毛竹筍材兩用林土壤養(yǎng)分限制因子及平衡施肥效益的研究.pdf

1、江西農(nóng)業(yè)大學(xué)碩士學(xué)位論文毛竹筍材兩用林土壤養(yǎng)分限制因子及平衡施肥效益的研究姓名：胡冬南申請學(xué)位級別：碩士專業(yè)：植物學(xué)指導(dǎo)教師：牛德奎2002.5.1學(xué)位論文：毛竹筍材兩用林土壤養(yǎng)分限制因子及平衡施肥效果的研究AbstractUsingthemethodofsystematicstudyonsoilnutrition，inthisdissertationthesoilnutritionofbambooshoot，timberutilizi

2、ngphyllostachyspubescensforestisstudied，thelimitingfactorsofsoilnutritionareconfirmed，theeffectisanalyzedthatsixdifferenttreatmentsoffertilizerapplicationonbambooshoot，timberandtheireconomicbenefitThemainresultsareasfoll

3、ows：1ThelimitingfactorsofsoilnutritionThelimitingfactorsofsoilnutritionandtheorderoflackinbambooshoot，timberutilizingphyllostachyspubescensforestinFengXinwasP，N，K，S，Mgtheyieldswouldbereducedby656％，477％，184％，I53％and151％re

4、spectivelywithoutapplicationoftheseelements2Theeffectonbambooshoot，timberoffertilizerbalanceapplicationBalanceapplicationfertilizercanstimulateeffectivelythegrowthofbambooshoots，timberAbouttheseventreatments，N2PIKl(1：030

5、：022)iSthebestinincreasingthenumberofbambooshoots，itsnumberofbambooshootsofunitareaandbambooisI58％，136％relativethenumberofCKN1P1K2(1：068：098)isthebestinincreasingtheweightofbambooshoots，thediameterofstemandimprovingthequ

6、alityofbambooshoot，itsincreaseofweighofbambooshootanddiameterofstemismorethantheincreaseOfCKN2PlK2(1：030：O43)isthebestinadvancingemergingshoot3TheeconomicbenefitonapplyingfertilizertophyllostachyspubescensApplyingfertili

7、zertobambooshoot，timberutilizingphyllostachyspubescenscanbringobviouseconomicbenefit，theoutputvalueofalltreatmentsthathavebeenappliedfertilizerismorethanthatofCK，andthebestoftreatmentisN2PIK2(N：P205：K20=1：030：043)itsnetp

8、rofithasbeen3660yuanmorethanCK、SinoneyearsApplyingfertilizeronthebasisofN2PIK2，theeconomicbenefitsofapplyingN，P，KarethebesttooInthecase，thecapitaloutputofCKisthebiggest，therationofcapitalutilizationishighestThenumberofKm