7Ross M W. Agriculture: The real nexus for enhancing bioavailable micronutrients in food crops [J]. Journal of Trace Elements in Medicine, 2005,18:299-307.
8Umaly R C, Poel L W. Effects of iodine in various formulations on the growth of barley and pea plants in nutrient solution culture [J]. Ann Bot, 1971,35:127-131.
9Kaori G, Hideyuki Y, Toru M, et al. Effects of iodine on growth and Iodine ansorption of hydroponically grown tomato and spinach [J]. Hort, Res (Japan), 2007, 6(2): 223-227.