pH值对绿豆种子萌发和幼苗生长的影响.pdf

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1、南方农业学报JOURNALOFSOUTHERNAGRICULTURE2012，43(10)：1466—1469ISSN2095—1191；CODENNNXAABhttp：／／www．nfnyxb．cornDOI：10．3969／j：issn．2095-1191．2012．10．1466pH值对绿豆种子萌发和幼苗生长的影响于秋良，杨志贤，李忠芳+，卢伟琳，何子龙，岑美婷，覃娟清，梁丽清，李稳(贺州学院，广西贺州542800)摘要：【目的】研究不同pH值溶液及其不同浸泡时间对绿豆种子萌发和幼苗生长的影响，为在南方地区通过科学育苗减少土壤酸胁迫提供科学依据。【方法】用pH值6．0．8．0

2、溶液分别浸泡绿豆种子6、12h，观察绿豆种子萌芽及幼苗生长状况。【结果】当溶液pH值为7．5时，绿豆种子萌发速度最决、数量最多，2d后浸种6、12h的发芽率分别为87．5％和92．5％；浸种6、12h，播种4aM分别以pH值7．5和7．0处理的幼苗株高最高。浸种6、12h时，分别以pH值6．5、7．0处理的绿豆幼苗鲜重最高，而均以pH8．0处理的幼苗干重最高。【结论】在广西贺州地区，适宜绿豆发芽及苗期生长的浸种溶液pH值为7．0～7．5，pH过高或过低均不利于绿豆的萌发和生长。关键词：绿豆；种子；萌发；幼苗；生长；pH值中图分类号：$522．041文献标志码：A文章编号：2095—

3、1191(2012)10—1466—04EffectsofapplyingdifferentpHvaluesonmungbeanseedgerminationandseedlingsgrowthYUQiu—liang，YANGZhi—xian，LIZhong-fang，LUWei-lin，HEZi-long，CENMei—ting，QINJun—qing，LIANGLi-qing，LIWen(HezhouUniversity，Hezhou,Guangxi542800，China)Abstract：【Objective】Thisresearchinvestigatedtheeffec

4、tsofapplyingdifferentpHvaluesanddeterminingthepHsoakingtimeonmungbeanseedgerminationandseedlingsgrowthinordertOprovidebasisforreducingsoilaciditystressbyscientificallyraisingseedlingsinSouthernChinabeanplantingaren．【Method】Theexperimentwasdesignedwith5differentdegreesofpHvaluesand2soakingtimes

5、．Theseedgerminationandseedlinggrowthofmungbeanwereob—served．【Result】ThcresultsshowedthatthegenninationspeedwasthefastestOUtofalltreatmentswhenthepHlevelwas7．5；underthispHlevel，themostnumerousseedlinggerminationwasalsoobserved．TwodaysaftertheseedsweresoakedinpH7．5solutionsfor6and12hrs，thegermin

6、ationratewas87．5％and92．5％，respectively．Ontheotherhand，fourdaysafterseeding，thetallestseedlingplantheightweremeasuredaftertheseedsweresoakedfor6and12hrsunderthepHsolutionof7．5and7．0，respectively．Forallseedssoakedfor6and12hrsunderpHlevel6．5andpHlevel7．0，respectively，theirseedlingsshowedthehighes

7、tfleshweight，whilethosesoakedinpHlevel8．0showedtheheaviestdryseedlingweight．IConclusion】TileoptimalpHvalueforsoakingmungbeanseedsshouldbebetween7．0—7．5toachievethebestmungbeangerminationandseedlinggrowthinHezhoudistrictsofCuangxi．Keywor