氮、磷、钾营养对白肋烟叶绿体色素、化学成分的影响及相关性分析

Relative analysis and effect of N, P and K on burley tobacco chlorophyll and chemical compositions

通过正交试验研究了氮、磷、钾营养对白肋烟叶绿体色素、化学成分的影响。结果表明,施N水平及氮、磷、钾比例与白肋烟叶绿体色素、内在化学成分关系密切。叶绿体色素含量与施N水平,N:P2O5和N:K2O比例呈正相关,三要素对叶绿素、叶绿素a、叶绿素b及类胡萝卜素的影响作用为N>K>P。施N水平和N:P2O5、N:K2O比例与总氮、烟碱、蛋白质含量呈正相关,而与总糖、还原糖、施木克值、糖/碱、氮/碱呈负相关,三要素对总糖的影响为N>P>K,而对还原糖、烟碱、总氮、蛋白质的影响是N>K>P。

The effects of N, P and K on burley tobacco chlorophyll and chemical compositions were investigated by orthogonal test. The results showed that the ratios of N to P2O5 and N to K2O were closely correlated with the chlorophyll （chl） and chemical compositions of burley tobacco. The effects of N, P and K on chl, chla, chlb and carotinoid were N〉K〉P. N, N： P2O5 and N： K2O were positively correlated with the contents of total nitrogen, nicotine and protein, and negatively correlated with total sugar, reducing sugar, Schmuck＇s value, sugar/ nicotine and nitrogen/nicotine. The effects of N, P and K on total sugar were N〉P〉K, and on reducing sugar, nicotine and protein were N〉K〉P.