Effects of NAA Application After Topping on Accumulation and Distribution of Potassium in Flue-cured Tobacco

The effects of NAA blotter insertion on accumulation and distribution of potassium in flue-cured tobacco were studied with pot culture.The results showed that the accumulation amount of potassium in tobacco plant treated with A(0.22%NAA) and B(0.22%NAA+synergist) averaged 1.06g and 1.42g per plant higher than that in CK,potassium content in upper leaves increased by 0.39 and 0.06 percentage points and in cutters by 0.32 and 1.17 percentage points,respectively.Comparing with CK,the accumulation amount of potassium in A and B treated tobacco leaves increased averagely by 0.49g and 0.98g per plant,the potassium distribution proportion in tobacco leaf increased by 0.25 and 4.57 percentage points,respectively.NAA could improve the potassium accumulation in tobacco plants and change the potassium distribution among different tobacco apparatus.The potassium distribution proportion and content in tobacco leaf were increased by NAA application.