,an orthogonal test was designed to investigate the effect of three factors fertilizer concentration,nozzle vehicle travel speed and sprinkler height on the performance of water-fertilizer integration in the light and small translation sprinkler irrigation units under a sprinkler opera-ting pressure of 0.25 MPa and a proportional fertilizer pump inlet and outlet pressure of 0.22 MPa.The test results were analyzed by extreme difference and variance to obtain the optimal horizontal combination of the three factors and compare the size of three influence factors.The results show that the main factors affecting the uniformity of fertilizer concentration(CU_(1))and the uniformity of fertilizer concentration distribution(DU_(1))are the height of sprinkler irrigation,while the fertilization concentration and walking speed have little impact on it,and the significance is higher than 0.05.The main factor affecting CU_(2) is the travel speed,followed by the sprinkler height,and the fertilizer concentration has no significance on it.The influence factors of fertilizer concentration,sprinkler height and travel speed on DU_(2) are all greater than 0.05.The optimal fertilizer technology level combination is A1B2C2,i.e.,the fertilizer concentration is 0.4 g/L,the spray irrigation height is 1.2 m and the travel speed is 30 m/h.

关 键 词：喷灌机组 水肥一体化 肥料浓度 喷灌均匀性 喷灌高度 行走速度 

分 类 号：S275[农业科学—农业水土工程]