绿肥还田和减量施氮对甘肃河西灌区土壤质量及燕麦产量和品质的影响

周琦, 张靖, 王振龙, 施志国, 邓超超, 常浩, 柳洋, 周彦芳

Effects of Green Manure Incorporation and Nitrogen Fertilizer Reduction on Soil Quality, Oat Yield and Quality in Hexi Irrigation District of Gansu Province

Zhou Qi, Zhang Jing, Wang Zhenlong, Shi Zhiguo, Deng Chaochao, Chang Hao, Liu Yang, Zhou Yanfang

表2 不同处理对土壤养分指标的影响

Table 2 Effects of different treatments on soil nutrient indicators

土层深度 Soil layer (cm) 处理 Treatment 有机质 Organic matter (g/kg) 全氮 Total nitrogen (g/kg) 碱解氮 Available nitrogen (mg/kg) 速效钾 Available potassium (mg/kg) 有效磷 Available phosphorus (mg/kg) 容重 Bulk density (g/cm3) 0~20 CK 14.42±0.12c 0.98±0.01c 63.33±1.45d 127.00±2.31c 40.26±0.40e 1.25±0.01a GFN90 19.61±0.12a 1.14±0.02a 93.90±1.39a 153.00±1.15b 55.99±0.42a 1.16±0.01bc GFN80 19.56±0.12a 1.05±0.01b 81.07±1.16b 162.33±2.03a 51.54±0.41b 1.14±0.01cd GFN70 18.47±0.14b 0.95±0.01c 72.47±1.28c 154.33±1.45b 47.16±0.64c 1.17±0.01b GFN60 18.85±0.16b 0.84±0.02d 75.00±1.08c 152.67±0.88b 51.43±0.63b 1.12±0.01d GFN50 18.50±0.18b 0.75±0.01e 74.40±0.93c 155.33±0.88b 45.49±0.41d 1.15±0.01bc 20~40 CK 10.29±0.12d 0.52±0.01c 49.20±1.04c 104.00±1.53d 23.18±0.25c 1.33±0.02a GFN90 12.52±0.08b 0.69±0.02b 55.57±1.43b 121.00±1.53a 25.96±0.18a 1.31±0.01a GFN80 13.56±0.18a 0.76±0.02a 61.73±0.98a 110.33±1.45c 19.51±0.27d 1.30±0.01a GFN70 12.25±0.17b 0.68±0.02b 51.00±1.06c 122.67±1.45a 18.29±0.26e 1.30±0.02a GFN60 12.41±0.15b 0.79±0.02a 55.67±1.11b 115.33±1.20b 24.28±0.61b 1.31±0.01a GFN50 11.78±0.12c 0.67±0.02b 50.90±1.61c 116.33±1.45b 20.34±0.34d 1.31±0.01a 0~40（平均） 0-40 (average) CK 12.36±0.09e 0.75±0.01c 56.27±1.25e 115.50±1.89c 31.72±0.10e 1.29±0.01a GFN90 16.07±0.05b 0.91±0.02a 74.73±0.96a 137.00±0.50ab 40.98±0.21a 1.24±0.01b GFN80 16.56±0.15a 0.91±0.02a 71.40±1.07b 136.33±0.33ab 35.53±0.30c 1.22±0.01b GFN70 15.36±0.02cd 0.82±0.02b 61.73±0.32d 138.50±1.26a 32.72±0.28de 1.24±0.00b GFN60 15.63±0.02c 0.82±0.02b 65.33±1.09c 134.00±0.76b 37.86±0.62b 1.22±0.01b GFN50 15.15±0.12d 0.71±0.01c 62.65±0.38cd 135.83±0.60ab 32.92±0.33d 1.23±0.00b