鄂東南紅壤水分特性和入滲性能的研究.pdf

1、華中農(nóng)業(yè)大學碩士學位論文鄂東南紅壤水分特性和入滲性能的研究姓名：陳浩申請學位級別：碩士專業(yè)：土壤學指導教師：呂國安20030601鄂東南紅壤水分特性和入滲性能的研究AbstractIntheredregionofthesoutheastofHubeiprovince，theendofthesummerandautumnarethedroughtseason，soilwaterisveryimportantforcropproductio

2、nanderosionatthattimeMyresearchincludethewatercharacteristicsofseveralkindsoferosionsoilusingpressuremembraneextractorandthepercolationcharacteristicsusingsimulatorrainfallinthefieldsandinthelabThewater—holdingcapacityof

3、redsoilderivedfrom包washigherthantheredsoilderivedfromGraniteInthelowersoilsuctionrange，thedifferentamongthewate—oldingcapacityofweeklyandmoderateandIntenselyerosivered—soilderivedfrom如andGranitewasnotwidelyInthehighersoi

4、lsuctionrangethedifferentwaswidelyThatoftheintenselyerosivered—SO“washigherthanthemoderateandintenselyerosivered—soilThewatersupplycapacityofredsoilinthelowersoilsuctionrangewashigherthanthatofinthehighersoilsuctionrange

5、Inthelowersoilsuctionrange，Thewater—supplycapacityofredsollderivedfromQ2washigherthanthatderivedfromgranitewhileInthehighersoilsuctionrangethedifferentwasnotwidelyAstothedifferentmothermaterial，Thewatersupplycapacityofwe

6、eklyerosivered—soilwasthehighestthatofthemoderatewasthesecondly，thatoftheintenselyerosivered—sollwasthelowestAvailablewatercapacityofweeklyerosionred—soilderivedfromQ2washigherthanthatderivedfromgraniteThoseofmoderateand

7、intenselYerosivered—soi1derivedfromQ2waslowerthanthatderivedfromgraniteAstothesamemothermaterialthewater—validityoftheweeklyerosivered—soiliShigherthanthemoderateandintenselyerosivered—soil_Thebulkdensityofaggregatesincr

8、easedwhenthesizeofaggregatesdecreasedwhilethetotalporositiesdecreasedSomespecialSOilwatercontentandtheaerateporositiesinthelowsuctiondecreasedwhentheSizeofaggregatesdecreasedThesaturatedhydraulicconductivityofthered—soil