高等植物內穩(wěn)性和生長率機理的研究.pdf

1、甘肅農業(yè)大學碩士學位論文高等植物內穩(wěn)性和生長率機理的研究姓名：庾強申請學位級別：碩士專業(yè)：草業(yè)科學指導教師：孫吉雄韓興國20050601SummaryAmaranthushypochondriacusLwereplantedinsandsandfertilizedwithdifferentNandPlevelThebiomass，C％，N％，P％ofleavesandstems，andwhichofroots，andN％，P％ofsoi

2、lsweremeasuredonceaweek(6timestotally)TherelationshipbetweentheN％P％andN：PofhigherplantsandtheequivalencyofsoilsandtherelationshipbetweentheC％，N％，P％，N：C，P：C，N：Pofplantsandgrowthratewerestudied，Theresultsshow：1，TheN％，P％and

3、N：Pofplantsincreasewiththeenhanceofthesoils’N％，P％andN：PbmtherateofincreasementbecomesmallerandsmallerwiththeindexsgoupTherelationshipcanbeexpressedbytheequationy=a_bc。，whichissignificativetoacertainextentbecauseitCanhelp

4、tounderstandthemechanismofhomeostasis2TheNandPofplantsarecoactivatedTheP％ofplantsincrease謝mtheriseofN％ofsoilsthoughtheP％ofsoilsareuniformAndtheN％ofplantsinhancewiththeincreaseofP％ofsoilswiththesameN％ofsoilsButtheeffectof

5、NtoPiSmuchmoreremarkablethantheinfluenceofPtoN3，TherelationshipbitweenN：Cofplantsandgrowthratecarlbepresentedbytheequationy=axb111atbetweenP：Candgrowthratecallbedenotedbyy：ax2b，N：Pandgrowthratebyy=(a)(b)／(x2c)whenPislimi