有机物料施用量对土壤CO_2排放速率的影响  

Influence of organic material amount on CO_(2) released rate from the soil

作　　者：严红[1] 魏湜[2] 张雷[3] 夏国芳[1] 戴先锋[1] 王帆[1] 

机构地区：[1]大连大学环境与化学工程学院,辽宁大连116622 [2]东北农业大学农学院,黑龙江哈尔滨150030 [3]黑龙江农业科学院大豆研究所,黑龙江哈尔滨150086

出　　处：《大连大学学报》2005年第4期46-50,共5页Journal of Dalian University

基　　金：中国科学院重大项目"中国陆地及近海生态系统碳收支的研究"的课题"农田生态系统碳循环过程的研究"(KZCX1-SW-01-05)

摘　　要：本试验选用有机碳含量不同的黑土,研究了有机物料施用量对土壤CO2排放速率的影响.研究表明,施用有机物料以后CO2排放速率明显增加,5%和3%处理CO2排放速率增加幅度显著高于2%和1%处理.有机碳分解初期CO2排放速率增加较快,波动性大,后期趋于稳定,其相对值大小随有机物料施用量及土壤有机碳含量增加而增加,即6号土>5号土>4号土>1号土.3号土性质与其它土壤样品略有不同,CO2排放速率偏高.In this paper,the incubating experiments were conducted to study the effects of the organic material amount on CO2 released rate from the soil. Tile experimental results showed that when organic material was applied, the CO2 released rate from soil was obviously increased, and for the treatment of 5 % and 3% ,the increasing range was much higher than that of the treatment of 2% and 1%. The increase of CO2 released rate was fast at the beginning period and the fluctuation was significant too. But at later stage it was stable. The relative value was increasing with the amount of organic material and the soil organic carbon content,namely sample 6 〉 sample 5 〉sample 4 〉 sample 3 〉 sample 2 〉 sample 1. But the value of sample 3 was much higher than the others＇ ,because its physieal and chemical properties were different from the others＇.

关 键 词：有机物料 CO2排放速率 黑土 有机碳 

分 类 号：S153[农业科学—土壤学]