Effects of Plant Growth Regulator on Absorption,Circulation and Contents of Potassium in Flue-cured Tobacco  

植物生长调节剂对烤烟钾吸收和循环的影响(英文)

作　　者：沈方科[1] 韦忠 王蕾[1,3] 尹永强 潘炜玲 顾明华[1] 

机构地区：[1]广西大学农学院,广西南宁530005 [2]广西壮族自治区烟草公司河池市公司,广西河池547000 [3]贺州市农产品质量安全检测中心,广西贺州542800

出　　处：《Agricultural Science & Technology》2011年第12期1877-1880,1982,共5页农业科学与技术（英文版）

基　　金：Supported by program from Tobacco Monopoly Bureau of Guangxi Zhuang Nationality Autonomous Region(Research and Demonstration of Comprehensive Technique for Enhancing the Absorption and Accumulation of Potassium in Flue-cured Tobacco);Science and Research Fund from Guangxi University(x071057);Innovation Project of Guangxi Graduate Education(2008105930903M012)~~

摘　　要：[Objective] This study was to investigate the effects of plant growth regulator on accumulation and circulation of potassium in flue-cured tobacco.[Methods] Hydroponics experiment was adopted to study the effects of plant growth regulator（NAA,GA3,BR） on accumulation and circulation of potassium in flue-cured tobacco.[Results] The BR treatment increased the absorption of potassium,calcium and magnesium in flue-cured tobacco,reduced the potassium emission from the root,enhanced the accumulation and contents and promoted the circulation of potassium in the tobacco plants.There was no statistical difference between the NAA and GA3 treatment.And BR treatment was 0.52%,0.30%,0.28% higher than NAA treatment in enhancing potassium content in tobacco plants at 2,7,12 d after topping.In a word,the results showed that BR treatment was the most.[Conclusion] BR treatment could effectively enhance potassium content in tobacco plants after topping.[目的]研究植物生长调节剂对烤烟钾累积与循环的影响[方法]通过设置3种植物生长调节剂处理(NAA、GA和BR)的水培试验。[结果]植物生长调节剂BR对烤烟钾吸收和循环产生了一定的影响。在本试验条件下,BR不仅能提高烤烟对钾、钙、镁的吸收,还降低了根系钾素的外排量,提高了钾在体内的累积量,使烟株的钾含量增高,增强了钾素循环。NAA和GA3处理的钾含量相差不大,但BR在打顶后2、7、12d分别比NAA处理的韧皮部伤流液钾含量高出0.52%、0.30%、0.28%。[结论]打顶后BR处理可有效的提高烟草植株钾含量。

关 键 词：Flue-cured tobacco Absorption of potassium Potassium circulation Plant growth regulator 

分 类 号：S572[农业科学—烟草工业]