安徽农业科学2018，Vol.46Issue(11)：109-111,3.
不同水分培养下添加生物质炭湿地土壤pH的变化特征
The Effects of Biochar on Wetland Soil pH under Different Water Treatments
摘要
Abstract
[Objective]To study the change characteristics of soil pH in wetlands under different water conditions.[Method]Soils were collected from estuary wetland of Shiwuli River in the Chaohu Lake region.Biochars with four treatment types(washed and unwashed;350 ℃and 600 ℃) were added to wetland soils,and the experiment sets three kinds of water treatment,dry-wet alternate(J),75%field capacity(75%)and flooded (Y).The soil column simulated experiments were adopted to measure and study the effect of biochar on pH of wetland soil under three different water treatments for six periods(120 days every period).[Result]As time went on,soil pH in the control group decreased first and then in-creased under the condition of dry-wet alternate(J)and 75% field capacity(75%).And adding biochar could reduce pH of the soil sample and increase its acidity.The trend of soil pH change in flooded culture was"W",and the addition of biochar had influence on it,but there was no uni-form rule.During the whole period,the soil pH of the control group was CKY>CKJ>CK75%.After adding biochar,the pH of soil sample was shown as: Y>J and 75%.The trend of soil pH change adding washed and unwashed biochar produced at the same temperature was the same un-der the same water condition.[Conclusion]The study provides reference for the improvement of soil acidity and alkalinity using biomass charcoal.关键词
湿地土壤/生物质炭/不同水分条件/pHKey words
Wetland soil/Biochar/Different water treatments/pH分类
农业科技引用本文复制引用
张群,张平究,杜永固,于小彦..不同水分培养下添加生物质炭湿地土壤pH的变化特征[J].安徽农业科学,2018,46(11):109-111,3.基金项目
国家自然科学基金项目(41301249). （41301249）
