【摘要】 采用盆栽试验的方法，进行不同钾素用量试验，研究不同营养条件下烟叶对钾肥的吸收与利用，研究烟叶产量与钾肥不同用量的关系。试验表明：不同施钾量处理的烟叶干物质产量间差异不显著。各处理对烟叶钾含量的影响有显著的作用，增施氮肥后对烟叶钾含量的影响不显著。烤烟对钾素的吸收表现出奢侈吸收现象，烟叶最高含钾量的临界浓度很高，在Ｎ：Ｋ２Ｏ＝１：５的试验条件下，烟叶钾含量仍在增加。在提高烟叶含钾量的技术措施中，不能盲目提倡增加钾肥用量。更多还原

【Abstract】 The effects of applying rates of potassium fertilizer on the K contents and yields of the flue-cured tobacco were studied by pot experiment. The results indicated that effect of the applying rates of potassium fertilizer on the yields of the tobacco leaves is not significant.The more the applied potassium fertilizer,the more the K content is in the tobacco leaves.This response is very significant.But the potassium rates in relation to the K contents in the leaves is not linear ,which could be fitted by nonlinear regression equations,The application rates of potassium fertilizer should notbe increased blindly in the tobacco production.更多还原