稻草不同還田方式和覆蓋物種類在烤煙生產(chǎn)上的應用研究.pdf

1、湖南農(nóng)業(yè)大學碩士學位論文稻草不同還田方式和覆蓋物種類在烤煙生產(chǎn)上的應用研究姓名：梁文旭申請學位級別：碩士專業(yè)：農(nóng)業(yè)推廣農(nóng)業(yè)資源利用指導教師：羅建新20070901湖南農(nóng)業(yè)大學農(nóng)業(yè)推廣碩士學位論文一ivAbstractInYongzhouofHunanwithfixedpositionplottrials，waysofstrawreturnedtofieldandsortsofmulchinghadbeencomparedforserie

2、sthreeyearsTheresultsofresearchwereasfollows：Theresultofresearchoneffectofdifferentwaysofstrawreturnedtofieldonsoilpropertiesofphysicsandd刪s自呵andYieldandqualityoffluecuredtobaccoshowedthattwowaysofstrawreturnedtofieldimp

3、rovedthestructurepropertyofsoil，yettheeffectoftreatmentwithstrawmulchingOnsoilstructurepropertywasbetterthanthetreatmentwithstrawreturnedtofielddirectlyThelawofeffectoftwowaysofstrawreturnedtofieldonsoilnutritionstatuswa

4、mcomparativelyconsistentTherootactivityoffluecuredtobaccowithstrawmulchingwasimprovedevidentlyyetthetreatmentwithstrawreturnedtofielddirectlyw叢notTheNRaseactivityoftobaccoleavesWasimprovedevidentlywithtwowaysofstrawretur

5、nedtofield，thedifferenceofeffectbetweentwowayswasinapparentWitllthetreatmentofstrawmulching，thegrowthWasbetterqualitywashigherandinnerchiccomponentswefcmoreharmoniousoffluecuredtobaccothanwithelsetreatmentTobaccowithstra

6、wreturnedtofielddirectlygrowthWaSnot硒goodaswithstrawmulchinginprophase，thegrowthWasgraduallyclosetoeachotheraftertherosettestageoftobaccoYetthecontentofnicotineintobaccoleavesWaStoohighwithstrawreturnedtofielddirectlyand

7、halTnonizeofmerchemiccomponentsWaSnot硒goodaswithstrawmulchingtreatmentTheresultofresearchOileffectofsortsofmulchingonsoiltemperaturehumidityandfluecuredtobaccogrowthshowedthat，Duringrootspreadingstagewithfilmmulching，the

8、effectofheatpreservationwithstrawmulchingWaSnotasgood勰withfilmmulchingAftertherosettestageoftobacco，thetemperaturehumiditychangerangeofsoilwaslittleandcouldkeepfittingtemperature—humidityconditionsfortobaccogrowthwithstr