生态学报2018，Vol.38Issue(11)：4037-4044,8.DOI:10.5846/stxb201706161097
施用生物炭基肥对喀斯特石灰土磷元素特性的影响
Effects of biochar-based fertilizer on phosphorus content of karst calcareous soil
摘要
Abstract
This study conducted a pot experiment using karst calcareous soil from Guizhou province,focusing on the effects of biochar-based fertilizer (made from rice-husk-derived biochar,pig manure compost,and NPK fertilizer) on the contents of various types of soil phosphorus,soil alkaline phosphatase activity,and biomass of black locust seedlings.Ten treatments were set up:CK,M,F,MF,RH1MF,RH2MF,RH4MF,RH8MF,RH4M,and RH4F (CK is control,M is compost,F is NPK fertilizer,RH is rice-husk-derived biochar and the number is the amount of biochar in the treatment based on the ratio of biochar to soil).Our results showed that the application of biochar-based fertilizer could significantly increase the contents of soil total phosphorus,available phosphorus,organic phosphorus,microbial biomass phosphorus,and seedling biomass,with the strongest effects with the highest biochar application rate (RH8MF).The above 4 different types of phosphorus showed highly significant positive correlations (P＜0.01) with each other.The soil alkaline phosphatase activity was highest with the treatments with the medium biochar application rates (RH2MF and RH4MF),at 82.7％ and 63.4％ higher than CK respectively.In conclusion,biochar-based fertilizer application,especially at higher biochar addition rates,significantly increased phosphorus content of karst calcareous soil and improved the low-content status,so as to improve the effects of ecological restoration of young artificial woodlands in karst areas.关键词
石灰土/生物炭基肥/磷/碱性磷酸酶Key words
calcareous soil/biochar-based fertilizer/phosphorus/alkaline phosphatase引用本文复制引用
朱倩,周之栋,施毅,吴永波,薛建辉..施用生物炭基肥对喀斯特石灰土磷元素特性的影响[J].生态学报,2018,38(11):4037-4044,8.基金项目
国家重点研发计划重点专项(2016YFC0502605) （2016YFC0502605）
国家林业局“948”项目(2014-4-24) （2014-4-24）
“十二五”国家科技支撑计划(2015BAD07B0404) （2015BAD07B0404）
江苏高校优势学科建设工程资助项目(PAPD) （PAPD）
