应用生态学报2015，Vol.26Issue(1)：108-112,5.
紫色土坡耕地C、P与微生物生物量C、P对不同施肥的响应
Soil C, P and microbial biomass C, P response to different fertilizations in the hillslope cropland of purple soil
摘要
Abstract
The aim of this study is to explore the changes and coupling characteristics of carbon (C),phosphorus (P) and microbial C,P in a hillslope cropland of purple soil.The results showed that total organic carbon (TOC) ranged from 90.8 to 100.8 g · kg-1under organic fertilizer or straw combined with inorganic fertilizer treatments (including N,NP and NPK) as compared with nitrogen (N) application only (62.2 g · kg-1).Total phosphorus (TP) ranged from 0.65 to 0.84 g · kg-1 in organic combined with inorganic fertilization treatments,and that under straw combined with inorganic fertilizer treatments was 23％-38％ of organic fertilizer combined with inorganic fertilization treatments.The microbial biomass phosphorus (MBP) under N fertilizer was significantly decreased as compared with combined fertilization treatments.The ratios of microbial biomass carbon (MBC) to MBP under combined fertilization treatments were between 5 to 26,and the TOC/TP ratios under organic fertilizer and straw combined treatments were between 92 to 137 and 296 to 653,respectively,while those under N fertilizer treatment were 59 and 2000,respectively.The results indicated that combined organic and inorganic fertilizers would be helpful for enhancing P availability and increasing its potential capacity in purple soil.关键词
紫色土/有机碳/微生物生物量碳/磷/微生物生物量磷/施肥Key words
purple soil/ organic carbon/ microbial biomass C/ phosphorus/ microbial biomass P/fertilization分类
资源环境引用本文复制引用
高扬,徐亚娟,彭焱,金晶,朱波,于贵瑞..紫色土坡耕地C、P与微生物生物量C、P对不同施肥的响应[J].应用生态学报,2015,26(1):108-112,5.基金项目
国家自然科学基金项目(31200404)、中国科学院成都山地灾害与环境保护研究所山地表生过程与生态调控重点实验室开放基金项目(Y2R20050DD)和中国科学院地理科学与资源研究所“秉维优秀青年人才”项目(2012RC202)资助. （31200404）
