氮肥对室内和大田条件下作物秸秆分解和养分释放的影响

张学林,周亚男,李晓立,侯小畔,安婷婷,王群

Effects of Nitrogen Fertilizer on Crop Residue Decomposition and Nutrient Release Under Lab Incubation and Field Conditions

ZHANG XueLin,ZHOU YaNan,LI XiaoLi,HOU XiaoPan,AN TingTing,WANG Qun

表3 室内培养条件下小麦和玉米秸秆干重剩余率（L）的变化

Table 3 Dynamics of biomass remaining rate during wheat and maize residues decomposition periods under lab incubation conditions

作物 Crop 处理 Tr 30 d 60 d 90 d 120 d 150 d 180 d 砂姜黑土ST 潮土 FT 砂姜黑土ST 潮土 FT 砂姜黑土ST 潮土 FT 砂姜黑土ST 潮土 FT 砂姜黑土ST 潮土 FT 砂姜黑土ST 潮土 FT 小麦 Wheat SCK 70.5±0.9a 73.1±1.5b 50.3±2.2a 47.9±1.7a 31.4±2.6a 24.8±1.4b 25.7±5.4a 18.1±1.4a 23.3±3.9a 15.9±1.2a 22.3±2.1a 14.1±1. 5b SN180 69.8±0.6a 70.8±1.7b 47.9±6.1a 45.8±1.6a 29.4±1.8a 20.3±1.7a 23. 5±1.5a 15.8±1.6a 22. 8±3.4a 14.3±1.3a 21.7±1.3a 13.6±0.9b SN360 69.4±4.2a 66.9±2.8a 47.4±6.0a 45.5±2.7a 30.1±1.4a 24.5±1.4b 23.2±1.8a 16.1±1.3a 21.3±1.2a 13.9±2.3a 20.3±1.4a 11.4±1.0a t -test NS NS t = 9.3*** t = 6.8*** t =8.8*** t = 20.5 玉米 Maize SCK 47.8±2.2a 52.0±2.7a 30.3±1.7a 33.4±1.4a 13.8±0.8a 13.6±0.8a 11.0±1.2a 9.4±0.8a 6.1±0.5a 6.3±0.6a 5.4±0.1a 5. 7±0.3a SN180 50.2±0.6ab 52.5±2.8a 32.9±0.7b 36.0±2.3b 15.2±1.5a 13.6±1.4a 10.8±0.5a 12.6±1.4b 6.9±1.0a 9.3±1.0b 6.3±0.2b 6.3±0.1b SN360 50.98±1.6b 51.8±2.0a 30.8±1.0a 37.8±0.8b 14.9±0.6a 16.0±1.4b 12.6±0.6b 12.7±1.3b 9.6±0.9b 9.7±0.9b 7.3±0.2c 6.5±0.1b t-test t = -3.0* t = -5.8*** NS NS NS NS