湖北农业科学 ›› 2022, Vol. 61 ›› Issue (12): 31-37.doi: 10.14088/j.cnki.issn0439-8114.2022.12.007

• 资源·环境 • 上一篇    下一篇

盐边县不同海拔植烟土壤肥力变化分析

熊维亮1, 潘兴兵1, 冯文龙1, 刘余1, 袁家富2, 徐祥玉2   

  1. 1.四川省烟草公司攀枝花市公司,四川 攀枝花 617026;
    2.湖北省农业科学院植保土肥研究所,武汉 430064
  • 收稿日期:2021-03-04 出版日期:2022-06-25 发布日期:2022-07-22
  • 通讯作者: 徐祥玉(1979-),男,副研究员,博士,主要从事土壤改良、施肥环境过程等研究,(电子信箱)xuxiangyu2004@sina.com。
  • 作者简介:潘兴兵(1985-),男,四川西昌人,农艺师,主要从事烟草栽培及土壤学研究,(电话)13882373572(电子信箱)272659962@qq.com
  • 基金资助:
    四川省烟草公司攀枝花市公司科技项目

Analysis on tobacco-planting soil fertility changes at different altitudes in Yanbian county

XIONG Wei-liang1, PAN Xing-bing1, FENG Wen-long1, LIU Yu1, YUAN Jia-fu2, XU Xiang-yu2   

  1. 1. Panzhihua Branch, Sichuan Tobacco Company, Panzhihua 617026, Sichuan,China;
    2. Institute of Plant Protection, Soil and Fertilizer, Hubei Academy of Agricultural Sciences,Wuhan 430064,China
  • Received:2021-03-04 Online:2022-06-25 Published:2022-07-22

摘要: 应用主成分分析和等间距聚类分析法对攀枝花市盐边县烟区不同海拔植烟土壤养分和肥力状况进行综合评价。结果表明,2009—2010年土壤pH和碱解氮适中,有机质、水溶性氯偏低,速效磷、速效钾、交换性钙、交换性镁丰富;2015—2017年pH稍有升高,有机质和水溶性氯稍有降低,速效磷、速效钾、交换性钙、交换性镁大幅度上升。2015—2017年土壤肥力综合得分(IFI)的变幅为0.24~0.84,变异系数较2009—2010年降低,IFI平均值为0.60,较2009—2010年提高;主要是中、低海拔IFI提高,高海拔降低;不同海拔高度土壤的综合肥力指标值大小表现为中海拔>高海拔>低海拔。2次普查结果显示,土壤养分各指标对肥力综合评价值贡献变异较大,表明连年化肥施用导致土壤养分不平衡加剧。

关键词: 海拔, 土壤肥力, 时空演变, 综合评价, 盐边县

Abstract: Principal component analysis and equidistant cluster analysis were used to evaluate the status of soil nutrients and fertility in Yanbian county, Panzhihua city. The results showed that soil pH and alkali-hydrolyzable nitrogen were moderate, organic matter and water-soluble chlorine were low, and available phosphorus, available potassium, exchangeable calcium and exchangeable magnesium were abundant in soil from 2009 to 2010. From 2015 to 2017, pH increased slightly, organic matter and water-soluble chlorine decreased slightly, and available phosphorus, available potassium, exchangeable calcium and exchangeable magnesium increased significantly; the variation range of soil fertility comprehensive score (IFI) in 2015—2017 was 0.24~0.84, and the coefficient of variation was lower than that in 2009—2010. The average VALUE of IFI was 0.60, which was higher than that in 2009—2010; IFI increased at middle and low altitudes, but decreased at high altitudes; the comprehensive fertility index values of soil at different elevations were in the order of middle altitude > high altitude > low altitude. The results of the two censuses showed that the contribution of each index of soil nutrients to the comprehensive evaluation value of fertility was significantly different, indicating that the continuous application of chemical fertilizer aggravated the soil nutrient imbalance.

Key words: altitude, soil fertility, spatial-temporal evolution, comprehensive evaluation, Yanbian county

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