| 应用无张力托盘研究施肥对黑土浅层土壤NO-3-N淋洗的影响 |
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| 引用本文： | 王继红,刘景双,于君宝,王金达.应用无张力托盘研究施肥对黑土浅层土壤NO-3-N淋洗的影响[J].水土保持学报,2004,18(2):25-27,44. |
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| 作者姓名： | 王继红 刘景双 于君宝 王金达 |
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| 作者单位： | 1. 中国科学院,东北地理与农业生态研究所,吉林,长春,130021;吉林农业大学,资源与环境学院,吉林,长春,130118
2. 中国科学院,东北地理与农业生态研究所,吉林,长春,130021 |
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| 基金项目： | 国家重大基础规划项目(1999011804-05),吉林省科技厅资助项目(20020666),教育部科技重点项目(02045)资助 |
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| 摘 要： | 利用D饱和最优设计研究了施肥对黑土玉米农田生态系统硝态氮淋洗的影响,结果表明,黑土玉米农田生态系统氮磷肥配合施用,土壤淋洗液的硝态氮含量及硝态氮淋洗总量主要决定于氮素的施用量。施用氮肥减少了淋洗液的数量,但增加了淋洗液硝态氮的浓度和硝态氮淋洗总量。氮肥增加淋洗液硝态氮总量的原因是增加了淋洗液硝态氮的含量。施用磷肥增加了淋洗液的数量,但减少了淋洗液硝态氮的含量和硝态氮淋洗总量,磷肥降低硝态氮淋洗总量的主要原因是降低了淋洗液硝态氮的浓度。氮磷配合施用减少淋洗液的硝态氮含量和硝态氮淋洗总量,所降低的硝态氮淋洗量是施氮后增加的那一部分。有机肥减少了淋洗液的数量,因此使硝态氮淋洗总量减少,但淋洗液的硝态氮浓度增施有机肥后反而增加。
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| 关 键 词： | 氮磷肥 黑土 浅层土壤 硝态氮 淋洗 |
| 文章编号： | 1009-2242(2004)02-0025-04 |
Study of NO-3-N Leaching After Fertilization in Shallow Layer of Dark Soil Using Tray Without Tension |
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| WANG Ji-hong.Study of NO-3-N Leaching After Fertilization in Shallow Layer of Dark Soil Using Tray Without Tension[J].Journal of Soil and Water Conservation,2004,18(2):25-27,44. |
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| Authors: | WANG Ji-hong~ |
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| Institution: | WANG Ji-hong~ |
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| Abstract: | This studied the effect of fertilization on NO~-_3-N leaching of field ecosystem of dark soil utilizing D-statured optimum design, it indicates that after fertilization NO~-_3-N concentration and NO~-_3-N quantity in the leaching liquid in corn field ecosystem dominated by the quantity of nitrogen fertilizer of application. The application of nitrogen fertilizer reduces the quantity of leaching liquid, but the concentration of NO~-_3-N and the total quantity of NO~-_3-N increase. The reason of increase of total quantity of NO~-_3-N is that the increase of total quantity of NO~-_3-N leaching liquid. The application of phosphate fertilizer increases the quantity of leaching liquid, but the concentration of NO~-_3-N and the total quantity of leaching liquid reduce. The reasons of reduce of total quantity of NO~-_3-N leaching liquid is that it reduces the content of NO~-_3-N in leaching liquid. The application of incorporated nitrogen and phosphate fertilizer reduces the content of NO~-_3-N and the total quantity of NO~-_3-N leaching liquid .The reduced quantity of leaching NO~-_3-N is just the increased section after applying nitrogen fertilizer. Organic fertilizer reduces the quantity of leaching liquid, so the total quantity of leaching liquid reduces, but the content of NO~-_3-N in the leaching liquid increases. |
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| Keywords: | nitrogen and phosphate fertilizer dark soil thin layer soil NO~-_3-N leaching |
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