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当前位置: 首页 > 文章 > 赤霉素(GA_3)喷施时期对烤烟上部叶生长及产质量的影响 安徽农业科学 2018,46 (9) 45-48+93
Position: Home > Articles > Effects of Gibberellin (GA_3) Spraying Time on the Growth,Yield and Quality of Tobacco Upper Leaves Journal of Anhui Agricultural Sciences 2018,46 (9) 45-48+93

赤霉素(GA_3)喷施时期对烤烟上部叶生长及产质量的影响

作  者：
卜令铎;计思贵;李江舟;张立猛;田云伟;罗永寿
单  位：
云南省烟草公司玉溪市公司
关键词：
烤烟;上部叶;开片;赤霉素;喷施时期
摘  要：
[目的]明确赤霉素不同喷施时期对烤烟上部叶开片的影响,进一步完善烤烟上部叶田间调控关键技术。[方法]采用田间试验,以喷施清水为对照(CK),设打顶后0 d(打顶当天)、1、2、3、4、6、8、10 d,共8个喷施时期处理,分析上部叶农艺性状、经济性状及化学成分的变化。[结果]相比各喷施清水对照,烤烟打顶3 d内喷施赤霉素均可有效促进上部叶开片,烟株上部叶面积和叶重增幅随喷施时间后移先升后降,各叶位增幅均以打顶后2~3 d喷施赤霉素处理最大。打顶后2 d喷施赤霉素,上部1~6叶平均叶面积和叶重增幅分别为24.8%和24.4%,上等烟比例、上等烟产量、总产量和产值分别提高2.7%、11.49%、7.24%和11.27%;烟碱降幅和总钾增幅最大,化学成分最为协调。[结论]在打顶后2 d喷施赤霉素最有利于烤烟上部叶开片和产质量的提高。根据天气情况,打顶后3 d内合理喷施赤霉素可有效避免降雨的影响,这对烤烟上部叶的有效调控具有实际意义。
译  名：
Effects of Gibberellin (GA_3) Spraying Time on the Growth,Yield and Quality of Tobacco Upper Leaves
作  者：
BU Ling-duo;JI Si-gui;LI Jiang-zhou;Yuxi Branch of Yunnan Tobacco Company;
关键词：
Flue-cured tobacco;;Upper leaves;;Expansion;;Gibberellin(GA3);;Spraying time
摘  要：
[Objective]To study the effects of spraying times of gibberellin( GA_3) on the growth of tobacco upper leaves,and to further perfect the key regulation technology for tobacco upper leaves in field.[Method]Field test was carried out. A total of eight spraying treatments were designed,including clean water( CK),0,1,2,3,4,6,8 and 10 days after topping. The changes of agronomic characters,economic characters and chemical components of upper leaves were analyzed.[Result] Compared with the controls,spraying GA_3 from 0 to 3 d after topping could effectively promote the leaf expansion of tobacco upper leaves. Leaf area and leaf weight firstly enhanced and then reduced as the spraying time prolonged. The increasing rate of each leaves reached the maximum at 2-3 d after topping. Spraying GA_3 on 2 d after topping,the increasing rates of average leaf area and leaf weight of upper 1-6 leaves were 24. 8% and 24. 4%,respectively. And the proportion and yield of first-class tobacco,the total yield and the output value enhanced by 2. 7%,11. 49%,7. 24% and 11. 27%,respectively; the decreasing rate of nicotine and the increasing rate of total potassium were the maximum,and the chemical components were the most coordinate.[Conclusion]Spraying GA_3 on 2 d after topping was the most beneficial to promote the expansion,yield,and quality of tobacco upper leaves. Based on the weather conditions,spraying GA_3 from 0 to 3 d after topping could effectively avoid the influence of rainfall,which was of practical significance to effective regulating the tobacco upper leaves.

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