【摘要】 为了研究江西不同类型紫色土烤烟养分分布规律,2009年在紫色土烟区对点采集土样与烟叶样进行化验分析,得出结果如下:江西紫色土养分含量全氮0.78g/kg、全磷0.75g/kg、全钾17.7g/kg、碱解氮52.8mg/kg、有效磷14.4mg/kg、速效钾152.2mg/kg,土壤养分呈低氮、低磷、高钾的规律,紫色土烤烟中烟叶含钾量较高,但烟叶含磷量较低,今后紫色土烤烟种植应注意合理施用磷肥。在不同类型紫色土烤烟中,烟叶含氮量与含磷量都无显著性差异,但碱性紫色土更能促进烤烟对钾的吸收;不同叶位的烟叶含氮量与含钾量均无显著性差异,但酸性与中性紫色土烤烟其不同叶位的烟叶含磷量均从下至上逐渐增高。更多还原

【Abstract】 Soil and tobacco samples were collected by point to point in purple soil and were tested in 2009 to investigate nutrient distribution in flue-cured tobacco planted in different types of purple soil in Jiangxi province.Results showed that soil available N,P,K and total N,P,K were 52.8mg/kg,14.4mg/kg,152.2mg/kg,0.78g/kg,0.75g/kg,and 17.7g/kg,respectively in purple soil.Purple soil,in general,was characterized with low nitrogen,low phosphorus and high potassium,correspondingly tobacco phosphorus content was low and potassium content was high,suggesting that application of phosphate fertilizer should be moderate in purple soil.Among the studied tobacco in different purple soils,there was no significant difference in tobacco nitrogen content and phosphate content,but absorption of nutrients of potassium was better in alkaline purple soil.Nutrients distribution in tobacco leaf were that content of phosphate rose with position of leaves from lower to upper in acid and neutral purple soils,and content of nitrogen and phosphate showed no significant difference with position of leaves.更多还原