镁对烤烟产量、质量、几个生理指标的影响

 在酸性红壤条件下,通过土壤局部控制设计方法,研究MgSO₄不同施用量对烤烟产量、品质、光合色素、光合强度、蒸腾速率的影响.结果指出:在供试土壤条件下,补充营养元素镁,可以提高烟叶产量,增加光合色素(尤其值得注意的是增加了烟叶香气物质类胡萝卜素的含量),增强了光合强度和蒸腾速率.镁与烟叶的外观质量和内在化学成份有关.镁肥的补充不是越多越好.两年研究结果一致表明,每亩施5KgMgSO₄可以使烤烟达到优质适产水平.过多施用会导致总糖含量过高,烟碱和蛋白质含量过低,品质变劣.

Effect of Magnesium to Output qualities and some physiological Indices of Flued-tobacco

In ned sarth using local design methal to study the effect of varied amount of magnescicm-suefate to tobacco output,qualities,cellular pigment,photosythetic intencity and transpirating rate.Result showed in red earth the suppemen of magnesium-sulfate is enable to raise the tobacco output and photosythetic pigment(especially the content of carotinoid-the aromatic compound of tobscco)strenthening photosythetic intensity and transpirating rate. Magnesium is relatid with the external gualities and intesnal chemical content of tobacco. The suppenent of magnesium fertilizer can't be the more the better through two yexrs research confirned a fine guality and suitable yield of tobacco can be obtnined by applying 5 Kg lma of magnesium-sulfate however an excessive application of magnesium-sulfate could bring about an over total sugar content a lowest nicotine and protein content and the worse tobacco puality.