不同相伴阴离子钾肥对烤烟光合特性、钾含量及化学成分的影响

The effects of different potassium fertilizer on potassium content and photosynthetic characteristics in flue-cured tobacco leaves

研究了 4种相伴离子不同的钾肥对烤烟生长、光合特性和钾含量的影响 ,不同形态钾素营养相比较 ,植株高度 ,叶片叶绿素含量 (Chl)、气孔导度 (Gs)、光合速率 (Pn)、均以柠檬酸钾 (L- K)处理最高 ,硝酸钾 (N- K)处理次之 ,草酸钾 (C- K)处理较低。L- K使叶片胞间 CO2 浓度 (C1 )降低 ,表明 CO2 在叶肉细胞液相中的传导能力可能对不同钾肥形态下的光合作用有重要影响 ,不同钾肥品种的烟叶中钾含量 ,特别是有机钾含量从高到低的顺序为 L- K>N- K>C- K>S- K。经 L-

In four different potassium treatments, the chlorophy II content photosynthetic rate(Pn), mesophyll conductance of leaves were the highest in the L-K treatment than were in the N-K and the lowest were in the S-K and C-K treatments Potassium reduced the imtercellular CO\-2 concentrotion of (Ci) conductivity of CO\-2 in liquid part of mesophyll cell having probably important influence on photosynthesis of leaves \;In different potassium treatments L-K increase the content of potassium and of orgenic potassium The ratio of sugar and nicotine, nitrogen and nicotine were coordinated well to quality by the L-K and N-K