喷硒对枸杞中微量元素积累的影响

摘要

Objective] The aim was to systematically study effects of selenium application on accumulation of trace elements of Lycium barba-rum,and promote safety production of selenium-rich Lycium barbarum.[ Method] Using Lycium barbarum variety Ningqi No.1 as the material, spraying sodium selenite through leaf,trace elements of Lycium barbarum were determined,effects of selenium application on accumulation of trace elements were studied.[Result] The results showed that:in the 0-500.0 mg/kg selenium content significantly increased,spraying concentration and times were the key factors influencing the production of selenium-rich Lycium barbarum.Content of Fe,Zn,Mn,Cu presented curve change under different selenium concentration.[Conclusion] In the suitable range of concentration,with increasing concentration of selenium,trace ele-ments of Lycium barbarum increased gradually,over tolerance limits appeared downtrend,spraying selenium was related with trace elements of Ly-cium barbarum.%[目的]研究液面喷施硒对宁夏枸杞中微量元素积累的影响，促进富硒枸杞安全生产。[方法]以宁杞1号为供试材料，在枸杞叶面喷施亚硒酸钠，对枸杞中微量元素含量进行相关检测，研究喷硒对枸杞微量元素积累的影响。[结果]设定的0～500 mg／kg喷硒浓度范围，枸杞含硒量均有显著提高，喷施浓度及次数是影响枸杞硒含量的关键因素；铁、锌、锰、铜在硒不同施用量作用下，含量均呈现曲线变化。[结论]在一定浓度范围内，随着喷施浓度的增加，枸杞各微量元素含量在逐渐增加，超过耐受限量时呈下降趋势。