土壤施硒对萝卜吸收转化硒及品质的影响

EFFECT OF SELENIUM APPLICATION IN SOIL ON ABSORPTION AND TRANSFORMATION OF SELENIUM IN AND QUALITY OF RADISH

盆栽试验结果表明,土壤施硒(Se)可显著提高萝卜体内的含Se量;外源Se增加了萝卜的有机Se含量,但随着土壤施Se量的增加,有机Se转化率却逐渐下降,表明土壤施Se过高不利于有机Se的转化;土壤施Se对萝卜品质有较大影响,增加了必需氨基酸总量,却降低了氨基酸总量以及粗蛋白、粗脂肪和可溶糖含量,并明显抑制了对Cu、Zn的吸收。

The results of pot experiments showed that application of Selenium in soil significantly increased Selenium content of radish, and content of organic Selenium in radish root as well. However, higher content of Selenium in soil would decrease the transformation percentage of organic Selenium. It was also indicated that addition of Selenium affected quality of the radish, by increasing the total content of the essential amino acids, but decreasing the total content of amino acids, crude protein, fat and soluble saccharide in radish root, and simultaneously, inhibiting absorption of Cu and Zn.