文献类型： 外文期刊

作者： Yu, Y. ¹ ; Odindo, A. O. ² ; Xue, L. ¹ ; Yang, L. ¹ ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Jiangsu, Peoples R China

2.Univ KwaZulu Natal, ZA-3209 Scottsville, South Africa

期刊名称：2ND INTERNATIONAL CONFERENCE ON AGRICULTURAL AND BIOLOGICAL SCIENCES (ABS 2016)

ISSN： 1755-1307

年卷期： 2016 年 41 卷

页码：

收录情况： SCI

摘要： Leaching is a major path for chemical nitrogen fertilizer loss from in vegetable soil, which would destroy soil pH buffering capacity soil and result in acidification. It has been a common phenomenon in Tai Lake Region, China. However, few study focused on the change soil pH buffering capacity, especially the effect of soil amendment on pH buffering capacity. In this study, a pot experiment was conducted to research the effects of biochar addition to a vegetable soil on nitrogen leaching and pH buffering capacity with pakchoi (B.chinensis L.) growth as the experimental crop. The results showed that biochar could significantly increase the pakchoi nitrogen utilization efficiency, decrease 48%-65% nitrogen loss from leaching under the urea continuous applied condition. Biochar also could effectively maintain the content of soil organic matter and base cations. Therefore, it rose up soil pH buffering capacity by 9.4%-36.8% and significantly slowed down acidification rate. It was suggested that 1%-2% addition ratio was recommended from this study when used as similar soil condition.