稻草不同還田方式和覆蓋物種類(lèi)在烤煙生產(chǎn)上的應(yīng)用研究.pdf

1、湖南農(nóng)業(yè)大學(xué)碩士學(xué)位論文稻草不同還田方式和覆蓋物種類(lèi)在烤煙生產(chǎn)上的應(yīng)用研究姓名：梁文旭申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：農(nóng)業(yè)推廣農(nóng)業(yè)資源利用指導(dǎo)教師：羅建新20070901湖南農(nóng)業(yè)大學(xué)農(nóng)業(yè)推廣碩士學(xué)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