浙江农业学报 ›› 2024, Vol. 36 ›› Issue (9): 2060-2069.DOI: 10.3969/j.issn.1004-1524.20231039

• 环境科学 • 上一篇    下一篇

施加生物炭对黑土区坡耕地土壤主要理化指标的动态影响

武佳龙1(), 迟铭2, 高燕3, 王祥4, 沈海鸥1,*()   

  1. 1.吉林农业大学 资源与环境学院,吉林 长春 130118
    2.丹东市水务服务中心,辽宁 丹东 118100
    3.松辽水利委员会松辽流域水土保持监测中心站,吉林 长春 130021
    4.中国农业大学 土地科学与技术学院,北京 100193
  • 收稿日期:2023-08-29 出版日期:2024-09-25 发布日期:2024-09-30
  • 作者简介:沈海鸥,E-mail:shensusan@163.com
    武佳龙(1999—),男,甘肃陇西人,硕士研究生,主要从事水土保持研究。E-mail:wujialongswcr@163.com
  • 通讯作者: 沈海鸥,E-mail:shensusan@163.com
  • 基金资助:
    国家重点研发计划项目(2021YFD1500700);国家重点研发计划项目(2016YFE0202900)

Effects of biochar application on soil physiochemical indicators at sloping farmland in black soil region

WU Jialong1(), CHI Ming2, GAO Yan3, WANG Xiang4, SHEN Haiou1,*()   

  1. 1. College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China
    2. Dandong Water Service Center, Dandong 118100, Liaoning, China
    3. Songliao Soil and Water Conservation Monitoring Center Station of Songliao Water Resources Commission, Changchun 130021, China
    4. College of Land Science and Technology, China Agricultural University, Beijing 100193, China
  • Received:2023-08-29 Online:2024-09-25 Published:2024-09-30

摘要:

采用田间原位监测试验方法,设计CK(不施加生物炭)和SW(施加生物炭30 t·hm-2)2个处理,研究施加生物炭当年(5—10月)对东北黑土区坡耕地土壤容重、土壤质量含水率、土壤pH值、电导率、有机质含量和阳离子交换量等主要理化指标的影响。结果表明,施加生物炭当年土壤容重降低,其中,6—10月垄丘土壤容重降低6.42%~11.21%,且随时间延长,其降幅减小。施加生物炭当年6—8月的土壤质量含水率降低,且垄丘的降低幅度小于垄沟,随坡位由上到下,土壤质量含水率的降幅逐渐减小;而9—10月的土壤质量含水率增加,且垄丘的增加幅度大于垄沟,随坡位由上到下,土壤质量含水率的增加幅度逐渐增大。此外,施加生物炭能够增加土壤pH值、有机质含量,减小电导率。综上,施加生物炭当年即可改变土壤主要理化指标,提升土壤质量。

关键词: 生物炭, 土壤容重, 土壤质量含水率, 土壤化学指标, 坡位, 黑土区

Abstract:

In the present study, an in-situ monitoring experiment was carried out at the sloping farmland to reveal the effects of biochar application during one year (from May to October) on soil bulk density, mass water content, pH, electrical conductivity, organic matter content and cation exchange capacity in black soil region, northeast China. Two experimental treatments were designed, including no biochar application (CK) and application of 30 t·hm-2 biochar (SW). The results showed that biochar application during one year decreased soil bulk density. Compared to the CK, the soil bulk density of ridge mound was decreased by 6.42%-11.21% from June to October. The decrease range of soil bulk density was lowered with time. The biochar application decreased the soil mass water content from June to August, and the decrease range of ridge mound was smaller than that of ridge furrow. When the slope position was from top to bottom, the decrease range of soil mass water contents decreased gradually. However, the biochar application increased the soil mass water content from September to October, and the increase range of ridge mound was greater than that of ridge furrow. When the slope position was from top to bottom, the increase range of soil mass water content was elevated gradually. Furthermore, the biochar application increased soil pH, organic matter content yet decreased soil electrical conductivity. Therefore, biochar application during one year could change the typical soil physical and chemical indicators, hence improve soil quality.

Key words: biochar, soil bulk density, soil mass water content, soil chemistry indicator, slope position, black soil region

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