攀枝花市米易县植烟土壤生态化学计量学特征研究  

Ecological Stoichiometry Characteristics of Tobacco Planting Soil in Miyi, Panzhihua

作　　者：杨军伟[1] 王昌全[2] 曾庆宾[1] 张伟[1] 杨建春[1] 李冰[2] 杨梅[2] 

机构地区：[1]四川省烟草公司攀枝花市公司,四川攀枝花617099 [2]四川农业大学资源学院,成都611130

出　　处：《中国农学通报》2016年第17期111-114,共4页Chinese Agricultural Science Bulletin

基　　金：四川省烟草公司重点项目"植烟土壤质量提升关键技术研究与集成应用"(SCYC201504);攀枝花市烟草公司科技项目"土壤保育及平衡施肥技术研究与应用"(2016001)

摘　　要：为阐明长期植烟对土壤生态化学计量特征变化的影响,对比分析了攀枝花市米易县植烟区域第二次土壤普查(1982年)与现今(2013年)植烟土壤生态化学计量学演变特征,为区域植烟土壤生态退化阻控提供科学依据。结果表明:(1)长期植烟引起土壤有机碳的大量消耗,与第二次土壤普查结果相比,该区域植烟土壤C/N、C/P、C/K分别下降23.69%、23.63%和7.16%,这与全N、P、K不同程度富集有关;N/P较第二次土壤普查降低15.98%,是由于磷更容易被土壤固定,增幅相对较大。(2)米易县植烟土壤有机碳含量与N/P、N/K、P/K变化呈极显著正相关,说明土壤有机碳是影响土壤生态化学计量比变化的重要因素,应重视植烟土壤有机碳的补充。In order to clarify the effect of long- term tobacco cultivation on ecological stoichiometrycharacteristics of soil and provide scientific basis for ecological resistance measures in tobacco-planting areaof Miyi, comparative analysis of soil ecological chemistry characteristics between the Second Soil Survey（1982s） and current situation（2013s） were conducted. The results showed that：（1） long-term cultivation oftobacco resulted in large quantities of organic carbon consumption, compared with the data of the Second SoilSurvey, C/N, C/P and C/K decreased by 23.69%, 23.63% and 7.16%, respectively, which was caused by theenrichment of total nitrogen, phosphorus and potassium in different degrees, N/P decreased by 15.98% incomparing with that of the Second Soil Survey, due to the fact that phosphorus could be more easily stabilizedin soil and had a relatively bigger increasing range;（2） soil organic carbon content was significantly positivecorrelated with N/P, N/K and P/K, indicating that soil organic carbon content was the major influence factor ofsoil ecological stoichiometry in tobacco-planting area in Miyi. The supplement of soil organic carbon should behighlighted.

关 键 词：米易县 植烟土壤 生态化学计量学 

分 类 号：S572[农业科学—烟草工业]