不同施氮量对冬小麦产量、效益及土壤理化性状的影响

黄寅玲,雷忠顺,郑涛,索新霞

Effects of Different Nitrogen Concentrations on Yield and Benefit of Winter Wheat and Soil Physical and Chemical Properties

Yinling Huang,Zhongshun Lei,Tao Zheng,Xinxia Suo

表5 不同施氮量处理对土壤理化性状的影响

Table 5 Effects of different nitrogen application treatments on soil physical and chemical properties

处理 Treatment pH 有机质(g/kg) Organic matter 全氮(g/kg) Total nitrogen 有效磷(mg/kg) Available phosphorus 速效钾(mg/kg) Available potassium 缓效钾(mg/kg) Slowly available potassium 土壤容重(g/cm3) Soil bulk density W1 8.0a 15.1b 1.01b 17.1a 142a 770a 1.55a W2 8.0a 15.5ab 1.04ab 16.5b 140ab 768ab 1.54ab W3 8.0a 15.9a 1.05ab 16.5b 138ab 765ab 1.52ab W4 8.0a 15.8a 1.06ab 16.5b 137ab 762b 1.50b W5 8.0a 15.7a 1.07a 16.4b 135b 762b 1.53ab W6 8.0a 15.6ab 1.08a 16.6b 137ab 763b 1.53ab