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1、炭添加物对基于粒径研究砂性基质饱与导水率影响摘要：泥炭/砂混合物是一种广泛应用于高尔夫果岭坪床，运动场草坪,艺盆栽，及滤水系统中的基质。而，对于泥炭/砂混合基质水力特性的直接测量耗时较长。试验的目的为：（1）测试符合美国高尔夫协会（USGA）推荐标准的砂与高比例泥炭混合基质的饱和导水率（Ksat）是否为层流并遵循达西法则。（2）研究泥炭类别和有机物含量对之前建立的预测饱和导水率的多重线性回归模型的准确性的影响。试验采用3种泥炭类别即木本泥炭移（Peat,Inc.Minnesota,USA),苔聲泥炭(SunGroHorticulture,Maryland,USA
2、）和苇苔泥炭（DakotaPeat,NorthDakota,USA）,并分别按照泥炭占0%,0.2%,0.4%,0.8%,1.6%,4%,8%和10%的重量配比与纯砂混合。试验评估的模型如下：关键词：高尔夫球场；果岭；根层基质；导水率；土壤分析中图分类号：G849.3；S151.9文献标识码：A文章编号：1009-5500(2013)05-0066-06收稿日期：2013-08-15；修回日期:2013-10-09作者简介：王一淳（1983-）,女，黑龙江省佳木斯市人。E-mail：Yichun.Wang@Live.cnEstimatingwaterconduc
3、tivityofsand-basedrootzonematerialsfromparticlesizedistribution：effectsofpeatamendmentsWANGYi-chun,LIDe-ying(DepartmentofPlantSciences,NorthDakotaStateUniversity,Fargo,ND58108,USA)Abstract：Sandandpeatmixturesarewidelyusedinconstmctedrootzonesofgolfcourseputtinggreensandsportsfields,c
4、ontainerizedhorticulture,andwater"Iteringsystems.Directmeasurementofhydraulicpropertiesoftenistimeconsuming.OneoftheobjectivesofthisstudywastotestifsaturatedwaterflowislaminarandobeysDarcy"slawwhenalargeamountofpeatismixedwithsandthatconformtotheUSGAspecifications.Anotherobjectivewas
5、toevaluateapreviouslydevelopedmultipielinearregression(MLR)modelforpredictingsaturatedwaterconductivity(Ksat)asaffectedbypeattypesandorganicmatter(0M)content・Woodysphagnumpeat(Peat,Inc.Minnesota,USA),sphagnumpeatmoss(SunGroHorticulture,Maryland,USA),andreedsedgepeat(DakotaPeat,NorthD
6、akota,USA)weremixedwithsandat0%,0.2%,0.4%,0.8%,1.6%,4%,8%,and10%(w/w)inthefinalmixtures・ThemodeltestedwasLoglO(Ksat)二5.3407-0.5286Pb-1.2846CP-0.0442c+0.0612©5-0・6095e95,withPbasbulkdensity(g/cm3),CPascapillaryporosity(%),cassiltcontent(%),and巾5,巾10,巾16，巾84，巾95valuesfromtheparticlesiz
7、edistributioncurverepresentinggrainsizeinphi(©)unit・Briefly,©x二-log(2,d),withxrepresentingthepercentageofsandmasssmallerthandinsizeinatraditionalparticlesizedistributioncurve.ResuItsshowedthatDarcy?slawprevailedathydraulicpressuregradientsupto3.ResuItsalsoshowedthat,withexceptionofle
8、sshumifiedsp
