帶狀留茬間作防風(fēng)蝕效果的風(fēng)洞試驗(yàn)研究.pdf

1、內(nèi)蒙古農(nóng)業(yè)大學(xué)碩士學(xué)位論文帶狀留茬間作防風(fēng)蝕效果的風(fēng)洞試驗(yàn)研究姓名：李滿亮申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：農(nóng)業(yè)機(jī)械化工程指導(dǎo)教師：趙士杰20080501ExperimentalStudyonPreventingErosionEffectofIntercroppingStripsStubblebyWindTunnelAbstractBasedontherealisticcharacteristicsofIntercroppingStripsStu

2、bbleinthenorthregionofYinShanmountainarea，thepaperstudiesonpreventitagerosioneffectofpotatobarefarmland(controllingploughedland)，wheatandpotatointercroppingfarmlandwhosestripswidthareuniformbywindtunnelForthepurposeofoff

3、erringthereferencedataofestablishingtheoptimumstripsbreadth，theoptimumoverlaydegreeandstubbleheightofintercroppingstripsstubble；atthesametimetoconfirmtheeffectiverangethatthecropresidues(conservationtillagestrip)toprotec

4、ttheexposedzone(traditionaltillagestrip)indifferenttestconditionsFinally，appliedtheanalogicaltheories，thepapervenifiedthereliabilityofthewindtunnelmodelsimulationtestbycarryingthroughawindtunnelmodelsimulationtest，compar

5、edwiththeresultsofthephysicalmodelsimulationtest111econclusionfromanalysisasfollows：intercroppingstripsstubblecarllowerthewindblownmasseffectivelytOthetraditionfarmingstripswhichtakesprotectiveeffectInasmallstripsbreadth

6、intercroppingconditions，andwhenstripswidthofprotectiontillageandtraditionfarmingareuniform，theoptimumoverlaydegreetheoptimumstubbleheightandstripsbreadthare30％30cmand15mTheeffectiverangethattheconservationtillagestriptop

7、rotectthetraditionaltillagestriparedifferentindifferenttestconditions～Vhentheoverlaydegreeto30percent，thecenterwindvelocityof9m／s，cropresiduesattheheightof30cm，lm，15mand2mstripsbreadthoftheconservationtillagestripprotect

8、ionzonewiththeadjacenttraditionaltillagestriparethebest，theeffectiveprotectionofallfortheleewardsidewithstubbleandresiduefromtheexposedzoneatthejunctionof3|4exposedzoneWhencentre晰ndvelocityandthestubbleheightaresmallerth

9、eeffectiverangethattheconservationtillagestriptOprotectthetraditionaltillagestripissmallerindifferentstripsbreadthTheresultofthewindtunnelmodelsimulationtestisthesame、析ththeresultsofthephNrsicalmodelsimulationtestItprovi

10、desthetheoreticalbasisforthewindtunnelmodelsimulationresearchKeywordsIntercroppingStripsStubble；AmountofWindErosion；ChangesofWindVelocityFigure；ModelDirectedby：ZHAOShijieAppIicantformasterdegree：LIManIiang(AgriculturalMe