微生物生物量C、土壤呼吸的季节性变化与黑土稻田 - 应用生态学报.PDF

2003 12 14 12 CHINESE JO RNAL OF APPLIED ECOLOGY,Dec. 2003,14( 12)∃2278~ 2280 C * * * 梁 巍 岳 进 吴 吉力 史 奕 黄国宏 梁战备 ( , 110016) C. ,,C ( P 0. 05) . . , 32.5% . . ,C . CH C 4 1001- 9332(2003) 12- 2278- 03 S181 A Seasonal variations of soil microbial biomass, respiration rate and CH emission in black earth rice fields. 4 LIANG Wei,Y E Jin, W Jie,SHI Yi,H ANG Guohong,LIANG Zhanbei (K ey L aboratory of Terrestrial E cological Process, I nstitute of App lied Ecology, Chinese A cademy of Sciences, Sheny ang 110016, China) . Chin . . App l. Ecol .,2003, 14( 12) :2278~ 2280. The measurements of soil microbial biomass C,respiration rate and CH emissions during one rice growth period 4 in black earth ricefields showed that the soil microbial biomass C and respiration ratewere depressed significantly by the application of slowreleasing urea at the early stage of rice growth period (P 0.05) , but almost not af fected by intermittent irrigation. The CH emission was decreased by 32.5% in the intermittent irrigation treat 4 ments, but not significantly affected by the application of slowreleasing urea,compared to the control. It was sig nificantly related to soil microbial biomass C in slowreleasing urea treatments. Key words Black earth, CH emission, Microbial biomass, Soil respiration. 4 1 2 , 21 [ 9] (47!26∀N, CO2,CO2 23 , . 126!38∀E) . . : pH