| 不同土壤耕作法对作物产量及土壤硝态氮淋失的影响 |
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| 引用本文： | 胡立峰,胡春胜,安忠民,张爱军,陈阜.不同土壤耕作法对作物产量及土壤硝态氮淋失的影响[J].水土保持学报,2005,19(6):186-189. |
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| 作者姓名： | 胡立峰 胡春胜 安忠民 张爱军 陈阜 |
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| 作者单位： | 中国农业大学农学与生物技术学院 北京100094
(胡立峰)，中国科学院石家庄农业现代化研究所 河北石家庄050021
(胡春胜，安忠民)，河北农业大学山区研究所 河北保定071001
(张爱军)，中国农业大学农学与生物技术学院 北京100094(陈阜) |
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| 基金项目： | 国家重大科技专项“粮食主产区保护性耕作制与关键技术研究” |
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| 摘 要： | 针对华北平原小麦—玉米两熟区不同土壤耕法下玉米产量及玉米生育期土壤硝态氮迁移进行研究,结果表明,翻耕模式下玉米产量最高,免耕下最低。在0~180 cm土体中,收获期与苗期相比,翻耕硝态氮含量平均减少了66.6%;旋耕平均减少了21.7%;免耕则平均减少了20.9%。累积峰出现的深度与硝态氮淋失有直接关系。对比3种模式,翻耕累积峰最深,硝态氮淋失威胁最大;免耕无明显累积峰。在施肥、灌溉等影响硝态氮淋失的可控因子以外,从耕作模式上研究硝态氮淋失是今后研究的方向。
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| 关 键 词： | 华北平原 土壤耕作 硝态氮淋失 累积峰 |
| 文章编号： | 1009-2242（2005）06-0186-04 |
| 收稿时间： | 2005-06-17 |
| 修稿时间： | 2005-06-17 |
Effects of Different Tillage Patterns on Crop Yields and Nitrate Leaching in Soil |
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| HU Li-feng,CHEN Fu,Hu Chun-sheng,AU Zhong-min,ZHANG Ai-jun,CHEN Fu.Effects of Different Tillage Patterns on Crop Yields and Nitrate Leaching in Soil[J].Journal of Soil and Water Conservation,2005,19(6):186-189. |
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| Authors: | HU Li-feng CHEN Fu Hu Chun-sheng AU Zhong-min ZHANG Ai-jun CHEN Fu |
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| Institution: | 1. College of Agronomy and Biotechnology, China Agricultural University, Beijing 100094 ; 2. Shijiazhuang Institute of Agricultural Modernization, CAS , Shijiazhuang , Hebei 050021 ; 3. Mountainous Areas Research Institute, Agricultural University of Hebei , Baoding 071001 |
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| Abstract: | Based on different tillage patterns experiment,the maize yield and soil nitrate accumulation have been studied in areas of wheat and maize a year in north China plain.The results showed that the highest yield pattern is plough and the lowest yield pattern is no till.Compared with seedling time,the nitrate content of plough on harvest time was decreased 66.6% from 0 to 180 cm,the rotary tillage was decreased 21.7% and the no tillage was decreased 20.9%.The accumulation peak is related with nitrate leaching loss.There are different nitrate accumulation peak under different tillage pattern,the plough accumulation peak is downmost,whereas no tillage is no accumulation peak.The tillage pattern will be the important approach to the nitrate leaching loss. |
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| Keywords: | north China plain soil tillage nitrate leaching loss wheat-corn double cropping accumulation peak |
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