四川达州白肋烟植烟土壤养分状况分析

[目的]研究达州白肋烟产区主要植烟土壤养分状况,为合理施肥提供依据。[方法]在达州白肋烟产区宣汉县采集有代表性烟田样品,分析土壤pH、有机质、全氮、全磷、全钾、碱解氮、速效磷、速效钾含量。[结果]达州白肋烟产区大部分植烟土壤pH适宜;有机质含量适中,部分区域偏低;土壤全氮、全磷、全钾含量偏低;土壤碱解氮含量适中,速效磷、速效钾含量不足。[结论]在该区白肋烟平衡施肥工作中,应稳施有机肥与氮肥,加大磷肥、钾肥的用量,并根据各植烟区域土壤养分状况分类指导。

Analysis on Soil Nutrient Status of Tobacco-planting Soil in Dazhou, Sichuan Province

[Objective] The nutrient status of tobacco-planting soil in Dazhou was studied to provide scientific reference for reasonable fertilizer application of burley tobacco.[Method] The soils of representative samples in burley tobacco growing area of Xuanhan County were collected to study pH,contents of organic matter,total N,total P,total K,alkali-hydro nitrogen,available P and K.[Result] For most tobacco-planting soil,pH was moderate.The content of organic matter was moderate in most fields,and some were relatively low.The content of total N,P,K was low.The content of available nitrogen was moderate,but the content of available phosphorus and available potassium was low.[Conclusion] Some application measures should be used in balanced fertilization of tobacco-planting which included maintaining the content of organic matter and nitrogen fertilizer,increasing the application of phosphate fertilizer and potassium fertilizer and implementing the measure respectively according to the soil condition.