| 施氮水平对青海中华羊茅产量和营养成分含量的影响 |
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| 引用本文： | 狄平武,孙明德,石玉龙,窦声云,莫玉花.施氮水平对青海中华羊茅产量和营养成分含量的影响[J].青海草业,2009,18(2):2-5. |
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| 作者姓名： | 狄平武 孙明德 石玉龙 窦声云 莫玉花 |
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| 作者单位： | 青海省铁卜加草原改良试验站,青海,共和,813000 |
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| 摘 要： | 在高寒地区旱作条件下种植青海中华羊茅最适施氮量为N60kg/hm^2,施肥后三年内产草量比对照提高23.62%,其增产值是施肥成本的2.37倍,产籽量提高12.38%,其增产值是施肥成本的4.97倍。青海中华羊茅的产量随着施氮量的增加而增加,施氮后第二年的增产量高于施肥当年的增产量。粗蛋白质含量随着施氮量的增加而增加,但其增加速度随着施氮量的增加而减少,无氮浸出物的含量则随着施氮量的增加而急剧减少,而减少的速度随着施氮量的增加而减小。
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| 关 键 词： | 施氮水平 青海中华羊茅 产量 营养成分 |
NITROGEN LEVELS EFFECT ON THE PRODUCTION AND NUTRIENT COMPONENT OF FESTUCA SINENSIS KENGT |
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| DIPing-wu et al.NITROGEN LEVELS EFFECT ON THE PRODUCTION AND NUTRIENT COMPONENT OF FESTUCA SINENSIS KENGT[J].Qinghai Prataculture,2009,18(2):2-5. |
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| Authors: | DIPing-wu |
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| Affiliation: | The Improved and Experiment of Grassland Station in Tiebujia of Qinghai Province;Qinghi Gonghe 813000;China |
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| Abstract: | The Chinese planted fescue is the most suitable nitrogen plantedFestuca Sinensis Kengin the alpine dry conditions region of Qinghai is N60kg/hm2 In three years after fertilization,yield was increased by 23.62%,the increasing cost of production is 2.73 times the fertilizer,seed yield increased by 12.38%,and its application by the cost of production is 4.97 times.With the crude protein content of nitrogen application rate increased,but the rate of increase with the increase in nitrogen application rate is red... |
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| Keywords: | Nitrogen level Festuca Sinensis Keng Yield Nutrient component |
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