| 不同施氮水平对俯仰臂形草生产性能的影响 |
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| 引用本文： | 袁福锦,奎嘉祥,李淑安,谢有标,郭正云.不同施氮水平对俯仰臂形草生产性能的影响[J].草业科学,2005,22(2):48-51. |
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| 作者姓名： | 袁福锦 奎嘉祥 李淑安 谢有标 郭正云 |
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| 作者单位： | 1. 云南省肉牛和牧草研究中心,云南,昆明,650212
2. 云南思茅市农业局,云南,思茅,665000 |
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| 摘 要： | 试验表明,在施一定量磷、钾、硫、锌、锰、铜肥的基础上,俯仰臂形草Brachiaria decumbens的干物质产量和粗蛋白含量随施氮量的增加而上升;在施氮处理范围内,氮肥利用率随施氮量的增加而降低.施氮量0～172.5 kg/hm2,种子产量随施氮量的增加而增加;当施氮量达到103.5 kg/hm2时,种子产量最高;达到304 kg/hm2时,随施氮量增加,种子产量呈下降趋势.
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| 关 键 词： | 俯仰臂形草 氮水平 生产性能 |
| 文章编号： | 1001-0629(2005)02-0048-04 |
Study of nitrogen application on seed production of Brachiaria decumbens |
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| YUAN Fu-jin,KUI Jia-xiang,LI Shu-an,XIE You-biao,GUO Zheng-yun.Study of nitrogen application on seed production of Brachiaria decumbens[J].Pratacultural Science,2005,22(2):48-51. |
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| Authors: | YUAN Fu-jin KUI Jia-xiang LI Shu-an XIE You-biao GUO Zheng-yun |
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| Abstract: | It was showed in this trail that,based on certain quantities of P,K,S,Zn,Mn and Cu,the dry matter yield and crude protein content of Brachiaria decumbens gradually increased with increased nitrogen application between 0~172.5 kg/hm~2. The utilization rate of nitrogen decreased gradually at all nitrogen levels. When nitrogen application reached to 103.5 kg/hm~2, seed yield reached the highest value (304 kg/hm~2), If nitrogen application increase continued, seed yield decreased. |
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| Keywords: | Brachiaria decumbens nitrogen fertilizer levels seed yield |
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