CAJ | 학술논문

为揭示烤烟对Se（Ⅳ）的吸收利用规律，运用养分吸收动力学原理并采用水培法研究了不同pH、陪伴离子、抑制剂条件下烤烟品种云烟87和K326对Se（Ⅳ）的吸收动力学特征。结果表明：①在中低硒水平下，K326对Se（Ⅳ）的吸收积累速率和亲和力均高于云烟87，K326更适应于低硒水平下的养分吸收。②在不同pH条件下，弱酸及中性条件更有利于烤烟对Se（Ⅳ）的吸收累积，碱性条件则降低了烤烟对Se （Ⅳ）的亲和力。③SO42-和PO43-等陪伴离子可抑制烤烟对Se（Ⅳ）的吸收积累速率，降低烤烟对Se（Ⅳ）的亲和力，以PO43-对烤烟吸收Se（Ⅳ）的抑制性更强。④解偶联代谢抑制剂（CCCP）和钙离子通道抑制剂（氯化镧，LaCl3）均可抑制烤烟对Se（Ⅳ）的吸收，以CCCP对Se（Ⅳ）的抑制作用更强。
위게시고연대Se（Ⅳ）적흡수이용규률，운용양분흡수동역학원리병채용수배법연구료불동pH、배반리자、억제제조건하고연품충운연87화K326대Se（Ⅳ）적흡수동역학특정。결과표명：①재중저서수평하，K326대Se（Ⅳ）적흡수적루속솔화친화력균고우운연87，K326경괄응우저서수평하적양분흡수。②재불동pH조건하，약산급중성조건경유리우고연대Se（Ⅳ）적흡수루적，감성조건칙강저료고연대Se （Ⅳ）적친화력。③SO42-화PO43-등배반리자가억제고연대Se（Ⅳ）적흡수적루속솔，강저고연대Se（Ⅳ）적친화력，이PO43-대고연흡수Se（Ⅳ）적억제성경강。④해우련대사억제제（CCCP）화개리자통도억제제（록화란，LaCl3）균가억제고연대Se（Ⅳ）적흡수，이CCCP대Se（Ⅳ）적억제작용경강。
In order to reveal the Se (Ⅳ) absorption and utilization rules of flue-cured tobacco, hydroponic experiments were carried out to study the kinetics characteristics of Se (Ⅳ) absorption of flue-cured tobacco cv. K326 and cv. Yunyan87, at different pH, accompanying ions and inhibitors by referring to the principles of nutrient absorption kinetics. The results indicated that: 1) At low Se (Ⅳ) level (100 g/L), the absorption and accumulation rate and affinity of K326 to Se (Ⅳ) was higher than those of Yunyan87. K326 was more adaptable to nutrient absorption at a low Se (Ⅳ) level. 2) Weak acidic or neutral condition (pH 5-7) facilitated to Se (Ⅳ) absorption and accumulation, while an alkaline condition did not. 3) Accompanying ions, such as SO42- and PO43-, inhibited the absorption and accumulation rate and decreased the affinity of flue-cured tobacco to Se (Ⅳ), especially PO43-. 4) Both uncoupling metabolic inhibitor (CCCP) and Ca2+ channel inhibitor (LaCl3) inhibited Se (Ⅳ) absorption of flue-cured tobacco, especially CCCP.