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不同施肥方式对灌漠土土壤有机碳、无机碳和微生物量碳的影响
引用本文:曾骏,董博,张东伟,包兴国,郭天文.不同施肥方式对灌漠土土壤有机碳、无机碳和微生物量碳的影响[J].水土保持通报,2013,33(2):35-38.
作者姓名:曾骏  董博  张东伟  包兴国  郭天文
作者单位:1. 甘肃省农业科学院旱地农业研究所,甘肃兰州730070;农业部西北作物抗旱栽培与耕作重点实验室,甘肃兰州730070;甘肃省旱作区水资源高效利用重点实验室,甘肃兰州730070
2. 甘肃省农业科学院旱地农业研究所,甘肃兰州730070;农业部西北作物抗旱栽培与耕作重点实验室,甘肃兰州730070
3. 甘肃省农业科学院旱地农业研究所,甘肃兰州,730070
4. 甘肃省农业科学院旱地农业研究所,甘肃兰州730070;甘肃省旱作区水资源高效利用重点实验室,甘肃兰州730070
基金项目:国际植物营养研究所(IPNI)项目"甘肃主要农业土壤养分管理与平衡施肥"
摘    要:利用武威市白云试验站18a长期定位试验资料,研究了不同施肥条件下,土壤有机碳、无机碳和微生物量碳在0-40 cm土层的变化状况.结果表明,氮肥与有机肥长期配合施用和长期施用农肥可以在0 20 cm土层增加土壤有机碳含量,减少土壤中的无机碳含量,增加土壤微生物量碳含量;单施秸秆可增加土壤有机碳,而对无机碳和微生物量碳影响无明显差异;长期施用氮肥对土壤的有机碳、无机碳和微生物量碳均无明显差异.土壤有机碳与土壤无机碳含量呈显著负相关关系,而与土壤微生物量碳呈显著正相关关系.

关 键 词:长期施肥  土壤有机碳  土壤无机碳  土壤微生物量碳
收稿时间:2012/5/20 0:00:00
修稿时间:2012/6/13 0:00:00

Effect of Long-term Fertilization on Organic,Inorganic and Microbial Biomass Carbon in Irrigated Desert Soils
ZENG Jun,DONG Bo,ZHANG Dong-wei,BAO Xing-guo and GUO Tian-wen.Effect of Long-term Fertilization on Organic,Inorganic and Microbial Biomass Carbon in Irrigated Desert Soils[J].Bulletin of Soil and Water Conservation,2013,33(2):35-38.
Authors:ZENG Jun  DONG Bo  ZHANG Dong-wei  BAO Xing-guo and GUO Tian-wen
Institution:Dryland of Agriculture Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Research Center for Regional Development and Information Agriculture, Lanzhou, Gansu 730070, China;Key Laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China;Dryland of Agriculture Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Research Center for Regional Development and Information Agriculture, Lanzhou, Gansu 730070, China;Dryland of Agriculture Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Dryland of Agriculture Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Dryland of Agriculture Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Key Laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China
Abstract:Based on a 18-year-long experiment conducting at Baiyun experiment station in Wuwei City,theeffects of long-term fertilization on soil organic,inorganic and microbial biomass carbon in 0-20cm layer ofirrigated desert soil were analyzed.The results showed that long-term combined application of nitrogen andorganic fertilizer,as well as manure application led to increases of soil organic and microbial biomass carboncontents,while reduced soil inorganic carbon contents.Applying straw alone increased soil organic carbon,but had no significant impacts on inorganic and microbial biomass carbon levels.Long-term application of nitrogen fertilizer had no significant influence on soil organic,inorganic and microbial biomass carbon contents.All results revealed that soil organic carbon contents negatively correlated with inorganic carbon contents,and positively with soil microbial biomass carbon contents.
Keywords:long-term fertilization  soil organic carbon  soil inorganic carbon  soil microbial biomass carbon
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