期刊论文

中文

生态学报

1000-0933

2004

24

8

1695-1699

10.3321/j.issn:1000-0933.2004.08.016

湖南省科技厅科研项目

本校为第一机构

采用厌氧培养箱技术,用最大或然数计数法(MPN法)和滚管法同时测定稻-鸭复合系统和常规稻作系统早稻不同生育期土壤中的产甲烷细菌数量.结果表明:(1)两系统产甲烷菌数量具有明显的季节变化规律.水稻返青期前,两系统的产甲烷菌数量相差不大,随着水稻生育期的推进,两处理的产甲烷菌数量逐渐增加,均在分蘖盛期明显增高,孕穗期达到最高,乳熟期又显著减少 ,生长后期又有所回升.(2)稻田围栏养鸭能减少稻田中的产甲烷菌数量,特别是减少了稻田甲烷排放高峰期的产甲烷菌数量.在水稻分蘖盛期和孕穗期,MPN计数法中,稻-鸭复合生态系统低于常规稻作系统20.0%～96.9%;滚管法计数中,前者比后者降低33.3%～98 .1%...

The study was focused on the relationship between the intensify rice-duck planting and its effects on the amount of methane emission from the paddy field. During the study,the author took a careful study and appraisal of the basis of rice-duck complex planting and breeding pattern,and how it could evidently decrease the total amount of methane emission present on the paddy field.The study also covers the amount of methanagens present and the influence of the substrates on it in the rice-duck complex ecosystem. It is aimed at expounding the mech...