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随着施氮量的增加,云烟87的大田生育期有所推迟、烟叶单叶重、单位叶面积呈增加趋势;适量增加施氮量有利于烟叶开片度的增大,特别是顶叶开片度;云烟87烟叶总氮和烟碱含量受施氮量影响最大,二者随施氮量的增加呈增加趋势;烟叶糖碱比与施氮量呈显著负相关;合理施氮能提高烟叶的产质量。施氮量为105kg/hm2时,云烟87具有最佳产质量。
With the increase of N application rate, the growth period of Yunyan87 was delayed, and the single leaf weight and the unit leaf area of tobacco leaves tended to increase. Increasing the amount of nitrogen application was beneficial to the increase of leaf opening degree, especially the parietal lobe The degrees of nitrogen and nicotine of tobacco leaves were the greatest, and both of them were increased with the increase of nitrogen rate. There was a significant negative correlation between the ratio of sugar and nicotine of tobacco leaves and the amount of nitrogen application. Production quality. When the nitrogen application rate was 105kg / hm2, Yunyan87 had the best quality.