滴灌施肥对两种典型作物系统土壤N2O排放的影响及其调控差异

雷豪杰,李贵春,柯华东,魏崃,丁武汉,徐驰,李虎

Analysis of Impacts and Regulation Differences on Soil N2O Emissions from Two Typical Crop Systems Under Drip Irrigation and Fertilization

LEI HaoJie,LI GuiChun,KE HuaDong,WEI Lai,DING WuHan,XU Chi,LI Hu

表1 供试农田土壤基础理化性质

Table 1 Physical and chemical properties of soil foundation of the tested farmland

试验点 Site 有机质 SOM (g·kg-1) pH 有效磷 Available P (mg·kg-1) 速效钾 Available K (mg·kg-1) 容重 Bulk density (g·cm-3) 全氮 Total N (g·kg-1) 铵态氮 NH4+-N (mg·kg-1) 硝态氮 NO3--N (mg·kg-1) 顺义Shunyi 14.3 7.2 1.22 128.1 1.69 11.7 3.2 147.5 桓台Huantai 19.6 — 29.81 167.9 1.58 — 0.7 18.4