| 氮肥用量和水分淋溶对土壤和小麦氮素平衡的影响 |
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| 引用本文： | 郭建华,Henry Janzen.氮肥用量和水分淋溶对土壤和小麦氮素平衡的影响[J].土壤通报,2000,31(6):259-261. |
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| 作者姓名： | 郭建华 Henry Janzen |
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| 作者单位： | 1. 河北省农业科学院土壤肥料研究所,河北石家庄,050051
2. Lethbridge Resarch Center,Agriculture and Agri-Food Canada |
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| 基金项目： | 中加合作项目资助(282/15883) |
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| 摘 要： | :利用标记15N尿素研究不同施肥量和淋溶对小麦生长的影响 ,结果表明水分淋溶对小麦生长的影响不明显 ;地上部生物产量与肥料利用率成正相关 .小麦根系越发达 ,收集到的淋溶液越少 ,损失的肥料N越少 .施用相同量的氮肥 ,淋溶处理的氮肥利用率略低于正常浇水的处理
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| 关 键 词： | 氮肥平衡 水分淋溶 养分循环 |
| 文章编号： | 0564-3945(2000)06-0259-03 |
| 修稿时间： | 1999年6月19日 |
Nitrogen balance in soil and wheat as affected by N fertilization and water leaching |
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| Henry Janzen.Nitrogen balance in soil and wheat as affected by N fertilization and water leaching[J].Chinese Journal of Soil Science,2000,31(6):259-261. |
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| Authors: | Henry Janzen |
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| Abstract: | The effect of urea dose and water leaching on the growth of wheat by using 15 N tracing method was investigated. We found that water had no significant effect on the growth of wheat, while the biomass of above ground was related positively to the amount of N fertilizer. The more developed the wheat roots were, the less leachate could be collected, thus, less loss of N fertilizer was observed. The efficiency of N fertilizer was higher in the treatment of traditionally irrigated soil than the leaching treatment, when the same amount of fertilizer was applied. |
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| Keywords: | Balance of N fertilizer water leaching Nutrient cycli? |
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