摘要
为研究烤烟生产适宜的施氮量和种植密度,在田间对烟苗团棵期后实施减少10%施氮量和减小种植密度等处理。结果表明:适当减少施肥量能有效降低上部烟叶厚度,使烟叶更容易分层落黄,能显著提高烟叶的均价、上等烟比例和中上等烟比例,同时提高上部6片烟叶上等烟叶比例,内在化学成分比例更加协调,叶片结构更加疏松;而降低大田种植密度后,上部烟叶厚度有所增加,虽然提高了上部烟叶质量,但由于单位面积株数减少,导致产值降低,同时烤后烟叶烟碱含量有所升高,钾含量降低,烟叶结构稍密。当地条件下,以16 500株/hm^2+减少10%施氮量的处理最佳。
In order to study the suitable nitrogen application rate and planting density of flue-cured tobacco production,10%nitrogen treatments and a reduction of planting density were carried out in the field after tobacco seedling resettling stage.The results show that the proper reduction of fertilization can effectively reduce the thickness of the upper tobacco leaves,significantly increase the average price of tobacco leaves and the proportion of upper and middle class cigarettes,while improving the upper6tobacco leaves of fine tobacco ratio,the intrinsic chemical composition of a more coordinated ratio,leaf structure became loose;the lower field planting density,thickness of upper leaves increased,while improving the quality of upper leaves,but the number per unit area is reduced,the output value will lead to decreased,while nicotine content in tobacco leaves increased,potassium content decreased,and leaves structure slightly dense.Under local conditions,the treatment of more than16500strains/hm2to reduce the amount of nitrogen by10%is the best.
作者
向鹏华
黄银章
单雪华
范才银
XIANG Peng-hua;HUANG Yin-zhang;SHAN Xue-hua;FAN Cai-yin(Hunan Hengyang Tobacco Companies, Hengyang 421001, PRC)
出处
《湖南农业科学》
2018年第1期18-20,24,共4页
Hunan Agricultural Sciences
基金
衡阳市烟草公司科技项目(2015002)
关键词
烤烟
施肥
密度
flue-cured tobacco
fertilization
density
