%0 Journal Article
%T 农药CuSO4处理对空心菜生长及营养品质的影响
%A 王瑞聪
%A 杨颜颜
%A 孙林华
%A 杜建梅
%A 葛峰
%A 陆长梅
%J 南京师范大学学报(自然科学版)
%D 2015
%X 随着人们对食品安全关注度的增加，具有无公害、不产生抗药性等特点的铜制剂正被大量应用于有机农业生产中.铜制剂的大量施用是否真对食品品质无害值得关注.本文以空心菜的种子和幼苗为材料，分析了CuSO4处理下种子萌发和幼苗生长、品质等的变化.结果显示，≤1mMCuSO4的处理对种子萌发率影响不明显，但会降低种子萌发质量；≤9mMCuSO4的处理对空心菜幼苗的生长、光合、产量和营养含量影响不大；CuSO4处理会增加空心菜体内的铜积累，并将铜优先积累于根部；各处理组空心菜茎叶铜含量不超标，但≥3mMCuSO4处理将会导致根部铜含量超标；CuSO4处理降低了空心菜体内的硝酸还原酶活性，促使硝酸盐在空心菜体内累积，并达到重度污染水平，降低了蔬菜品质，提高了人类的患癌风险.</br>Withtheincreaseoffocusonfoodsafety，copperagentswhichhavethecharacteristicsofpollution-free，noresistanceetc.arewidelyusedinorganicagriculturalproduction.Whethertheextensiveapplicationofcopperagentswillbringinfluenceontheyieldandqualityoffoodsornotisnoteworthy.Toinspectthisinfluence，thechangesofseedgermination，seedlinggrowthandvegetablequalityofIpomoeaaquaticunderCuSO4processingwillbeassayedinthispaper.ResultsshowedthatCuSO4treatmentnotover1mMhadnoobviouseffectonseedgerminationrate，butwouldreduceseedgerminationquality.CuSO4treatmentnotover9mMhadnoobviouseffectonseedlinggrowth，photosynthesis，yieldandnutrientcontent.CuSO4treatmentwouldincreasecopperaccumulationinI.aquaticseedlings，andcopperwouldaccumulatepreferentiallyinroots.CoppercontentinleavesandstemsinthetreatedI.aquaticseedlingswouldnotexceedthenationalstandard，butitwouldexceedthestandardinrootswhenCuSO4wasnotlessthan3mM.CuSO4treatmentwouldreducethenitratereductaseactivitieswhichledtothenitrateaccumulationtotheseverepollutionlevelinI.aquaticseedlings.Thiswouldreducethevegetablequalityandenhancethehumancancerrisk
%K CuSO4
%K 空心菜
%K 生长
%K 品质&lt
%K /br&gt
%K CuSO4
%K Ipomoeaaquatic
%K growth
%K nutritionquality
%U http://njsfdxzrb.paperonce.org/oa/darticle.aspx?type=view&id=201503005