茶叶学报2016，Vol.57Issue(2)：64-70,7.
添加生物质炭对酸性茶园土壤 pH 和氮素转化的影响
Effect of Biochar Addition on pH and Nitrogen Transformation in Acidic Soil at Tea Plantations
摘要
Abstract
Effect of biochar addition on pH and nitrogen transformation in the acidic red and yellow soils at tea plantations was studied by an aerobic incubation experiment in the lab. Biochar made from clipped tea branches was added to the soils at a rate of H0(0t·hm-2 ),H1(8 t·hm-2 ),H2(16 t·hm-2 ),H3(32 t·hm-2 ),or H4(64 t· hm-2 ). The results showed that,the pH of the red soil raised 0.24 to 1.20 units and that of the yellow soil raised 0.26 to 1.34 units with the biochar. On the other hand,the nitrogen mineralization,net nitrogen mineralization rate,and net mineralization rate,especially the NO-3 -N content,of the soils were significantly reduced. The nitrification in soil was inhibited by the additions,and the effect was greater with increasing biochar. Since the nitrogen mineralization,and the rates of mineralization of the red soil were higher than those of the yellow soil, which showed a negative net reduction with the biochar additions,it indicated that a same biochar application would result in much greater effection the nitrogen transformation in the red than the yellow soil. It appeared that, depending upon the application rate and the soil type,by incorporating biochar varying degrees of the inhibitory effect on the nitrogen mineralization and nitrification in the plantation soils could be achieved.关键词
茶枝生物质炭/酸性茶园土壤/pH 值/铵态氮/硝态氮/净氮转化速率Key words
tea stalk biochar/acidic tea garden soil/pH/NH +4 -N/NO-3 -N/nitrogen transformation rate分类
资源环境引用本文复制引用
陈玉真,王峰,吴志丹,尤志明,王义祥..添加生物质炭对酸性茶园土壤 pH 和氮素转化的影响[J].茶叶学报,2016,57(2):64-70,7.基金项目
福建省自然科学基金（2016J01120）；福建省公益类科研院所专项（2014R1012－10、2015R1012－5、2014R1017－3）；福建省科技项目（2014Y0048）。 （）
