黔西南烟叶品质分区研究

Regional Planning of Tobacco Leaf Quality in Southwestern Guizhou

为了进行更合理的烟叶生产布局,对黔西南州烟叶品质进行了多年的监测,并对烟叶品质进行了区划。初步提出用总糖和烟碱2个因子作为品质分区指标,共分为3个档次,①高:总糖含量>26%,烟碱含量>2.5%;②中:总糖含量24%～26%,烟碱含量2.3%～2.5%;③低:总糖含量<24%,烟碱含量≤2.3%。根据分区指标,黔西南烟叶可分为3个类型区:高糖低碱区,高糖中碱区,中糖中碱区。黔西南烟叶以高糖中碱区为主,占80%,高糖低碱区占20%,中糖中碱区过去曾经种过烟,目前尚待开发。

To achieve better planning of tobacco production in southwestern Guizhou, authors monitored the tobacco leaf quality for several years, and conducted leaf quality regional planning. The authors proposed total sugar and nicotine contents of leaves as partition index for regional planning, and classified them as three levels： high （ total sugar content 〉 26%, nicotine content 〉 2.5%）, middle （total sugar content 24%～26%, nicotime content 2.3%～2.5%） and low （total sugar content 〈24%, nicotine content 42.3%）. According to these criteria, the tobacco leaf quality of sot, thwestern Guizhou could be classified as three zones： the zone with high sugar and low nicotine contents, the zone with high sugar and middle nicotino contents, and the zone with middle sugar and middle nicotine contents. The fast zone covers 80% of tobacco production area in southwestern Guizhou, the second zone covers 20%, and the last zone had tobacco production years ago and needs to be deveioped for tobacco production.