浙江农业学报 ›› 2021, Vol. 33 ›› Issue (10): 1904-1912.DOI: 10.3969/j.issn.1004-1524.2021.10.14

• 环境科学 • 上一篇    下一篇

湖南省油菜主产区土壤养分含量与重金属污染风险评价

熊廷浩1(), 黄益国2, 周旋3, 鲁艳红3, 资涛1, 胡宇倩1, 宋海星1,*()   

  1. 1.湖南农业大学 资源环境学院,湖南 长沙 410128
    2.衡阳市农业科学研究所,湖南 衡南 421101
    3.湖南省土壤肥料研究所,湖南 长沙 410125
  • 收稿日期:2020-12-25 出版日期:2021-10-25 发布日期:2021-11-02
  • 通讯作者: 宋海星
  • 作者简介:宋海星,E-mail: shx723@163.com
    熊廷浩(1994—),男,湖北荆州人,硕士研究生,研究方向为土壤肥力与作物施肥技术。E-mail: 1092711822@qq.com
  • 基金资助:
    国家重点研发计划(2018YFD0200900)

Evaluation on soil nutrients and heavy metals pollution risk in main producing areas of rapeseed in Hunan Province, China

XIONG Tinghao1(), HUANG Yiguo2, ZHOU Xuan3, LU Yanhong3, ZI Tao1, HU Yuqian1, SONG Haixing1,*()   

  1. 1. College of Resources & Environment, Hunan Agricultural University, Changsha 410128, China
    2. Hengyang Agricultural Science Institute, Hengnan 421101, China
    3. Soil and Fertilizer Institute of Hunan Province, Changsha 410125, China
  • Received:2020-12-25 Online:2021-10-25 Published:2021-11-02
  • Contact: SONG Haixing

摘要:

在湖南省油菜主产区采集56个耕层土壤样品,测定土壤主要养分与有效态重金属含量,研究土壤肥力现状及其空间分布特征,并对土壤重金属污染风险进行综合评价。结果表明,湖南油菜主产区土壤pH呈弱酸性和微酸性,普遍缺乏有机质和氮、磷、钾、硼、硫、钼,还有约一半的土壤缺少钙和镁,而铁、锰、铜、锌元素丰富,土壤综合肥力等级评价结果为一般。镉轻度、中度和重度污染的样品分别占16.1%、1.8%和1.8%,但未发现铜、锌、铅、镍污染样本。据此认为,湖南省油菜生产中应合理补充有机质和氮、磷、钾、硼等元素,同时,部分地区还需采取降低镉有效性的改土措施。

关键词: 油菜主产区, 土壤养分, 肥力评价, 重金属

Abstract:

In this study, 56 topsoil samples were collected from the main producing areas of rapeseed in Hunan Province, and the contents of main nutrients and available heavy metals in these samples were determined to reveal the spatial distribution characteristics of soil fertility, as well as heavy metals pollution risk. The results showed that the soils in the main producing areas of rapeseed in Hunan Province were mainly mild acid and weak acid, and the deficiency of organic matter, nitrogen, phosphorus, potassium, boron, sulfur and molybdenum was common. About half of the soil samples were deficient in calcium and magnesium, yet were rich in iron, manganese, copper and zinc. The soil comprehensive fertility was rated average. Among all the samples, the lightly, moderately and seriously cadmium polluted samples accounted for 16.1%, 1.8% and 1.8%, respectively, and no pollution risk of copper, zinc, lead and nickel was found. Therefore, organic matter, nitrogen, phosphorus, potassium, boron should be reasonably supplemented in the main producing areas of rapeseed in Hunan Province, and measures should be taken to reduce the availability of cadmium in certain areas.

Key words: main producing areas of rapeseed, soil nutrients, fertility evaluation, heavy metal

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