Changes in salinity, aggregates and physicomechanical quality induced by biochar application to coastal soil

文献类型： 外文期刊

第一作者： Zong, Yutong

作者： Zong, Yutong;Liu, Yaojun;Li, Zichuan;Zhang, Jin;Shan, Shengdao;Li, Yanqing;Ma, Ronghui;Malik, Zaffar;Xiao, Qing;Xiao, Qing

作者机构： Zhejiang Univ Sci & Technol, Sch Environm & Nat Resource, Hangzhou, Peoples R China;Chinese Acad Agr Sci, Res Inst Pomol, Key Lab Mineral Nutr & Efficient Fertilizat Decidu, Xingcheng, Peoples R China;Agr Technol Promot Ctr Shandong Prov, Jinan, Peoples R China;Univ Coll Agr & Environm Sci, Islamia Univ Bahawalpur, Bahawalpur, Pakistan;Zhejiang Univ Sci & Technol, Sch Econ & Management, Hangzhou, Peoples R China;Zhejiang Univ Sci & Technol, Sch Econ & Management, Hangzhou 310023, Peoples R China

关键词： Coastal soil; biochar; aggregates; tensile strength; swelling and shrinkage

期刊名称：ARCHIVES OF AGRONOMY AND SOIL SCIENCE （ 2022影响因子：2.4； 五年影响因子：2.9 ）

ISSN： 0365-0340

年卷期： 2023 年 69 卷 13 期

页码：

收录情况： SCI

摘要： Coastal clayey soil has a great potential for food production and safety while poor physico-mechanical properties have impeded its sustainable utilization. A field experiment was conducted to assess the influence of biochar on physicomechanical properties of coastal clayey soil. The biochars were applied to the coastal soil with the rate of 0, 1%, and 3% (w/w), respectively. Compared with control treatment, the application of three biochars (at the rate of 3%) had significantly improved soil fertility, i.e. organic carbon, total nitrogen, available nitrogen and available phosphate, respectively. Biochar treatments significantly increased soil porosity, and aggregates stability, while reduced the soil salinity compared to the control treatment. Meanwhile, biochar application significantly increased the plastic index of coastal clayey soil while decreased soil tensile strength and shrink swell properties compared to the control. Biochar clearly altered soil pore characteristics, consequently rebuilding the new ions leaching channels. Overall, the cow manure biochar (650 degrees C) at the rate of 3% treatment showed maximum efficiency on soil salinity, fertility, physicomechanical properties, and crop yield. The biochar amendment improved coastal soil by ameliorating soil pore space and structure, improving soil tillage operation and rice yield, decreasing salt stress, and reducing mechanical strength.

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