| 京郊保护地秋季番茄的氮素供应及利用 |
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| 引用本文： | 白优爱,贺建德,陈清,李晓林.京郊保护地秋季番茄的氮素供应及利用[J].中国蔬菜,2004,1(2):7-9. |
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| 作者姓名： | 白优爱 贺建德 陈清 李晓林 |
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| 作者单位： | 农业部植物营养学重点实验室; 北京市农业局土壤肥料工作站; 教育部植物-土壤相互作用重点实验室; 中国农业大学资源与环境学院植物营养系; |
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| 摘 要： | 研究了氮素供应水平对保护地番茄产量、养分吸收和氮素利用的影响。结果表明,氮素供应量(N)为225kg·hm~(-2)时番茄的产量最高,但随着施氮量的增加,番茄产量反而有所下降。增施氮肥对番茄地上部N、P、K的吸收没有明显的影响。在京郊传统生产条件下,保护地番茄生产相对合适的氮素供应水平(播前根层起始土壤无机氮含量+化学氮素用量)为510 kg·hm~(-2),但如果考虑番茄生长期间土壤氮素的矿化作用,番茄生产的氮素供应水平应为584kg·hm~(-2)。
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| 关 键 词： | 保护地 番茄 氮素供应 氮素利用 |
| 收稿时间： | 2003-04-26; |
| 修稿时间： | 2003年4月26日 |
Effects of Nitrogen Supply Levels on Greenhouse Tomato Growth and Nitrogen Utilization in Beijing Region |
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| Bai You'ai,He Jiande,Chen Qing,et al..Effects of Nitrogen Supply Levels on Greenhouse Tomato Growth and Nitrogen Utilization in Beijing Region[J].China Vegetables,2004,1(2):7-9. |
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| Authors: | Bai You'ai He Jiande Chen Qing |
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| Institution: | 1.Key Laboratory of Plant Nutrition; MOA; Key Laboratory of Plant-Soil Interactions; MOE; Department of Plant Nutrition; China Agricultural University; Beijing 100094;2.Beijing Agricultural Bureau |
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| Abstract: | The effect of different nitrogen supply levels on tomato growth and nitrogen utilization were studied in the greenhouse of Beijing region in spring. The results showed that the marketable yield was highest when nitrogen applied rate was 225 kg·hm~(-2). However, the tomato yield decreased with applied N rate increasing. There was no significant effects on N、P、K uptake between applied nitrogen rates. In this experiment the optimum N supply level for greenhouse tomato in protected field(Extension Service Cente... |
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| Keywords: | Greenhouse Tomato Nitrogen supply Nitrogen utilization |
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