【作者】 顾明华； 李婷； 邹凯； 韦建玉； 曾祥难； 王政；

【Author】 GU Ming-hua1,LI Ting1,ZOU Kai1,WEI Jian-yu1,2,ZENG Xiang-nan1,2,WANGzheng2(1.Agricultural college of Guangxi University,Nanning 530005,China;2.Guangxi China Tobacco Industry Corporation,Nanning 545005,China)

【机构】 广西大学农学院； 广西中烟工业公司；

【摘要】 研究了不同施钾量对大田烤烟碳代谢和烤烟品质形成的影响。结果表明:适宜地增施钾肥提高了烤烟生长中后期蔗糖转化酶和淀粉酶的活性。烤烟叶片中的碳水化合物含量在移栽后60d(现蕾期)以后开始迅速增加。其中可溶性总糖含量、还原糖含量和淀粉含量在烤烟生长的中后期随着施钾量的增加而增加。钾营养有利于促进烤烟生长后期碳的积累代谢,积累较多的碳水化合物,与品质相关的化学成分趋于协调。更多还原

【Abstract】 This experiment studied the effect of potassium in carbon metabolism and quality of flue-cure tobacco by different potassium(K2O)levels treatment.The main results showed,the activities of invertase and amylase during the middle and later stage of tobacco growth increased with appropriate application of potassium nutrition.The carbohydrate content of leaves increased quickly after transplanting 60 days(squaring stage).The total soluble sugar content,reducing sugar content and starch content of leaves increased with the increasing of potassium levels at the middle and later stage.The carbon accumulation metabolism increased and accumulated more carbohydrate with the increasing of potassium levels at the later stage.The potassium content of leaves increased at the same time.更多还原