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中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (31): 290-294.doi: 10.11924/j.issn.1000-6850.2014-2172

所属专题： 土壤重金属污染

• 植物保护 农药 • 上一篇    下一篇

修复剂及其施用水平对广西高铅污染土壤的影响

曾炜铨,宋波   

  1. 桂林理工大学环境科学与工程学院,桂林理工大学环境科学与工程学院
  • 收稿日期:2014-08-09 修回日期:2014-08-09 接受日期:2014-09-09 出版日期:2014-11-20 发布日期:2014-11-20
  • 通讯作者: 曾炜铨
  • 基金资助:
    国家自然科学基金(No.41161056)；广西“八桂学者”建设工程专项经费；广西自然科学基金重大项目(No.2013GXNSFEA053002)

Proportion of Soil Remedies of the Lead-contaminated Soil in Guangxi

  • Received:2014-08-09 Revised:2014-08-09 Accepted:2014-09-09 Online:2014-11-20 Published:2014-11-20

摘要： 为降低高铅污染土壤对农作物的毒害，通过采用水浸取、DTPA浸取单步浸取试验，研究不同类型修复剂对广西环江、阳朔2个地区的高铅污染土壤的影响。结果表明，随着施加水平的增加，各个修复剂对土壤pH增加幅度的大小顺序是：有机肥>磷矿粉>钙镁磷肥>生石灰，磷矿粉、有机肥能够提高供试土壤的pH。磷酸二氢钾、过磷酸钙（高、中、低）均显著降低土壤DTPA-Pb含量，分别为32%~72%、31%~57%；而磷酸二氢钾对水溶态铅含量的影响与之相反，增加了水溶态铅含量1~3.4倍，过磷酸钙（高）显著地降低了水溶态铅含量，降低水溶态铅含量约88%。有机肥能够通过降低土壤水溶态铅的含量，增加了DTPA的浸取率。对供试土壤S-1，生石灰、有机肥、磷矿粉均显著降低了土壤中水提取态铅的含量，土壤水提取态铅含量均为低浓度处理>高浓度处理；对供试土壤S-2，有机肥、磷矿粉在不同施加浓度均显著地降低了水溶态铅的含量，降低为41%~55%。

关键词: 烟草, 烟草, 青枯病, 抗性遗传分析, SSR

Abstract: In this paper, research of influence of different types of soil remedies on high lead-contaminated soils in Guangxi Huanjiang and Yangshuo was carried out. In view of the selected physical and chemical properties of soil, the effects of pH, total Pb, DTPA-Pb and H2O extractable-Pb in soil were studied by using water or DTPA one step extraction test. The results indicated that with the applied level increasing, the effects of different remedies on soil pH increased as the order: organic fertilizer ＞ ground phosphate rock ＞ calciummagnesia phosphate fertilizer ＞ lime, and phosphate rock powder and organic fertilizer could greatly improve the soil pH. Potassium dihydrogen phosphate and calcium superphosphate (high, medium and low) significantly reduced soil DTPA-Pb content by 32%-72% and 31%- 57%, respectively. By contrast, potassium dihydrogen phosphate had opposite effect on water soluble lead and increased water soluble lead content 1-3.4 times. Calcium superphosphate (high) significantly reduced water soluble lead content by about 88% . Organic fertilizer could reduce the amount of water soluble lead in the soil, and increase the leaching rate of DTPA. For tested soil S-1, lime, organic fertilizer and phosphate rock powder significantly reduced the amount of soil water extracted lead, soil water extracted lead content in low concentration treatment was higher than that in high concentration treatment; for tested soil S-2, organic fertilizer and phosphate rock powder significantly reduced water soluble lead content by 41%-55% with different applied concentrations.