Abstract:

The aim of this study was to evaluate the effect of seaweed iodine absorption and accumulation on fruit vegetables in field experiments under two different application techniques (root application and exroot application). The results showed that the iodine in the edible parts of fruit vegetable increased with the increasing iodine addition in soil. The iodine in edible parts of vegetable decreased with the sampling time except soybean. Under two different application techniques (root application and exroot application), root application of iodine was more favorable to iodine accumulation in vegetable, of which the distribution of iodine was showed as: root>leaf>stem>fruit. Whereas with iodine exroot application (spraying to the leaf), the iodine content of leaf was the highest, then was stem, and the iodine accumulation in fruit and root were the minimum in all these tested vegetables．

Key words: seaweed iodine fertilizer, fruit vegetable, iodine accumulation