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1、朱英华等烤烟硫营养对钙吸收与积累的影响59烤烟硫营养对钙吸收与积累的影响11213,4朱英华,周可金,张国,吴社兰,屠乃美1安徽农业大学农学院,合肥市长江西路130号230036;2安徽皖南烟草有限责任公司,宣城市鳌峰中路72号242000;3湖南农业大学农学院,长沙市芙蓉区农大路1号410128;4中国烟草中南农业试验站,长沙市芙蓉区农大路1号410128摘要:采用液培试验,研究了不同硫浓度下烤烟根、茎、叶对钙的吸收与积累规律。结果表明,硫浓度在0~8mmol/L试验范围内,烤烟根、茎和叶片中钙含量随硫
2、浓度增加呈显著或极显著降低。硫浓度在2~8mmol/L范围内,烤烟根、茎、叶片对钙吸收速率和积累量随硫浓度增加而大幅度降低。0mmol/L处理烤烟根系对钙吸收速率低于2mmol/L处理,但在团棵和旺长期,0mmol/L处理烤烟叶片对钙吸收速率高于2mmol/L处理的,在旺长后期和成熟期,0mmol/L烤烟茎对钙吸收速率高于2mmol/L处理的。0mmol/L处理烤烟根系钙积累量低于2mmol/L处理的,但其叶片和茎对钙积累量与2mmol/L处理差异不大。由此可见,在液培条件下,无硫或低硫促进了烤烟根、茎、
3、叶对钙的吸收和积累。关键词:烤烟;硫;钙;吸收速率;养分积累doi:10.3969/j.issn.1004-5708.2014.02.009中图分类号:S572.01文献标志码:A文章编号:1004-5708(2014)02-0059-06Effectofsulfurnutritiononaccumulationanduptakeofcalciuminflue-curedtobacco11213,4ZHUYinghua,ZHOUKejin,ZHANGGuo,WUShelan,TUNaimei1Colleg
4、eofAgronomy,AnhuiAgriculturalUniversity,Hefei230036,China;2AnhuiWannanTobaccoLeafCo.,Ltd.,Xuancheng242000,Anhui,China;3CollegeofAgronomy,HunanAgriculturalUniversity,Changsha410128,Hunan,China;4TobaccoAgriculturalExperimentStationofCentralandSouthChina,Cha
5、ngsha410128,Hunan,ChinaAbstract:Ahydroponicsexperimentwascarriedouttoinvestigatecalciumcontent,accumulationanduptakeinroot,stemandleafinflue-curedtobaccounderdifferentsulfurconcentrations.Resultsshowedthatcalciumcontentsinroot,stemandleafwerereducedsignif
6、icantlyorhighlysignificantlyalongwithincreaseofsulfurconcentrationfrom0mmol/Lto8mmol/L.Theuptakerateandaccumulationofcalciuminroot,stemandleafwerereducedalongwithincreaseofsulfurconcentrationfrom2mmol/Lto8mmol/L.Calciumuptakerateinrootunder0mmol/Lsulfurco
7、ncentrationwaslowerthanthatunder2mmol/L.Calciumuptakerateinleafunder0mmol/Lsulfurconcentrationwashigherthanthatunder2mmol/Lfromrosettetofastgrowingstage,whilecalciumuptakerateinstemnder0mmol/Lsulfurconcentrationwashigherthanthatunder2mmol/Lfromfastgrowing
8、tomaturationstage.Calciumaccumulationinrootunder0mmol/Lsulfurconcentrationwaslowerthanthatunder2mmol/L,butnosignificantdifferenceunder0mmol/Land2mmol/Lsulfurconcentrationinstemandleaf.Noorlowersulfurconcentrationprom