北方农业学报 ›› 2020, Vol. 48 ›› Issue (2): 51-57.doi: 10.12190/j.issn.2096-1197.2020.02.08

• 土壤肥料·节水灌溉 • 上一篇    下一篇

模拟农田条件下不同煤基物质配比对盐碱土理化性质的影响

赵才毅1, 索全义1, 刘巍2, 刘誉1, 蔺方春2, 于晓雯1   

  1. 1.内蒙古农业大学 草原与资源环境学院/内蒙古自治区土壤质量与养分资源重点实验室,内蒙古 呼和浩特 010011;
    2.内蒙古茂元腐植酸科技有限公司,内蒙古 临河 015300
  • 收稿日期:2020-02-26 出版日期:2020-04-20 发布日期:2020-07-17
  • 通讯作者: 索全义(1962—),男,教授,博士,博士生导师,主要从事植物营养与土壤肥力的研究工作。
  • 作者简介:赵才毅(1995—),女,硕士研究生,研究方向为土壤肥力与植物营养。
  • 基金资助:
    国家自然科学基金项目(31660362)

Effects of different coal-based material ratios on physical and chemical properties of saline-alkali soil under simulated farmland conditions

ZHAO Caiyi1, SUO Quanyi1, LIU Wei2, LIU Yu1, LIN Fangchun2, YU Xiaowen1   

  1. 1. College of Grassland,Resources and Environment,Inner Mongolia Agricultural University/Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources,Hohhot 010011,China;
    2. Inner Mongolia Maoyuan Humic Acid Technology Co. ,Ltd. ,Linhe 015300,China
  • Received:2020-02-26 Online:2020-04-20 Published:2020-07-17

摘要: 【目的】探索施用煤基物质对盐碱土的改良作用,使煤基废弃材料得到合理利用,使盐碱土更适宜作物生长。【方法】采用模拟田间无植物培养试验,开展了煤泥、煤矸石和风化煤3种煤基物质不同配比对土壤容重、孔隙度、pH值、碱化度、可溶性盐含量等土壤理化性质影响的研究。【结果】与对照相比,煤泥、煤矸石和风化煤3种煤基物质的不同配比均会降低盐碱土的容重、碱化度、pH值、可溶性盐含量、水溶性阴离子和阳离子含量。与对照相比,煤基处理的pH值最高降低了0.28个单位,碱化度最高降低13.93%。煤基物质的施用还可改变盐碱土中可溶性盐的组成,水溶性SO42-、Na+和Cl-比例升高、CO32-和HCO3-比例降低。3种煤基物质混合物随着煤泥配比比例的提高和煤矸石及风化煤配比比例的降低,水溶性K+、CO32-和HCO3-含量有降低趋势,煤泥配比最大的处理(M1处理)降低最明显。随着煤泥配比比例的降低,煤矸石和风化煤配比比例的升高,土壤碱化度、容重和孔隙度有降低趋势。【结论】煤基物质不同配比的施用均对盐碱土不良理化性状有改良效果。

关键词: 煤基物质, 煤泥, 煤矸石, 风化煤, 盐碱土

Abstract: 【Objective】To explore the improvement of saline-alkali soils by appling coal-based materials, and use the coal-based waste materials reasonably and the saline-alkali soils suitable for crop growth.【Methods】Simulated field plant-free cultivation experiments were conducted to carry out the effect of different ratios of three coal-based materials including coal slime, coal gangue and weathered coal on soil physicochemical properties such as soil bulk density, porosity, pH value, alkalinity, soluble salt content etc.【Results】Compared with the control, different ratios of coal-based materials such as coal slime, coal gangue and weathered coal could reduce the bulk density, alkalinity, pH value, soluble salt content, water-soluble anion and cation content of saline-alkali soil. Compared with the control, the pH value of the coal-based treatment was reduced by a maximum of 0.28 units, and the alkalinity was reduced by a maximum of 13.93%. The application of coal-based materials could also change the composition of soluble salts in saline-alkaline soil,increased the proportion of water-soluble SO42-, Na+ and Cl- and decreased the proportion of CO32- and HCO3-.With the increase of the proportion of coal slime and the decrease of the proportion of coal gangue and weathered coal, the content of water-soluble K+, CO32- and HCO3- had a downtrend, In particular, under the treatment with the largest proportion of slime (M1 Treatment). With the decrease of the proportion of coal slime and the increase of the proportion of coal gangue and weathered coal, the soil alkalinity, bulk density and porosity had a downtrend.【Conclusion】The application of different ratios of coal-based materials can improve the poor physical and chemical properties of saline-alkali soil.

Key words: Coal-based substances, Coal slime, Coal gangue, Weathered coal, Saline-alkali soil

中图分类号: 

  • S156.2