Effect of foliar selenium supplementation on selenium content in Hongmeiren
Selenium is one of the essential trace elements in the human body.The production of selenium rich fruits in selenium poor areas is an important goal of functional fruit production.Nevertheless,most inorganic selenium species are harmful to human health,and the method of producing safe selenium rich fruits has become crucial.Zhejiang Province is a major citrus production area and also a selenium poor area,so selenium rich Hongmeiren has huge market potential.This experiment used foliar spraying to supplement selenium,studied the effect of foliar selenium supplementation on the selenium content of Hongmeiren fruit,and evaluated whether the selenium content of the fruit was safe.The results showed that spraying sodium selenite solution could increase the selenium content of Hongmeiren fruit,spraying plant selenium nutrient solution on the leaf every 15 days(once,twice and three times),and continuously spraying three times to obtain the highest selenium content in the fruit.