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农学学报 ›› 2019, Vol. 9 ›› Issue (1): 16-20.doi: 10.11923/j.issn.2095-4050.cjas18030013

所属专题: 耕地保护

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

30年扬州市邗江区耕地土壤pH值时空演变

刘 燕1, 毛 伟2, 杨晓东1, 陈明波1, 高 晖2, 步学林3   

  1. 1.扬州市邗江区土壤肥料站;2.扬州市耕地质量保护站;3.扬州市邗江区公道农业综合服务中心
  • 收稿日期:2018-03-15 修回日期:2018-05-22 接受日期:2018-06-06 出版日期:2019-01-18 发布日期:2019-01-18
  • 通讯作者: 刘 燕 E-mail:maowei918
  • 基金资助:
    江苏省农业三新工程“扬州地区补充耕地快速培肥技术集成与推广”(sxgc[2017]158);耕地质量提升与化肥减量增效项目(苏财农[2017]68 号)。

Temporal and Spatial Changing of Farmland pH Value in Hanjiang District, Yangzhou

  • Received:2018-03-15 Revised:2018-05-22 Accepted:2018-06-06 Online:2019-01-18 Published:2019-01-18

摘要: 利用了扬州市邗江区2014 年采集的834 个耕地土样以及1984 年第二次土壤普查样品(527 个)进行比较,基于ArcGIS 10.1、SPSS 19 等软件研究了30 年土壤pH值时空演变。结果表明:邗江区2014 年土壤平均pH 6.23,以Ⅱ级(6.5~7.5)、Ⅲ级(5.5~6.5)为主,占整个耕地面积的92.66%;比1984 年下降0.88单位,1984 年土壤pH值以Ⅱ级(6.5~7.5)为主,占整个耕地面积的98.96%;30 年间耕地土壤pH值呈整体下降趋势,主要影响因素有酸性降雨和施肥。

关键词: 化感物质, 化感物质, 玉米种子, 发芽率, 丙二醛, 根系活力

Abstract: The spatial-temporal changing of soil pH value over 30 years in the Hanjiang District of Yangzhou City was studied based on ArcGIS 10.1 and SPSS 19 by comparing 834 farmland soil samples collected in 2014 and 527 samples of the Second Soil Survey in 1984. The results showed that the average soil pH value in 2014 was 6.23, which was dominated by Grades II (6.5-7.5) and III (5.5-6.5), accounting for 92.66% of the entire cultivated area. In 1984, the soil pH value was mainly Grade II (6.5-7.5), accounting for 98.96% of the entire cultivated area. The pH value was 0.88 unit lower in 2014 than that in 1984. The pH value of cultivated soil showed an overall downward trend during the 30 years, mainly caused by acidic rainfall and fertilization.