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中国农学通报 ›› 2016, Vol. 32 ›› Issue (17): 111-114.doi: 10.11924/j.issn.1000-6850.casb16030193

所属专题: 资源与环境 烟草种植与生产 农业生态

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

攀枝花市米易县植烟土壤生态化学计量学特征研究

杨军伟,王昌全,曾庆宾,张伟,杨建春,李冰,杨梅   

  1. 四川省烟草公司攀枝花市公司,四川农业大学资源学院,四川省烟草公司攀枝花市公司,四川省烟草公司攀枝花市公司,四川省烟草公司攀枝花市公司,四川农业大学资源学院,四川农业大学资源学院
  • 收稿日期:2016-03-28 修回日期:2016-04-13 接受日期:2016-04-25 出版日期:2016-06-20 发布日期:2016-06-20
  • 通讯作者: 王昌全
  • 基金资助:
    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)。

Ecological Stoichiometry Characteristics of Tobacco Planting Soil in Miyi, Panzhihua

  • Received:2016-03-28 Revised:2016-04-13 Accepted:2016-04-25 Online:2016-06-20 Published:2016-06-20

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与现今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。

关键词: 耕地质量, 耕地质量, 遥感监测, 中原地区, 济源市

Abstract: In order to clarify the effect of long- term tobacco cultivation on ecological stoichiometry characteristics of soil and provide scientific basis for ecological resistance measures in tobacco-planting area of 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 of tobacco resulted in large quantities of organic carbon consumption, compared with the data of the Second Soil Survey, C/N, C/P and C/K decreased by 23.69%, 23.63% and 7.16%, respectively, which was caused by the enrichment of total nitrogen, phosphorus and potassium in different degrees, N/P decreased by 15.98% in comparing with that of the Second Soil Survey, due to the fact that phosphorus could be more easily stabilized in soil and had a relatively bigger increasing range; (2) soil organic carbon content was significantly positive correlated with N/P, N/K and P/K, indicating that soil organic carbon content was the major influence factor of soil ecological stoichiometry in tobacco-planting area in Miyi. The supplement of soil organic carbon should be highlighted.

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