有机无机肥混施对水稻土CH_4排放的影响  

Effect of combined application of organic and inorganic fertilizers on CH_4emission from paddy soil.

作　　者：刘可星[1] 廖宗文[1] 游植麟 

机构地区：[1]华南农业大学资源环境学院,广州510642

出　　处：《应用生态学报》1997年第5期491-494,共4页Chinese Journal of Applied Ecology

基　　金：国家科委年度研究计划资助项目!(K 90 0 5 2 0 0 4 )

摘　　要：通过网室水稻盆栽试验 ,探讨几种有机无机肥混施方式对CH4排放的影响 .结果表明 ,水稻土CH4排放有明显的逐日变化 ,在水稻分蘖末期和抽穗前期出现CH4排放高峰 .不同有机无机肥混施方式对CH4排放的影响明显 ,最高和最低的CH4排放量分别为 8.1 2和 5.72 g·m- 2 ,两者相差 42 .0 % .粒状有机无机复肥的CH4排放量高 ,但稻谷产量也高 ,因而其单位稻谷产量的CH4排放量反而较低 .Pot experiment with a paddy soil was conducted to study the effect of several combined applications of organic and inorganic fertilizers on CH 4 emission.The results indicate that the CH 4 emission showed a pronounced diurnal variation,and the peaks occured at late tillering and early heading stages.Different combined applications of organic and inorganic fertilizers showed an obvious effect on CH 4 emission,and the highest and lowest emissions were 8.12 and 5.72 g·m -2 respectively,with a 42% difference.Granulated organic inorganic fertilizer induced a high CH 4 emission,but the rice yield was also high.Instead,the CH_4 emission of per unit rice yield was lower.

关 键 词：水稻土 CH4排放 有机无机复肥 

分 类 号：S154.1[农业科学—土壤学] S143.6[农业科学—农业基础科学]