不同地区植烟土壤施钾量对烤烟化学成分和经济性状的影响

EFFECFS OF APPLYING AMOUNT OF POTASSIUM FERTILIZERS ON CHEMICAL COMPONENTS AND ECONOMIC CHARACTERS OF TOBACCO

1991年在湘南和湘东烟—稻轮作田土壤进行了烤烟施钾量试验。结果表明,在施钾量为135～405kg/ha的范围内,烟叶中水溶性总糖和钾的含量与施钾量呈极显著正相关;总氮和蛋白质含量与施钾量呈负相关,但未达显著水平.新田三井灰泥田烤烟适宜施钾量为405kg/ha:嘉禾普满黑灰泥田,宁远大界灰泥田和浏阳官渡黄扁砂泥烤烟适宜施钾量为270kg/ha.用B种方法和C种方法预测的烤烟施钾量与田间试验所得适宜施钾量非常接近.

The potassium experiments in yield of between tobacco and rice in the eastern and southern Hunan showed that water-soluble sugar and potassium content in tobacco or amount of potassium fenrtilizer applied were most significant relations. Total nutrition or protein in tobacco and amount of potassium fertifizer applied were negative correlation, but have no significance level. Appropriate amounts of potassium fertilizer applied are 405 kg/ha in lime mud paddy soil in xintian, and 270 kg/ha in dark lime mud paddy soil in Jiahe, in lime mud paddy soil in Lingyuan and shalesant paddy soil in Liuyany. The amount Calculated of B and C methods and the amount experimented in field are approximate