| 攀枝花市米易县植烟土壤生态化学计量学特征研究 |
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| 引用本文： | 杨军伟,王昌全,曾庆宾,张伟,杨建春,李冰,杨梅.攀枝花市米易县植烟土壤生态化学计量学特征研究[J].中国农学通报,2016,32(17):111-114. |
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| 作者姓名： | 杨军伟 王昌全 曾庆宾 张伟 杨建春 李冰 杨梅 |
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| 作者单位： | 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 |
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| 基金项目： | 四川省烟草公司重点项目(SCYC201504),攀枝花市烟草公司科技项目 |
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| 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。
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| 关 键 词： | 耕地质量 耕地质量 遥感监测 中原地区 济源市 |
| 收稿时间： | 2016/3/28 0:00:00 |
| 修稿时间： | 2016/4/13 0:00:00 |
Ecological Stoichiometry Characteristics of Tobacco Planting Soil in Miyi, Panzhihua |
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| Abstract: | In order to clarify the effect of long-term tobacco cultivation on the ecological stoichiometry characteristics and provide the regional soil ecological resistance measures in the tobacco-planting area, Miyi County. The comparative analysis of soil ecological chemistry characteristics between the Second Soil Survey (1982s) and current situation (2013s) in Miyi County were studied. The results showed that: (1) Long-term cultivation of tobacco resulted in the large quantities of organic carbon consumption. Compared with the data of Second Soil Survey (1982s), the C/N, C/P, C/K decreased by 23.69%, 23.63% and 7.16%, which was for the relative enrichment of total nitrogen, phosphorus and potassium. The N/P ratio decreased by 15.98% than the Second Soil Survey (1982s), which was due to different enrichment ratio in soil nitrogen and phosphorus, the phosphorus was more easily stabilized by soil. (2) The change of soil organic carbon content and N/P, N/K, P/K ratio were correlated significantly, indicating that change of soil organic carbon content was the major factor on soil ecological stoichiometry balance in tobacco-planting area of Miyi County. We should pay more attention on the soil organic carbon addition in the tobacco-planting soil. |
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| Keywords: | Miyi County tobacco soil ecological stoichiometry |
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