施肥对高寒荒漠草原区混播人工草地产量和水分利用的影响

张学梅,马千虎,张子龙,王自奎,杨惠敏,沈禹颖

Effects of Fertilization Rate on Forage Yield and Water Use Efficiency of Artificial Grassland in an Alpine Arid Area

ZHANG XueMei,MA QianHu,ZHANG ZiLong,WANG ZiKui,YANG HuiMin,SHEN YuYing

表3 不同处理下耗水量和水分利用效率

Table 3 Water consumption and water use efficiency under different treatments

年份 Year 处理 Treatment 耗水量 Water consumption (mm) 干物质水分利用效率 Water use efficiency for dry matter (kg·m-3) 粗蛋白水分利用效率 Water use efficiency for crude protein (kg·m-3) 2017 单播高肥 Sole oat with high fertilization 254.1a 3.79a 0.212b 单播低肥 Sole oat with low fertilization 219.9b 3.24b 0.155c 混播高肥 Oat/Vetch with high fertilization 277.8a 3.69a 0.298a 混播低肥 Oat/Vetch with low fertilization 281.1a 2.94c 0.237b 2018 单播高肥 Sole oat with high fertilization 353.5ab 1.90a 0.090b 单播低肥 Sole oat with low fertilization 344.8b 1.84a 0.084b 混播高肥 Oat/Vetch with high fertilization 392.0a 1.94a 0.147a 混播低肥 Oat/Vetch with low fertilization 370.2ab 1.82a 0.117ab 方差分析 Analysis of variance P * * ** F ** ** ** P×F NS NS NS