红壤性水稻土甲烷排放规律研究 Ⅰ.不同稻作制模拟小区甲烷排放规律  

Methane Emission From Paddy Soil Derived From Red Earth under Different Cropping Systems Ⅰ.Methane Emission From Imitation Field Under Different Cropping Systems

作　　者：周清[1] 荣湘民[1] 黄运湘[1] 胡瑞芝[1] 朱红梅[1] 张杨珠[1] 袁正平[1] 肖永兰[1] 

机构地区：[1]湖南农业大学资源环境学院,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2000年第1期72-75,共4页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：中国科学院南京土壤研究所项目!(97B0 24);湖南省教委资助!(97B0 24)

摘　　要：为了有效控制稻田甲烷排放量 ,保护生态环境 ,采用静态箱技术在模拟池中进行了不同稻作制处理甲烷排放通量动态变化的试验 .结果表明 ,稻田甲烷的年排放总量以稻 -稻 -冬泡制处理最高 ,为 1498.5 2 kg/ hm2 ,稻 -稻 -绿肥制处理居中 ,为 1437.6 6 kg/ hm2 ,稻 -稻 -油菜制处理最低 ,为 12 30 .95 kg/ hm2 .晚稻甲烷排放量多于早稻 .3种处理早稻的最大甲烷排放峰值出现在分蘖盛期 ,晚稻的出现在返青期 .讨论了稻田甲烷排放与环境温度及稻田土壤无定形氧化铁含量的关系 ,二者变化趋势基本一致 ,但无明显相关性 .The methane (CH 4) emission from paddy soil derived from red earth under 3 rice based cropping systems was studied in imitation field by using collector boxes. The results showed that paddy soil treated with “early rice-late rice-flooded fallow in winter” had the highest annual CH 4 emission (1 498.52 kg/hm 2),and that treated with “early rice late rice green manure crop in winter” had the second highest annual emission (1 437.66 kg/hm 2), and that treated with “early rice late rice rapeseed in winter” the lowest (1 230.95 kg/hm 2). The CH 4 emission during the late rice growth period is higher than that during the early rice growth period.The CH 4 emission during the early rice growth period of the 3 treatments reached their peaks at tillering's prime stage, while that during late rice growth period of the 3 treatments reached their peaks at green stage. In addition,the relations between CH 4 emission and the temperature in soil and the amorphous ironoxides in soil were also discussed respectively,the changes of the two were close to each other but there was no obvious relativity in them.

关 键 词：耕作制度 水稻土 甲烷 排放规律 红壤 环境保护 

分 类 号：X171[环境科学与工程—环境科学] S511.051[农业科学—作物学]