不同营养水平对烤烟叶片生长和烟碱、钾的积累研究

Effect of Different Nutrition to Flue-Cured Tobacco Growth and Accumulating of Nicotine and Potassium

随着施肥量的增加,烤烟叶面积和单叶重逐渐增大,打顶后各处理的烟碱积累表现有差异。欠肥处理烟碱总量偏低,在打顶后10d和30d左右达到积累高峰;适肥处理烟叶烟碱积累速率在打顶后40d之前均保持较高,后略有降低;过肥处理在打顶后20d内积累速率较大,品种间有差异。随着施肥量的增加,叶片钾含量逐渐升高,打顶前钾含量为最高,打顶后呈先降低后升高的趋势,打顶后30d各处理均达到最小值,品种间有差异。

Along with the increase of fertilization rates, the flue-cured tobacco＇s leaf area and weight increase gradually, and after topping , the nicotine accumulation performance of each handling has discrepancy, it is low to owe fertilizer to han- dle nicotine amount , after topping around 10d and 30d, reaches accumulation peak ; After suitable fertilizer keeps higher af- ter handling tobacco nicotine accumulation speed in topping before 40d, reducing somewhat; After owns fertilization handling after topping in 20d, accumulation speed is greater, there is discrepancy between kinds. Along with fertilization increased, before topping potassium of leaf gradual rise, after highest dozen tops, shows the tendency that goes up after reducing first, the dozen very rear each handlings of 30d reach minimum ,there were discrepancies between different varieties.