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《基于投影寻踪分类模型的暗管优化布局-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第54卷第10期湖北农业科学Vo1.54No.102015年5月HubeiAgricuhuralSciencesMay.,2015基于投影寻踪分类模型的暗管优化布局闫玉民,杨倩,李凯3,4(1.辽宁水利职业学院,沈阳110122;2.河南农业职业学院园艺园林系,郑州451450;3.沈阳水文局水情科,沈阳110015;4.河海大学水利水电学院,南京210098)摘要:为寻求综合效益最优的设施农田暗管布局方案。设计不同埋深与间距的暗管处理。探索不同处理对番茄(LycopersicDnescMlent
2、umMil1.)产量、品质、土壤盐分和有机质含量的影响,分析暗管工程的经济效益。并引入熵权系数法和投影寻踪分类模型,对不同暗管处理进行优选和评价结果表明,不同暗管处理对番茄产量和品质有显著影响.其中T2处理番茄产量品质综合水平最优:土壤EC与有机质含量以T1处理下降最为明显.降幅分别达到35.66%和18.08%:投影寻踪分类模型计算结果表明,T3为综合效益最佳的处理,投影值(Y)与暗管间距(1)、埋深(2)的回归模型为y:一2.203xl+0.340x2+0.831,相关系数为0.810,说明在
3、本试验的设计范围内,综合效益(投影值)与暗管间距呈负相关,与暗管埋深呈正相关。关键词:暗管排水:番茄(Lycopersic0necMlentumMil1.);土壤;品质;投影寻踪中图分类号:F224;$276.7~2文献标识码:A文章编号:0439—8l14I2015)10—2507—04DOI:10.14088~.cnki.issn0439—8114.2015.10.055OptimizationofLayoutSchemeofSubsurfaceDrainageTubesBasedonProj
4、ectionPursuitYANYu-min.YANGQian2,LIKai’(1.CollegeofWaterConservancy,VocationalInstituteofLiaoning,Shenyang110122,China;2.DepartmentofGardening,HenanVocationalCollegeofAsriculture,Zhengzhou451450,China;3.HydrologicalBureauofShengyang,DepartmentofWaterR
5、egime,Shenyang110015,China;4.CollegeofWaterConservancyandHydropower,HohaiUniversity,Nanjing210098,China)Abstract:Tofindoutthebestlayoutschemeofsubsurfacedrainagetubeswithbestcomprehensivebenefits,differenttreat—mentswithspaceanddepthoftubesweredesigne
6、d,theeffectsofdifferenttreatmentsontomatoquality,yield,soilECandorganicmatterwereexplored,andthecostofdrainagesystemwasanalyzed,meanwhile,theentropyweightmethodandpro—jectionpursuitmodelwereusedtoevaluatethedrainagetreatments.Resultsshowedthat:diferen
7、ttreatmentshadsignificanteffectsontomatoqualityandyield,T2wastheoptimaltreatmentwithbestcomprehensiveeffectsofqualityandyield;soilECandorganicmatterweredecreasedmostsignificantlyinT1,decreasingrateofwhichreached35.66%和18.08%;Thecal—culationresultsofpr
8、ojectionpursuitmodelshowedthatT3wasthetreatmentwithbestcomprehensivebenefits,projectionvalue(Y)anddrainagespace(1)anddepth(X2)showedarelationshipof),=一2.203xI+0.340x2+0.831,correlationcoefficientwas0.810,indicatingthatinthescopeofthisexperimen
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