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1、JinshanareaoffarmlandirrigationanddrainagesystemworksandCountermeasuresABSTRACTMountainareaoffarmlandirrigationanddrainagesystemsinagriculturaldevelopmentindifferenthistoricalperiods,astandardscalehasalargedifference,sincetherearestill19.2%theproportionofirrigationanddrainagein-o
2、nesystem.Thesefacilitiesforheavyrainoccurs,oftenfarmlandwater,lowwaterqualityproblems,whichseriouslyaffectedthenormalproductionoffieldcropsandvegetables.ThisarticleconductedacomprehensivesurveyofthestatusoftheMountainareawithintheirrigationandwaterconservancyfacilities,andcompare
3、dthetwomaintypes-irrigationanddrainageunity,thedegreeofdisplacementandvelocityofwaterquality,cropwaterrequirementtomeettheimgationanddrainageseparationsystemindifferencesfound:Bothirrigationanddrainagesystemsperformanceisquiteinthesummerclimateisrelativelystableyearinthetwosystem
4、s,includingimgationanddrainagein-onesystem,thecostadvantage.Yearinthesummerandfrequentrainstorms,irrigationanddrainagein-onesystemcouldeasilyleadtotheaccumulationofwatertocropproductionorevenalargeareaofcrops.Imgationanddrainageseparationsystemmoreconducivetothecroptowithstandhar
5、shweatherconditionstoensurestablecropyields.Onthisbasis,engineeredparametricanalysis,anumberofmeasuresforimprovementofexistingirrigationanddrainagefacilities.Layingofundergroundpipesystemtoincreaseirrigationanddrainagefacilitiesbackgroundonecanimprovesystemwaterlogging.Wideridgei
6、nthecontextoftheopenfarmlandintoanarrowridge,increaseinthepolderarea,increasingtheemergencypumpandothermeasurestoincreasethedisplacementoflowerTiansurfacewater.KeyWords:Farmland,Separationofirrigationanddrainage.Irrigationanddrainageinone,Jinshan1引言11.1问题的提出11.2国内夕卜研究进展11.2.1国内研究
7、设施菜田进展11.2.2国外研究设施菜田进展21.3灌溉方法与灌溉技术21.3.1灌水方法的评价标准21.3.2灌水方法的分类及适用条件31.4节水灌排71.4.1田间灌水技术71.4.2降水和回归水利用技术91.5灌排系统及其特点91.5.1灌溉91.5.2灌排分离系统理论与原理111.5.3灌排相邻布置111.5.4灌排相间布置111.5.5灌排合一系统理论与原理111.6农业灌溉水质要求121.7目的与意义132.灌排分离与灌排合一系统运行效果比较142.1引言142.2调查方法142.2.1典型系统的建筑参数142.2.2调查项目162.2.3调
8、查范围162.2.4数据采集与処理172.3两种系统运行效果比较172.3.1金