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时间:2020-04-16
《豇豆对营养元素的吸收积累与分配规律研究-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第27卷第6期水土保持学报Vo1.27No.62013年12月JournalofSollandWaterConservati0nDec.,2013豇豆对营养元素的吸收积累与分配规律研究王卫平,薛智勇,朱凤香,陈晓呖,姚燕来,洪春来(浙江省农业科学院环境资源与土壤肥料研究所,杭州310021)摘要:为深入探明豇豆的营养元素需求特征,利用营养液培养方法研究豇豆对不同营养元素的吸收积累与分配规律。结果表明:豇豆不同生育期对氮、磷、钾3大养分要素的需求与积累是不同的,总体上看,豇豆对氮素需求最高,钾素次之,磷素最少,豇豆全生育期氮、磷、钾的吸收与积累量的比值为4
2、.71:1.52:3.83;在豇豆4个主要生育期中,养分需求最多的时期在结荚初期,其次是结荚后期;豇豆不同器官对氮、磷需求与积累的排序为:叶片>荚果>茎>根;对钾素需求与积累的排序为:茎>荚果>叶片>根;豇豆植株中微量元素的需求与积累量排序为:Ca>Mg>Fe>Zn>Mn>Cu,其吸收与积累量的比值依次为29.4:6:1:0.32:0.02:0.04;豇豆不同生育期对Ca、Mg、Zn和Cu元素需求与积累的排序为:结荚初期>结荚后期>伸蔓期>幼苗期;而对Fe和Mn元素需求与积累量排序为:伸蔓期>结荚初期>结荚后期>幼苗期。关键词:豇豆;生育期;养分动态中图
3、分类号:Q945.12文献标识码:A文章编号:1009—2242(2013)06一Ol58—04StudyonCharacteristicsOfAccumulationandDistributionofNutritionalElements’UptakeofAsparagusBeanWANGWei—ping,XUEZhi—yong,ZHUFeng—xiang,CHENXiao—yang,YAOYan—lai,HONGChun—lai(InstituteofEnvironmentResourcesandSoilFertilizer,ZhejiangAcad
4、emyofAgriculturalScience,Hangzhou310021)Abstract:Inordertodeeplyprovecharacteristicsofnutrientsdemandofasparagusbean,throughthenutri—entsolutionculturetest,theruleofaccumulationanddistributionofdifferentnutritionalelementsofuptakeofasparagusbeanwerestudied.Theresultsshowedthatthe
5、accumulationofN,P,Kweredifferentinthedifferentgrowthstagesofasparagusbean,theabsorbedamountwasN>K>P.Theabsorptionandaccu—mulationratioofN,P,Kwas4.71:1.52:3.83.Inthefourmaingrowthperiodofasparagusbean。thepe—riodofthemostnutrientneedswasearlyinthepod,followedbythelatepod.Thesequenc
6、eofnitrogenandphosphatedemandandaccumulationinthedifferentorgansofasparagusbeanwereleaf>pod>stem>root.Thepotassiumdemandandtheaccumulationsequencewasstem>pod>1eaf>root.ThedemandandtheaccumulationoftraceelementsintheasparagusbeanplantssequencewasCa>Mg>Fe>Zn>Mn>Cu,theabsorptionanda
7、ccumulationratiowas29.4:6:1:0.32:0.02:0.04.Indifferentgrowthstagesofasparagusbean,Ca,Mg,ZnandCudemandandtheaccumulationwerethesame,itssequencewasearlypod>podlate>stretchvine>seedlingstage.Indifferentgrowthstagesofasparagusbean,FeandMnele—mentsdemandandaccumulationsequencewasstret
8、chvine>earlypod>podlate~seedlingstage.Ke
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