| 引用本文: | 谢红梅,朱 波,朱钟麟. 无机与有机肥配施麦田(紫色土)铵态氮及硝态氮的时空变异[J]. 中国生态农业学报(中英文), 2006, 14(1): 118-121 |
| XIE Hong-Mei,ZHU Bo,ZHU Zhong-Lin. Temporal-spatial variations of ammonia and nitrate under application of inorganic and organic fertilizers in purple soil of winter wheat[J]. Chinese Journal of Eco-Agriculture, 2006, 14(1): 118-121 |
| DOI： | DOI:10.3724/SP.J.1011.year_id].0118 |
|
| 摘要: 试验研究无机与有机肥配施冬小麦紫色土NH+4-N及NO-3-N的时空变异特征结果表明，冬小麦不同生育期施肥后第15d和第120d紫色土NH+4-N含量有两个显著的降低、升高转折点，第15d与N素的硝化作用和挥发作用有关，第120d受此阶段冬小麦的强烈吸收和肥料的矿化释放作用影响较大；土壤NH+4-N和NO-3-N含量在不同剖面(0～15cm、15～30cm、30～50cm土层)的分配明显受施用有机肥的影响，有机肥对NO-3-N有一定固持作用，阻碍了NO-3-N向下迁移，各处理对NO-3-N迁移的固持作用表现为秸秆＋化肥＞猪粪＋化肥＞鸡粪＋化肥＞纯化肥处理；土壤NH+4-N与NO-3-N含量时空变异有较强的此消彼涨相关性，且施纯化肥处理最明显。 |
| 关键词: 紫色土 NH+4-N NO-3-N 时空变异 冬小麦 |
| 中图分类号: |
| 基金项目:中国科学院知识创新工程项目(KZCX2-413)、中国科学院野外台站基金项目和国家“丰粮”工程项目(2004BA520A05)、稻田保护性耕作课题及国家高技术(863)发展计划项目“现代节水”资助 |
|
| Temporal-spatial variations of ammonia and nitrate under application of inorganic and organic fertilizers in purple soil of winter wheat |
|
XIE Hong-Mei1, ZHU Bo1, ZHU Zhong-Lin2
|
|
1.Chengdu Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Resources, Chengdu 610041, China;2.Soil and Fertilizer Institute of Sichuan Academy of Agriculture, Chengdu 610066, China
|
| Abstract: The temporal-spatial variations of ammonia and nitrate were studied under application of inorganic and organic fertilizers in purple soil of winter wheat. The results show that there are two obvious reduction-and-increase turns for soil ammonia and nitrate during different growth periods of winter wheat, which are 15 days and 120 days after fertilizers application. The former (15
th day) is believed to be related to nitrification and volatilization. The latter (120th day) is affected by both the strong absorption of plant and mineralization release. The trends of ammonia and nitrate in purple soil at different soil profiles (0～15cm, 15～30cm, 30～50cm) are affected by organic manure, which means that the nitrate is retained to move slowly to some degree. The nitrate-retaining effect of each treatment behaves as straw＋fertilizer＞pig manure＋fertilizer＞chicken manure＋fertilizer＞pure fertilizer. There is significantly negative correlation between the quantity of ammonia and nitrate, and the pure fertilizer treatment is the most significant. |
| Keyword: Purple soil, NH+4-N,NO-3-N,Temporal-spatial variations, Winter wheat |
