追施不同浓度锌对烟叶吸收砷铅镉的影响  

Influence of Topdressing Different Concentrations of Zinc on Tobacco Leaves Absorption of As, Pb, Cd

作　　者：赵阿娟[1,2] 杨虹琦[1] 刘斌[1] 段美珍 李晓忠 汤若云 

机构地区：[1]湖南农业大学烟草科学与健康重点实验室,长沙410128 [2]湖南省烟草公司长沙市公司,长沙410011 [3]湖南省烟草质量监督监测站,长沙410004

出　　处：《中国农学通报》2015年第4期45-49,共5页Chinese Agricultural Science Bulletin

基　　金：湖南省烟草专卖局重大专项资助项目"湖南生态安全烟叶研究与开发"(合同号11-14Aa03)

摘　　要：为探索烤烟大田生育期抑制土壤重金属吸收的有效途径,选取含重金属较高的旱地红壤进行追施不同浓度硫酸锌的大田试验。研究结果表明,追施硫酸锌对烟叶吸收重金属砷和铅的影响很小,但对烟叶吸收镉有明显的抑制作用,而且追施硫酸锌浓度在6 g/L以上,上部叶镉含量可降低50%以上,中下部叶镉含量可降低40%以上。追施硫酸锌浓度超过12 g/L将引起烟叶硫酸锌含量大幅度升高,进而导致烟株锌中毒,并且烟株生长受到严重影响。In order to explore effective ways to inhibit absorption of soil heavy metals in flue-cured tobaccogrowing period in the field, field experiment of topdressing different concentrations of zinc sulfate was carriedout in tobacco fields of the dry red soil. The results showed that topdressing of different concentrations of zincsulfate had very small effect on tobacco leaves absorption of arsenic and lead, but exhibited obviouslyinhibition on tobacco leaves absorption of cadmium, topdressing zinc sulfate concentration more than 6 g/Lcould reduce cadmium content by 50% in upper tobacco leaves and by 40% in middle and lower tobaccoleaves. If topdressing zinc sulfate concentration was more than 12 g/L, the zinc content of tobacco leaves mightincrease greatly and led to zinc poisoning as well as serious impact on growth of tobacco plant.

关 键 词：锌 烟叶 砷 铅 镉 吸收 

分 类 号：S519[农业科学—作物学]