生物炭对温室黄瓜酸化土壤的改良效应  

Improvement Effects of Biochar on Acidified Soil in Cucumber Greenhouse

作　　者：曾晓玉 曹霞[1] 刘玉豪 贺字典 武春成[1] ZENG Xiaoyu;CAO Xia;LIU Yuhao;HE Zidian;WU Chuncheng(College of Horticulture,Hebei Normal University of Science&Technology,Qinhuangdao Hebei 066600,China;College of Agronomy and Biotechnology,Hebei Normal University of Science&Technology,Qinhuangdao Hebei 066600,China)

机构地区：[1]河北科技师范学院园艺科技学院,河北秦皇岛0666002 [2]河北科技师范学院农学与生物科技学院,河北秦皇岛066600

出　　处：《河北科技师范学院学报》2019年第4期18-23,共6页Journal of Hebei Normal University of Science & Technology

基　　金：河北省现代农业产业体系项目(项目编号:HBCT2018030209);河北省重点研发计划项目(项目编号:19226922D);河北省重点研发计划项目农业关键共性技术攻关专项(项目编号:18226507D)

摘　　要：为确定生物炭对酸化土壤的改良效果,以pH 5.63和pH 5.10的温室黄瓜连作后的土壤为研究对象,分别添加不同比例的生物炭,m(生物炭)∶m(土壤)=1∶100,3∶100,5∶100,以不添加生物炭的土壤为对照。采用温室内塑料钵培养的方法,研究不同生物炭添加量对酸化土壤改良效应。结果表明,不同生物炭添加量都可以提高酸化土壤的pH,阳离子交换量、交换性盐基总量和有机质的质量,降低土壤交换性酸总量,交换性Al3^+的量和交换性H^+的量。土壤pH与土壤交换性酸总量、交换性Al^3+的量和交换性H^+的量呈负相关;与土壤阳离子交换量、有机碳的质量和交换性盐基总量呈正相关。培养结束后,pH 5.63的土壤m(生物炭)∶m(土壤)=1∶100,3∶100,5∶100分别比对照的pH提高了8.5%,11.2%,17.2%;而pH 5.10的土壤m(生物炭)∶m(土壤)=1∶100,3∶100,5∶100,分别比对照的pH提高了13.5%,18.0%,20.4%。2种土壤均以m(生物炭)∶m(土壤)=5∶100处理效果最显著,而且对酸化严重的土壤改良效果更明显。In order to determine the improvement effect of biochar on acidified soil,the soils after continuous cropping of greenhouse cucumbers at pH 5.63 and pH 5.10 were taken as the materials,and different proportions of biochar were added,m(biochar)∶m(soil)=1∶100,3∶100,5∶100,the soil without biochar added as the control.The effects of different biochar contents on soil acidification were studied by cultivating plastic rafts in the cucumber greenhouse.The results suggested that different concentrations of biochar increased the pH,cation exchange capacity,organic carbon content and total exchangeable base of the acidified soil.Also,it reduced the total amount of soil exchangeable acid,exchangeable Al^3+content and exchangeable H+content.Soil pH was negatively correlated with the soil exchangeable acid,exchangeable Al^3+content and exchangeable H+content,while it was positively correlated with soil cation exchange capacity,organic carbon content and total exchangeable base.By the end of cultivation,the pH5.63 of m(biochar)∶m(soil)=1∶100,3∶100,5∶100 increase by 8.5%,11.2%and 17.2%,respectively,compared with the control.Furthermore,the pH5.10 of m(biochar)∶m(soil)=1∶100,3∶100,5∶100 increase by 13.5%,18.0%and 20.4%,respectively,compared with the control.Adding m(biochar)∶m(soil)=5∶100 to the two soils had the most significant effects,and the effects of improving the acidified soil was more obvious.

关 键 词：酸化土壤 生物炭 PH 交换性酸 

分 类 号：S156.99[农业科学—土壤学]