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中国农学通报 ›› 2014, Vol. 30 ›› Issue (6): 169-174.doi: 10.11924/j.issn.1000-6850.2013-1171

所属专题: 耕地保护

• 农学 农业基础科学 • 上一篇    下一篇

芒市耕地土壤肥力特征及变化趋势分析

张国云 郭晋 康昌和 康云昌 周新惟   

  • 收稿日期:2013-04-24 修回日期:2013-06-17 出版日期:2014-02-25 发布日期:2014-02-25
  • 基金资助:
    农业部重点增粮技术推广与培训专项(2130106); 2008-2010年中央测土配方施肥补贴项目。

The Farmland Soil Fertility Characteristics and Variation Tendency in Mangshi County

  • Received:2013-04-24 Revised:2013-06-17 Online:2014-02-25 Published:2014-02-25

摘要: 为揭示芒市耕地土壤养分变化特征,利用2009年测土配方施肥项目中耕地地力调查数据与全国第二次土壤普查数据及肥力分级标准进行分析研究。结果表明:单项指标,pH显微酸性、酸性的面积较大,且土壤表现出酸化趋势;有机质、全氮、碱解氮含量中等、丰富水平的面积较大,但总体含量水平趋于下降;速效磷、速效钾含量缺乏、甚缺水平的面积较大,表现出大面积磷、钾不足,但速效磷含量有所上升,速效钾含量有所下降。芒市耕地土壤总体表现出微酸,有机质、全氮、碱解氮中等偏丰富,速效磷、速效钾缺乏,旱作土养分高于水稻土;区域间养分变化不一致,差异较大;耕地土壤肥力整体在下降。

关键词: ARCH模型, ARCH模型

Abstract: In order to reveal the farmland soil nutrients variation characteristics in Mangshi County, we are using the core samples data from the project of testing soil for formulated fertilization in 2009, second time of soil census data and fertilizer grading standard, carries on the analysis and study. The results showed that, pH tended to micro-acidity with large area and soil put up to acidification trend; organic matter, total nitrogen and alkali solution nitrogen content in medium level with large area, but total content level tended to decline; lack of available phosphorus and available potassium content in large area, but available phosphorus increased, rapidly-available potassium decreased; the characteristics of farmland soil in Mangshi County showed tartish, organic, total nitrogen and alkali-hydrolyzable nitrogen belonged to medium to rich level but lack of potassium and phosphorus. The nutrient in dry farming soil was higher than paddy soil and with different region distribution, the whole level of fertility in cultivated land tended to decrease.