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七十年代为解决烟叶数量上的产需矛盾,潍坊地区在烤烟生产上曾一度采用高密度、多留叶的栽培技术,加之施肥量过大,种植高产品种,烤烟的质量有所下降,烟叶商品等级结构不适应工业需要。随着这个矛盾的缓和,烟叶质量问题又成了主要矛盾。当前,提高烟叶质量,改善等级结构,已成为烤烟生产上的主攻方向,采取了许多优质适产的措施。在这种情况下,有人担心密度降低、留叶减少后会带来上黄烟比重增加而与卷烟工业又发生不相适应的问题。现就这个问题,谈几点粗浅看法。一、采用低密度、少留叶以后烟叶等级比
Seventies In order to solve the contradiction between production and demand of tobacco leaves, Weifang once used high-density and leaves-retaining cultivation techniques in flue-cured tobacco production. In addition, the fertilizer yield is too large and the quality of flue-cured tobacco is reduced. Hierarchical structure does not meet the needs of industry. With the alleviation of this contradiction, the quality of tobacco has become the main contradiction. At present, raising the quality of tobacco and improving the hierarchical structure have become the main direction of tobacco production, and many measures have been adopted to ensure quality tobacco production. Under such circumstances, some people are worried that the density will decrease, and the problem of the unavailability of leaves after the tobacco industry will increase due to the increase of the proportion of yellow tobacco will be brought. Now on this issue, to talk about a few superficial views. First, the use of low-density, leaves less leaves after the tobacco grade ratio