不同种植密度对烤烟产质量及叶绿素含量的影响

Effects of different planting density on yield,quality and the chlorophyll content of flue-cured tobacco

以云烟85为材料,研究了不同种植密度对烤烟农艺性状、光合色素、产量、产值和质量的影响.结果表明:种植密度在16 680～22 230株/hm2时,随着密度的增加,叶面积系数增加,烟叶中叶绿素含量下降,烤后下中部烟叶单叶重较高,产量和产值越高,均价、上中等烟比例也较高,总糖、还原糖含量增加,烟碱、总氮、蛋白质含量下降.种植密度22 230株/hm2时效果最好,能够获得较高的产量和产值及较协调的内在化学成分.

A field experiment was carried out to study the effects of different planting density on agronomic characters, photosynthetic pigments, yield, the production value and quality of Yunyan85. The results showed： Between the 16 680 plants/hm^2 and 22 230 plants/hm^2, with the increase of planting density, leaf area coefficent of the group increased, the chlorophyll content decreased, and the leaf weight of the lugs was relatively high, the production value and yield increased, the average price and proportion of fair class leaf were also relatively high, the content of total sugar and reducing sugar increased, the content of nicotine, total nitrogen and protein decreased. Under this experimental range, the treatment of 22 230 plants/hm^2 had the higher yield and production value, the chemical components were more harmonious.