周初跃 杜丛中 薛琳

摘要[目的]明确皖南烟区不同留叶数对K326品质的影响，以确定最适宜的留叶数。[方法]以K326为供试材料，留叶数设4个处理，分别为12、14、16、18片，分析各处理对K326农艺性状、经济性状、烟叶外观质量、化学成分、感观质量评价的影响。[结果]随着留叶数的增加，K326株高逐渐增高，节距增大，但茎围、上部叶长、上部叶宽呈现下降的趋势，腰叶以留叶16片时最大；产量以留叶18片处理最高，产值、上等烟比例和上中等烟比例以留叶16片处理最高，综合分析以留叶16片经济性状最好；随留叶数的增加，中上部烟叶烟碱、总氮含量降低，还原糖、总糖含量以及糖碱比增高，其余化学成分指标变化均无明显规律；感官质量评价中3个叶位均以留叶16片最佳。[结论]皖南烟区2015年K326留叶数为16片叶时内外在质量总体较好。

关键词皖南烟区；留叶数；K326；品质

中图分类号S572文献标识码A文章编号0517-6611（2016）04-056-03

Effects of Different Remainedleaves on K326 Quality in Wannan Tobaccoplanted Area

ZHOU Chuyue1， DU Congzhong1， XUE Lin2（1. Anhui Cigarette Industrial Co. Ltd.， Hefei， Anhui 230088； 2. Wannan Tobacco Co. Ltd.， Xuancheng， Anhui 242000）

Abstract[Objective] The aim was to study the influence of different remainedleaves on K326 quality in Wannan tobaccoplanted area， meanwhile to define the optimal remained leaves. [Method] There were 4 treatments designed by the randomized block method， which included 12， 14，16，18 treatments. Effects of each treatment on agronomic traits， economic traits， original tobacco apperance quality， chemical components and sensory quality were analyzed. [Result] With the remainedleaves increase， the height and pitch of K326 increased either， but the girth and upper leave declined. The waist leave of 16 remainedleave treatment grew the biggest. The yield per mu of 18 remainedleave treatment showed the best. Based on comprehensive analysis the economic characters of 16 remainedleave treatment showed the best in 4 treatments. Along with the increase of remained leave， the nicotine and total nitrogen declined in tobacco leave， but the total sugar and reducing sugar increased. The other chemical opponents showed unobvious changed trend. The sensor quality of 16 remainedleave treatment performed best in 4 treatments， which were evaluated by the specialist. [Conclusion] The quality of K326 is best in 16 remainedleave treatment in 2015 in Wannan tobaccoplanted area.

Key wordsWannan tobaccoplanted area； Remainedleaves； K326； Quality

烤烟品种适宜留叶数是指在烟株自然叶片数的基础上，通过人为摘除底脚叶和打顶，使烟叶的经济性状和品质达到协调平衡的最佳叶片数。留叶数不同，烟叶的經济性状和品质不同[1-8]，其原因主要是叶片的稀疏程度改变了烟株的田间小气候、养分供给和分配状况。K326品种是目前皖南烟区推广的特色优质烟叶品种，开展不同留叶数对K326品种经济性状及品质等的影响研究，旨在为探索在当地条件下与品种相配套的适宜优质烟叶生产最佳留叶数提供科学依据。

1材料与方法

1.1试验地概况试验安排在安徽省宣城市黄渡乡安徽中烟皖南焦甜香科技示范园进行。……