氮素有机肥替代对高粱产量和土壤性质的影响

王海燕, 毕如田, 聂萌恩, 霍晓兰, 于志勇, 刘平

Response of Sorghum Yield and Soil Properties to Organic Nitrogen Substitution of Chemical Fertilizer

Wang Haiyan, Bi Rutian, Nie Mengʼen, Huo Xiaolan, Yu Zhiyong, Liu Ping

表2 不同施肥处理对土壤理化因子的影响

Table 2 Effects of different fertilization treatments on soil physiochemical properties

处理 Treatment 有机质 Organic matter (g/kg) 全氮 Total nitrogen (g/kg) 碱解氮 Alkaline hydrolyzed nitrogen (mg/kg) 有效磷 Available phosphorus (mg/kg) 速效钾 Available potassium (mg/kg) 土壤容重 Soil bulk density (g/cm3) 土壤孔隙度 Soil porosity (%) CK 10.32±0.39c 0.82±0.05b 47.46±1.01c 31.09±2.01c 222.7±7.01c 1.28±0.02a 51.60±2.13b HF 10.55±0.51c 0.96±0.04a 59.60±1.21a 41.29±1.78a 273.4±3.75a 1.28±0.03a 51.74±3.02b NF25 10.75±0.28c 0.95±0.02a 55.38±2.02b 40.30±1.33a 248.2±7.87b 1.27±0.01ab 52.23±1.34ab NF50 11.32±0.67b 0.95±0.03a 56.58±3.01ab 38.98±1.72ab 241.7±2.56b 1.26±0.03ab 52.59±1.11ab NF75 11.83±0.47ab 0.94±0.02a 55.12±2.79b 36.75±1.69b 241.1±2.31b 1.23±0.02b 53.53±3.47a NF100 11.99±0.72a 0.93±0.03a 53.61±1.12b 35.64±2.07b 237.4±1.91b 1.23±0.01b 53.61±2.91a