紫茎泽兰光合特性研究.doc

紫茎泽兰光合特性研究摘要为了解紫茎泽兰与环境因子的关系,寻找防治紫茎泽兰的突破口,通过Li-6400系列光合仪测定紫茎泽兰光合特性。结果表明:紫茎泽兰日净光合速率、气孔导度、蒸腾速率、光合有效辐射呈单峰曲线,到12∶00达到峰值;~?s、~?s、~?s、光合有效辐射247~2049μmol/m2?s;紫茎泽兰光饱和点为1500μmol/m2?s,?s,具有阳性偏阴的生态****性。本文来源于网络,本站发布的论文均是优质论文,供学****和研究使用,文中立场与本网站无关,版权和著作权归原作者所有,如有不愿意被转载的情况,请通知我们删除已转载的信息,如果需要分享,请保留本段说明。关键词紫茎泽兰;光合特性;净光合速率;气孔导度;蒸腾速率;光合有效辐射中图分类号S451;-5739(2009)22-0189-02 haracteristicsofEupatoriumadenophorumSpreng ZHOUShi-min1SUNYun-gang2OUGuo-teng1ZHAOYu-xiang3LIUJi-ming2 (1ForestryBureauofLuodianCountyinGuizhouProvince,LuodianGuizhou550100;2ForestryCollegeofGuizhouUniversity;3ForestDiseasesandInspectPestsPreventionandCareGeneralStation) AbstractTofindouttherelationshipbetweenEupatoriumadenophorumSprengandenvironment,andthebreakthroughofitsdefence,theleafphotosyntheticparametersoftheplantweremeasuredusingLi-(Pn),stomatalconductance(Gs),transpirationrate(Tr),photosyntheticactiveradiation(PAR)wereallsingle-peakcurves,reachingtheirhighestpointsat12∶,Gs,Tr,~?s,~?s,~?sand247~2049μmol/m2?s,??s,-demandingandslightlyshade-tolerant. KeywordsEupat