膨润土与芽孢杆菌配施对毛乌素沙地土壤剖面养分蓄持的影响

柴雅心; 聂扬眉; 田静; 韦革宏; 王红雷

文章摘要

柴雅心,聂扬眉,田静,韦革宏,王红雷.膨润土与芽孢杆菌配施对毛乌素沙地土壤剖面养分蓄持的影响[J].农业环境科学学报,2024,43(10):2330-2338.

膨润土与芽孢杆菌配施对毛乌素沙地土壤剖面养分蓄持的影响

Combined application effects of bentonite and bacillus on nutrient retention in Mu Us Sandy Land soil profiles

投稿时间：2023-12-04

DOI：10.11654/jaes.2023-1028

中文关键词: 毛乌素沙地膨润土芽孢杆菌理化性质土柱淋溶

英文关键词: Mu Us Sandy Land bentonite bacillus physicochemical property soil column leaching

基金项目:国家自然科学基金项目(42077048);国家重点研发计划青年科学家项目(2021YFD1900500)

作者	单位	E-mail
柴雅心	西北农林科技大学水土保持科学与工程学院(水土保持研究所), 陕西杨凌 712100
聂扬眉	西北农林科技大学水土保持科学与工程学院(水土保持研究所), 陕西杨凌 712100
田静	西北农林科技大学水土保持科学与工程学院(水土保持研究所), 陕西杨凌 712100
韦革宏	西北农林科技大学生命科学学院, 作物抗逆与高效生产全国重点实验室, 陕西农业与环境微生物重点实验室, 陕西杨凌 712100
王红雷	西北农林科技大学水土保持科学与工程学院(水土保持研究所), 陕西杨凌 712100 中国科学院水利部水土保持研究所, 陕西杨凌 712100	wanghonglei@nwsuaf.edu.cn

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中文摘要:

为探究膨润土与芽孢杆菌配施对沙地土壤氮磷钾养分释放与蓄持作用的影响，开展田间原位和室内淋溶试验，探究两种模式（膨润土单施、膨润土+芽孢杆菌混施）对沙地土壤基础理化特性、剖面养分状况及膨润土不同添加水平（0.50%、1.00%、3.00%）对沙地土壤养分淋溶的影响。结果表明：3种膨润土添加水平显著提升沙化土壤含水率，增幅为32.14%~99.41%；膨润土+芽孢杆菌混施稳步提升了土壤速效养分含量，尤其是3.00%的膨润土+芽孢杆菌处理组提升最显著，增幅为56.76%~87.24%；膨润土降低土壤速效养分淋溶并增强土壤保肥能力，3.00%膨润土处理显著降低土壤速效钾淋失量，降幅为46.38%。研究表明，膨润土配施芽孢杆菌能增强沙地土壤水分和养分有效性，其中，3.00%膨润土配施芽孢杆菌能显著提升沙化土壤有效磷和速效钾含量。

英文摘要:

To explore the combined application effects of bentonite and bacillus on the release and retention of nitrogen, phosphorus and potassium nutrients in sandy soil, field in-situ and indoor leaching experiments were conducted. Additionally, the effects of two modes （single application of bentonite and mixed application of bentonite and bacillus）on the basic physical and chemical properties of sandy soil, profile nutrient status, and different addition levels of bentonite（0.50%, 1.00%, and 3.00%）on the leaching of sandy soil nutrients were explored. The results showed that the three bentonite addition levels significantly increased the moisture content of sandy soil by 32.14% -99.41%. The mixed application of bentonite + bacillus steadily increased the soil available nutrient content, especially in the 3.00% treatment group, which increased by 56.76%-87.24%. Bentonite reduced the leaching of soil available nutrients and enhanced soil fertility. The 3.00% treatment significantly reduced the leaching loss of soil available potassium by 46.38%. In sandy soils, bentonite combined with bacillus can enhance the effectiveness of soil moisture and nutrients and the 3.00% bentonite combined with bacillus can increase the content of available phosphorus and potassium.

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