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作 者 ：陈苇,卢婉芳,段彬伍,Wassmann R,Lantin R S

期 刊 ：生态学报 2001年 21卷 2期 页码：265~270

关键词：稻田；甲烷排放；溶解甲烷；猪粪；沼气渣；

Keywords:rice field, methane emission, soluble methane, pig manure, biogas sludge,

摘 要 ：随着环境温度的升高 ,稻田甲烷排放通量增加。早稻期间甲烷排放通量随着水稻生育期的增加而逐步加快 ,而晚稻甲烷排放主要集中在水稻生长的前中期 ,而且排放量很高。一天中甲烷排放具有很强的周期性 ,在 6:0 0～ 8:0 0时 ,甲烷排放通量进入谷底 ,1 4 :0 0时甲烷排放通量达到峰值。稻田甲烷排放通量与土壤 5cm处的温度及土壤水溶解甲烷含量具有较高的相关性。猪粪和沼气渣的施用分别提高稻田甲烷排放量 2 2 .1 4 %和 4 .4 0 %。在早稻期间 ,施用猪粪和沼气渣分别提高土壤水溶解甲烷含量 4 0 .3%和 1 1 .9% ,而晚稻期间仅分别提高 2 3.9%和 5.0 4 %。

Abstract:With the increase of environmental temperature,the rate of methane emission is increased in ricefields.It is increased gradually with the processing of plant growing in the early rice.Most of methane is emitted with high rates during the early stage of plant growth in the late rice.The diel methane emission showed a regular pattern,with the valley at 6:00~8:00 and the peak at 14:00.This rate is closely related to both the soil temperature and the content of the water\|soluble methane at 5cm depth.The applic...

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