【摘要】 在植烟土壤中设置不同处理,分别施入不同品种的钾肥,以研究其在土壤中的动态变化及对烟叶品质的影响。试验结果表明:土壤全钾含量随着烟株的吸收呈下降趋势,不同时期土壤中速效钾的含量分别为腐殖酸钾+NP>腐殖酸+NPK>硫酸钾+NP>不施钾+NP>不施肥,这与不同处理烟叶中钾含量是一致的。不同时期土壤中缓效钾的含量为硫酸钾+NP>腐殖酸钾+NP>腐殖酸+NPK>不施钾+NP>不施肥。腐殖酸钾肥对土壤的保肥性及对烟叶品质的提高方面都有较大的作用。更多还原

【Abstract】 Different treatments in the tobacco fields soil by adding different potash fertilizers were out for studying the dynamic changes and their influence on the quality of tobacco leaves.According to the result of this experiment,the content of total kalium in the soil decreased along with the uptake by tobacco plants.At different stages,the content of available potassium was humic potassium + NP>humic acides+NPK>potassium sulfate+NP>none potassium+NP>No fertilizer,which is in conformity with that in the leaves.During the different periods in the soil,the content of slow effect potassium potassium sulfate+NP> humic potassium + NP> humic+NPK> none potassium+NP>no ferfilizer.And the humic potassium manure has an obvious effect on maintaining the richness of the soil and improving the quality of the tobacco leaves.更多还原