文献类型： 外文期刊
作者： Liu, Defu 1 ; Feng, Zhenyue 1 ; Zhu, Hongde 1 ; Yu, Lihe 1 ; Yang, Kejun 1 ; Yu, Song 1 ; Zhang, Yifei 1 ; Guo, Wei 1 ;
作者机构： 1.Heilongjiang Bayi Agr Univ, Daqing 163319, Peoples R China
2.Heilongjiang Engn Technol Res Ctr Crop Straw Util, Key Lab Modern Agr Cultivat & Crop Germplasm Impr, Daqing 163319, Peoples R China
3.Heilongjiang Acad Agr Sci, Daqing Branches, Harbin 163316, Heilongjiang, Peoples R China
关键词： Alkaline soil; Biochar; Plant growth; Soil properties
期刊名称：BIORESOURCES （ 影响因子：1.614； 五年影响因子：1.923 ）
ISSN： 1930-2126
年卷期： 2020 年 15 卷 1 期
页码：
收录情况： SCI
摘要： Pot experiments were conducted to investigate the impact of biochar loading level on soybean growth and physico-chemical properties of alkaline soil. Biochar derived from corn straw was mixed with alkaline soil at 0%, 2.5%, 5%, and 10% loading levels and exposed to the natural elements. Soybean was used as the test crop. The results indicated that a single application of biochar positively and significantly improved soybean productivity and quality attributes of the tested alkaline soil. Soybean yield peaked at 5% loading level, but it declined at 10% loading. Applications of biochar at 5% and 10% loading significantly increased total soil porosity by 4.14% and 5.09%, and decreased the soil pH value by 0.07 and 0.24 units, respectively. Biochar addition significantly increased water holding capacity, total organic carbon content, total nitrogen, Olsen-P, available potassium, and cation exchange capacity. The results indicated that applications of corn straw biochar to alkaline soil improved soybean growth and promoted the physico-chemical properties of alkaline soil. However, the negative effects of increased C:N ratios and soil exchange sodium percentages at higher biochar loading levels should be taken into account when applying biochar as amendments to alkaline soils.
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