Preliminary Study on the Selenium-Enriched Effect of different Selenium Sources on Chinese Chive

The selenium ore powders,selenium-enriched compound fertilizers and Na2SeO3 solutions with different selenium content were applied on 791 strain of Chinese chive,and the effects of different selenium sources on Chinese chive were studied.The results showed that the three kinds of selenium sources increased the selenium content of Chinese chive leaves,and the selenium contents of Chinese chive were 0.144～0.504 mg/kg,higher than the control by 92.0% ～ 572.0% .The selenium content of the leaves which were applied with high level of selenium-rich slag(1 494 mg /kg) was higher than that with low one(392 mg/kg).Basically selenium was increased more with high levels of selenium-rich fertilizer than with low levels of selenium-rich fertilizer,but there were some exceptions,and they might relate to the selenium distribution in selenium-rich fertilizer.Applications of 4 different concentrations of Na2SeO3(100,200,400 and 800 mg/kg)increased selenium contents 3.61～5.72 times in Chinese chive.Among all the applications,the concentrations of 200 mg/kg had the best effect of increasing selenium content of Chinese chive,and the stress phenomenon wasn′t appeared.