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1、第35卷第3期生态学报Vol.35,No.32015年2月ACTAECOLOGICASINICAFeb.,2015DOI:10.5846/stxb201304130697殷金岩,耿增超,李致颖,李慧娟.硒肥对马铃薯硒素吸收、转化及产量、品质的影响.生态学报,2015,35(3):823鄄829.YinJY,GengZC,LiZY,LiHJ.Effectsofthreefertilizersonuptake,transformation,yieldandqualityofpotatoes.ActaEcologicaSinica,2015,35(3):823鄄829.硒肥对马
2、铃薯硒素吸收、转化及产量、品质的影响*殷金岩,耿增超,李致颖,李慧娟西北农林科技大学资源环境学院农业部西北植物营养与农业环境重点实验室,杨凌摇712100摘要:通过设对照(CK)、保水缓释硒肥(W)、生物炭基硒肥(C)、硒酸钠硒肥(S)4个处理来研究不同硒肥对马铃薯(品种为早大白)硒素吸收、转化及产量、品质的影响。结果表明:各处理马铃薯各器官硒含量在生育期内总体上呈下降趋势,马铃薯各器官的硒含量呈现:苗期根>茎>叶片;成熟期叶片>茎>块茎的特点;随着硒肥用量的增加,W处理下的总硒、无机硒、有机硒含量呈增大趋势,产量、有机硒转化率、粗蛋白、还原糖和Vc呈先升高后降低的趋势;
3、C处理和S处理下,马铃薯以上各指标均2呈先升高后降低的趋势,在低施硒量(0.126kg/hm)时,3种硒肥显著降低了马铃薯块茎淀粉含量,之后随着施硒量的增加淀粉2含量变化不显著;与对照相比,3种硒肥在适宜施硒量(0.379kg/hm)时,马铃薯产量提高了4.87%—5.44%,粗蛋白含量增加了12.18%—20.03%,还原糖提高了6.45%—12.90%,Vc含量提高-0.54%—3.11%,有机硒转化率增加13.00%—15.10%,淀粉含量增加了-0.73%—1.12%;综合考虑3种硒肥对马铃薯含硒量、产量、品质的影响,W处理最佳,C处理次之,S处理最差。关键词:马
4、铃薯;缓释硒肥;吸收转化;产量;品质Effectsofthreefertilizersonuptake,transformation,yieldandqualityofpotatoes*YINJinyan,GENGZengchao,LIZhiying,LIHuijuanKeyLaboratoryofPlantNutritionandAgri鄄environmentinNorthwestChina,MinistryofAgriculture,CollegeofResourcesandEnvironment,NorthwestAgricutureandForestryUniv
5、ersity,Yangling712100,ChinaAbstract:Afieldexperimentwasconductedtostudytheuptakeandtransformationofdifferentseleniumfertilizersbypotato(cv.ZaoDabai)andtheeffectsofthesefertilizersonpotatoyieldandquality.Theexperimentincludedfourfertilizertreatments:sodiumselenatefertilizer(S),biologicalca
6、rbonseleniumfertilizer(C),slow鄄release,waterabsorbentseleniumfertilizer(W)andanunfertilizedcontrol(CK).Resultsindicatedthatplantseleniumconcentrationsgraduallydecreasedaspotatoplantsmatured.Seleniumconcentrationsindifferentpotatoorgansgenerallydecreasedintheorderroots>stems>leaves.However
7、,bymaturity,seleniumconcentrationsdecreasedintheorderleaves>stems>tubers.Wtreatmentsinitiallyincreasedseleniumcontents,inorganicSeandorganicSeofpotatoes,however,yield,theorganicSetransformationrate,crudeprotein,thereducingsugarandVcofpotatoesinitiallyincreasedandthe
