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1、第27卷第6期水土保持學(xué)報(bào)Vo1.27No.62013年12月JournalofSollandWaterConservati0nDec.,2013豇豆對(duì)營(yíng)養(yǎng)元素的吸收積累與分配規(guī)律研究王衛(wèi)平,薛智勇,朱鳳香,陳曉嚦,姚燕來(lái),洪春來(lái)(浙江省農(nóng)業(yè)科學(xué)院環(huán)境資源與土壤肥料研究所,杭州310021)摘要:為深入探明豇豆的營(yíng)養(yǎng)元素需求特征,利用營(yíng)養(yǎng)液培養(yǎng)方法研究豇豆對(duì)不同營(yíng)養(yǎng)元素的吸收積累與分配規(guī)律。結(jié)果表明:豇豆不同生育期對(duì)氮、磷、鉀3大養(yǎng)分要素的需求與積累是不同的,總體上看,豇豆對(duì)氮素需求最高,鉀素次之,磷素最少,豇豆全生育期氮、磷、鉀的吸收與積累量的比值為4
2、.71:1.52:3.83;在豇豆4個(gè)主要生育期中,養(yǎng)分需求最多的時(shí)期在結(jié)莢初期,其次是結(jié)莢后期;豇豆不同器官對(duì)氮、磷需求與積累的排序?yàn)椋喝~片>莢果>莖>根;對(duì)鉀素需求與積累的排序?yàn)椋呵o>莢果>葉片>根;豇豆植株中微量元素的需求與積累量排序?yàn)椋篊a>Mg>Fe>Zn>Mn>Cu,其吸收與積累量的比值依次為29.4:6:1:0.32:0.02:0.04;豇豆不同生育期對(duì)Ca、Mg、Zn和Cu元素需求與積累的排序?yàn)椋航Y(jié)莢初期>結(jié)莢后期>伸蔓期>幼苗期;而對(duì)Fe和Mn元素需求與積累量排序?yàn)椋荷炻?結(jié)莢初期>結(jié)莢后期>幼苗期。關(guān)鍵詞:豇豆;生育期;養(yǎng)分動(dòng)態(tài)中圖
3、分類(lèi)號(hào):Q945.12文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):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,F(xiàn)eandMnele—mentsdemandandaccumulationsequencewasstret
8、chvine>earlypod>podlate~seedlingstage.Ke