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
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张学梅,马千虎,张子龙,王自奎,杨惠敏,沈禹颖
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Effects of Fertilization Rate on Forage Yield and Water Use Efficiency of Artificial Grassland in an Alpine Arid Area
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ZHANG XueMei,MA QianHu,ZHANG ZiLong,WANG ZiKui,YANG HuiMin,SHEN YuYing
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表1 播种前试验地土壤基本理化性状
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Table 1 Main soil physical and chemical properties of experimental field before sowing
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土层
Layer
(cm) | 有机质
Soil organic matter
(g·kg-1) | 全氮
Total nitrogen
(g·kg-1) | 硝态氮
Nitrate nitrogen (mg·kg-1) | 速效磷
Available phosphorus (mg·kg-1) | 容重
Bulk density
(g·cm-3) | 田间持水量
Field capacity (cm3·cm-3) | | 0-10 | 19.92 | 0.75 | 25.82 | 6.11 | 1.44 | 0.278 | | 10-20 | 20.90 | 1.02 | 14.68 | 5.43 | 1.48 | 0.292 | | 20-30 | 24.74 | 0.75 | 9.09 | 5.56 | 1.63 | 0.269 | | 30-40 | 15.30 | 0.49 | 4.83 | 2.93 | 1.60 | 0.273 | | 40-60 | 10.60 | 0.21 | 2.76 | 2.18 | 1.46 | 0.270 | | 60-100 | 6.73 | 0.15 | 2.53 | 2.12 | 1.55 | 0.263 |
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