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时间:2020-04-19
《肥力水平对怀地黄脱毒苗生长发育和生理特性的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、河南农业科学,2013,42(5):136—140JournalofHenanAgriculturalSciences肥力水平对怀地黄脱毒苗生长发育和生理特性的影响徐守真,陈明霞。,李明军,李敬敬,张晓丽(1.河南师范大学生命科学学院,河南新乡453007;2.河南省高校道地中药材保育及利用工程技术研究中心,河南新乡453007)摘要:研究了不同肥力水平对怀地黄脱毒苗生长发育和生理特性的影响。结果表明:随着肥力水平的增加,怀地黄脱毒苗的株高、冠幅、功能叶面积和叶片数呈先升高后降低的变化趋势,但变化较小,差异大多未达到显著水平。8月份,氮磷钾
2、复合肥1125kg/hm2处理的株高和叶片数最大(35.29cm、26.62片);1687.5kg/hm2处理的功能叶面积最大(410.32cm2);9月份,1687.5kg/hm2处理的冠幅最大(60.52cm)。叶绿素总含量、净光合速率和蒸腾速率均随着肥力水平的增加呈先上升后下降的趋势,1687.5kg/hm2处理达到最大值,分别为2.39mg/g、26.30~mol/(m2·s)、6.55mmol/(m?·s);叶片的过氧化物酶(PoD)和超氧化物歧化酶(SOD)活性随着肥力水平的增加而增加。综合考虑,氮磷钾复合肥1687.5kg/h
3、m2较适宜脱毒怀地黄苗的生长发育。关键词:肥力;怀地黄;脱毒苗;生长发育;生理特性中图分类号:$567.23文献标志码:A文章编号:1004—3268(2013)05—0136—05EffectsofFertilityLevelonGrowthandPhysiologicalCharactersofRehmanniaglutinosaf.hueichingensis(ChanetSehih)HsiaoVirus.—freePlantletsXUShou—zhen,CHENMing—xia,,LIMing—jun,,LIJing—jing,Z
4、HANGXiao—li'(1.CollegeofLifeScience,HenanNormalUniversity,Xinxiang453007,China;2.EngineeringTechnologyResearchCenterofNursingandUtilizationofGenuineChineseCrudeDrugs,UniversityofHenanProvince,Xinxiang453007,China)Abstract:Theeffectsofdifferentfertilitylevelsonthegrowthandp
5、hysiologicalcharacteristicsofvirus-freeplantletsofRehmanniaglutinosaf.矗Pc,zgP72ss(ChanetSehih)Hsiaowerestu—died.Theresultsshowedthatwiththeincreaseoffertilitylevel,theplantheight,crownwidth,leafarea,andleafnumberofvirus—freeseedlingpresentedatrendofincreaseatfirstanddecrea
6、se1ater.InAugust,plantheightand1eafnumberreachedthemaximum(35.29cmand26.62leaves)underthetreatmentof1125kg/ha;leafareareachedthemaximum(410.32cm)underthetreat—mentof1687.5kg/ha.InSeptember,crownbreadthreachedthemaximum(6O.52cm)underthetreatmentof1687.5kg/ha.Thechlorophyllc
7、ontent,netphotosyntheticrate,andtranspirationratealsopresentedatrendofincreaseatfirstanddecreaselaterwiththeincreaseoffertilityleve1。andreachedthemaximum[2.39mg/g,26.30/~mol/(m。·s),and6.55mmol/(m·S)]underthetreatmentof1687.5kg/ha.Also,PODandSODvigorin1eavesincreasedwiththe
8、increaseoffertilityleve1.Overall,thefertilitylevelof1687.5kg/haiSsuitableforthegrowthandd
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