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1 室内培养试验所用潮土和砂姜黑土基础养分、机械组成等特性比较

Table 1 Comparison of soil properties and their mechanical compositions between two soil types for the lab incubation experiment

全氮 TN (g·kg-1) 有机碳 SOC (g·kg-1) 全磷 TP (g·kg-1) pH 土壤机械组成Mechanical compositions 砂粒Sand (%) 粉粒Silt (%) 黏粒Clay (%) 砂姜黑土(ST) 28.0±0.2 82.0±0.9 45.0±0.8 6.8±0.2 39.1±4.6 21.4±1.2 39.6±5.1 潮土(FT) 32.0±0.7 73.0±0.4 39.0±0.2 7.8±0.01 5.7±0.4 56.4±3.9 37.9±3.8 t-test NS NS NS 4.8* -7.3** 7.2** NS