烟草整个生育阶段需要多种营养元素,除碳、氢、氧外,最多的是氮素、磷素、钾素。据测定:烤烟植株一般含氮3%左右,含磷0.5%左右,含钾3%左右。生产100斤烤烟需要氮素2.5—3.5斤,磷素1.5斤,钾素5—6.5斤。氮、磷、钾肥的用量、配合比例直接影响烤烟产量、品质。一、氮肥用量与烤烟产质关系氮肥施用过多,烟株表现叶色深绿,叶片肥厚,株高茎粗,组织粗糙,落黄差,成熟晚,烤后色泽暗淡,吃味辛辣,香气少,杂气 Tobacco throughout the growing stage requires a variety of nutrients, in addition to carbon, hydrogen, oxygen, the most is nitrogen, phosphorus, potassium. It is determined: Flue-cured tobacco plants generally contain about 3% nitrogen, phosphorus content of about 0.5%, potassium 3%. Production of 100 kg of tobacco requires nitrogen 2.5-3.5 kg, 1.5 kg of phosphorus, potassium 5-6.5 kg. Nitrogen, phosphorus and potassium fertilizer, with a direct impact on the proportion of tobacco production, quality. First, the amount of nitrogen fertilizer and the relationship between the quality of flue-cured tobacco Nitrogen fertilizer too much, the performance of tobacco leaves dark green, leaf hypertrophy, stem height, coarse tissue, poor yellow, mature late, dark color after baking, eating spicy, aroma Less, gas