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中国农学通报 ›› 2015, Vol. 31 ›› Issue (24): 199-203.doi: 10.11924/j.issn.1000-6850.casb15030154

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

风化煤对苏打盐化土的改良效果研究

何杰,张强,冯悦晨,闫敏,王斌,黄高鉴   

  1. 山西大学生物工程学院,山西省农业科学院农业环境与资源研究所,山西省农业科学院农业环境与资源研究所,山西省农业科学院农业环境与资源研究所,山西省农业科学院农业环境与资源研究所,山西省农业科学院农业环境与资源研究所
  • 收稿日期:2015-03-19 修回日期:2015-07-09 接受日期:2015-05-25 出版日期:2015-08-26 发布日期:2015-08-26
  • 通讯作者: 张强
  • 基金资助:
    山西省构建新型农业社会化服务体系建设项目-饲用草料-畜牧养殖绿色循环经济创新示范园-1;山西省农业综合开发项目-大同盆地盐碱地改良技术示范与推广;山西省科技援疆项目-新疆盐碱土壤综合改良利用技术应用研究(2014072003)

Improvement effects of weathered coal on Soda-Saline Soil

张强,,闫敏,王斌 and 黄高鉴   

  • Received:2015-03-19 Revised:2015-07-09 Accepted:2015-05-25 Online:2015-08-26 Published:2015-08-26

摘要: 针对山西省大同盆地干旱、半干旱性气候下的苏打盐化土,采用山西灵石风化煤作为改良材料进行田间试验,研究了风化煤不同施用量情况对土壤pH、电导率(EC)、碱化度(ESP)和作物生物量的影响。试验结果表明:0~10cm表层土壤pH相对降低率随风化煤施用量的加大呈规律性增加,10cm以下土壤pH并未表现出显著性增加。土壤电导率(EC)和碱化度(ESP)在施用风化煤量不大的情况下与对照相比并未表现出显著性差异,当风化煤施用量达到60t/hm2的情况下,EC和ESP显著降低。风化煤施用量在60t/hm2的情况下,土壤0~10、10~20、20~40cm土层pH相对降低率分别为8.9%、5.3%、2.5%,0~10cm表层土壤的EC值降低了0.13mS/cm,同时土壤的ESP从26%下降到13%。结果表明,在山西大同盆地苏打盐化土改良中,风化煤的最佳施用量为60t/hm2

关键词: 杂种马褂木, 杂种马褂木, 干旱胁迫, 含水量, 叶绿素含量, 落叶

Abstract: Aiming at soda- saline soil in Shanxi Datong basin under arid and semiarid climate conditions, Shanxi Lingshi weathered coal was used as modified material, field experiment was conducted, and soil pH, electrical conductivity (EC), exchange sodium percentage (ESP) and crop biomass were measured under different application amounts of weathered coal. The results showed that the relative reduction rate of soil pH of 0-10 cm increased with the increase of the application amount of weathered coal, while soil pH below 10 cm had no significant increase. When the application amount of weathered coal was small, EC and ESP had no significant difference compared with that of CK. EC and ESP reduced significantly under the application amount of 60 t/hm2. The relative reduction rate of soil pH of 1-10, 10-20 and 20-40 soil layers was 8.9%, 5.3% and 2.5% respectively under the application amount of 60 t/hm2. EC reduced 0.13 mS/cm in the soil layer of 1-10 cm, and ESP reduced from 26% to 13%. The results showed that in the improvement of soda-saline soil in Shanxi Datong, the best application amount of weathered coal was 60 t/hm2.