留叶数与留叶方式对湘烟7号产质量的影响

Effects of the Remained Leaf Number and the Leaf-Remaining Mode on the Yield and Quality of Xiangyan NO.7

为了探明湘烟7号的最佳留叶数和留叶方式,在永顺烟区开展了大田试验,研究不同留叶数和留叶方式对湘烟7号中部叶物理特性、化学成分及协调性和经济性状的影响。结果表明:在物理特性方面,当留叶数为18片、留叶方式为打去1片顶叶时,湘烟7号中部叶的物理特性表现最优;在化学成分及协调性方面,均以留叶数为20片、打去1片顶叶时表现最佳;在经济性状方面,留叶数为18片、留叶方式为打去3片顶叶的处理同时具有最高的产量、均价和产值,留叶数为22片、留叶方式为打去3片顶叶的处理则具有最高的上等烟比例,而留叶数为20片、留叶方式为打去1片顶叶的处理产量、产值均为第2位。综合以上结果,笔者认为在永顺烟区湘烟7号的最佳留叶数为20片,最佳留叶方式为打去1片顶叶,在该处理下各项性状表现较优,产质量最佳。

A field experiment was carried out in Yongshun tobacco area to study the effects of different remained numbers and remaining methods of leaves on the physical properties,chemical composition and harmony,and economic traits of Xiangyan No.7 middle leaves.The results showed that when remained 18 leaves with one top leaf removal,Xiangyan No.7 presented the best physical properties of middle leaves;when remained 20 leaves with one top leaf removal,it presented the best chemical composition and harmony,meanwhile its yield and output value ranked the second of all the treatments;when remained 18 leaves with three top leaves removal,it presented the highest yield,average price and output value;when remained 22 leaves with three top leaves removal,it generated the highest proportion of premium tobacco.Comprehensively,for Xiangyan No.7 in Yongshun tobacco region,the optimum number of leaves remaind is 20 leaves,and the optimum leaf-remaining mode is removing one top leaf,under which it performs well in addition to high quality and yield.