| 氮锌硒肥配合施用对白三叶的固氮作用与氮转移的影响 |
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| 引用本文： | 华珞,韦东普,白玲玉,姚允寅. 氮锌硒肥配合施用对白三叶的固氮作用与氮转移的影响[J]. 生态学报, 2001, 21(4): 588-592 |
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| 作者姓名： | 华珞 韦东普 白玲玉 姚允寅 |
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| 作者单位： | 1. 首都师范大学地理系,
2. 中国农业科学院原子能利用研究所, |
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| 基金项目： | 国家自然科学基金项目（批准号：39870127） |
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| 摘 要： | 在湖北省宜昌县百里荒草场山地黄棕壤上配合施用氮锌硒肥，研究其对混播白三叶，混播黑麦草及单播黑麦草的干重及混播白三叶的固氮作用和氮转移的影响，试验结果表明：（1）氮锌硒肥配合施用，混播黑麦草的干重均高于相应处理的单播黑麦草，混播牧草和单播黑麦草重最高的处理都是N46Zn0Se5，其干重辚25．38 g／盆和19．93g/盆。（2）施氮对混播白三叶，混播黑麦草及单播黑麦草的生长有明显的促进作用，施锌，硒对混播白三叶，混播黑麦草及单播黑麦草的生长作用不明显。（3）混播白三叶氮素的主要来源是固氮作用，占全氮产量的57．6000％－77．258％。（4）混播白三叶固定氮的转移量只占混播黑麦草的全氮产量的0．316％－12．251％，通过正交方差分析发现，适量氮肥（N30mg/kg)促进固定氮的转移，高量氮肥（N46mg/kg)抑制固定氮的转移。
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| 关 键 词： | 氮肥 锌肥 硒肥 配合施肥 生物固氮 氮转移 白三叶 草地 |
| 文章编号： | 1000-0933(2001)04-0588-05 |
| 收稿时间： | 2000-10-24 |
| 修稿时间： | 2001-02-05 |
Effect of application of nitrogen, zinc and selenium on fixation of nitrogen and transfer of nitrogen fixed in white clover |
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| HUA Luo,WEI Dongpu,BAI Lingyu and YAO Yunyan. Effect of application of nitrogen, zinc and selenium on fixation of nitrogen and transfer of nitrogen fixed in white clover[J]. Acta Ecologica Sinica, 2001, 21(4): 588-592 |
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| Authors: | HUA Luo WEI Dongpu BAI Lingyu YAO Yunyan |
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| Affiliation: | Department of Geography; Capital Normal University; Beijing |
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| Abstract: | A pot experiment was carried out to study the effects of combined applications of nitrogen, zinc and selenium fertilizer on dry weight of herbage, nitrogen fixation and transfer of nitrogen from white clover to ryegrass in mixed culture in a mountain yellowbrown soil. The results showed as follows: (1) Dry weight of ryegrass in mixed culture was higher than that of ryegrass in mono culture; Dry weight of both herbage in mixed culture and ryegrass in mono culture in treatment of N46Zn0Se5 were the highest, w... |
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| Keywords: | Nitrogen fertilizer Zinc fertilizer Selenium fertilizer combined application fertilizer nitrogen fixation transfer of nitrogen fixed. |
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