打顶后施用NAA对烤烟钾素积累及分配的影响
Effects of NAA Application After Topping on Accumulation and Distribution of Potassium in Flue-cured Tobacco
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摘要: 采用盆栽试验,通过插药签方法研究了萘乙酸(NAA)对烤烟钾素积累及分配的影响。结果表明,烤烟打顶后A(0.22%NAA)及B(0.22%NAA+增效剂)药签处理的烟株整株钾素积累量分别比对照(CK)每株平均增多1.06g和1.42g,上部烟叶钾含量分别提高0.39和0.06个百分点,中部烟叶钾含量分别提高0.32和1.17个百分点;A、B药签处理的烟株烟叶中钾素积累量每株比CK平均增多0.49g和0.98g,钾素在烟叶中分配比例分别比CK提高0.25和4.57个百分点。施用NAA不仅提高了烟株的钾素积累量,而且改变了钾素在烟株不同器官中的分配,提高了钾素在烟叶中的分配比例,同时提高了烟叶钾含量。Abstract: 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.
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