[开放式空气CO₂浓度增高（FACE）对稻麦轮作下土壤微生物生物量的影响]

[Effects of free-air CO2 enrichment (FACE) on soil microbial biomass under rice-wheat rotation].

作者信息

Li Yang, Xu Guoqiang, Huang Guohong, Shi Yi

机构信息

Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang.

出版信息

Ying Yong Sheng Tai Xue Bao. 2004 Oct;15(10):1847-50.

PMID:15624820

Abstract

The effect of CO2 enrichment on soil microbial biomass in 0-5 cm and 5-10 cm soil layers under rice-wheat rotation was studied under the conditions of routine cultivation, irrigation and fertilization. The results showed that FACE treatment could significantly increase the amount of soil bacteria in 0-5 cm and 5-10 cm soil layers during rice jointing stage and wheat wintering and ripening stages. Elevated CO2 only significantly increased the amount of soil fungi in 0-5 cm soil layer during rice ripening stage. During the whole period of rotation, the amount of soil bacteria was greater than that of soil fungi.

摘要

在常规种植、灌溉和施肥条件下，研究了稻麦轮作中二氧化碳浓度升高对0-5厘米和5-10厘米土层土壤微生物生物量的影响。结果表明，自由空气二氧化碳浓度增高（FACE）处理可显著增加水稻拔节期、小麦越冬期和成熟期0-5厘米和5-10厘米土层的土壤细菌数量。二氧化碳浓度升高仅在水稻成熟期显著增加了0-5厘米土层的土壤真菌数量。在整个轮作期间，土壤细菌数量大于土壤真菌数量。