| 不同节水灌溉方式下N肥在土壤中的空间变异研究 |
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| 引用本文： | 张建新,王爱云,吕昭智,王丽玲. 不同节水灌溉方式下N肥在土壤中的空间变异研究[J]. 农业环境科学学报, 2006, 0(Z2) |
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| 作者姓名： | 张建新 王爱云 吕昭智 王丽玲 |
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| 作者单位： | 新疆农垦科学院水土所 新疆石河子832000(张建新)，新疆农垦科学院新技术中心 新疆石河子832000(王爱云)，中国科学院新疆生态与地理研究所 新疆乌鲁木齐830011(吕昭智)，新疆库车县种子管理站 新疆库车842000(王丽玲) |
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| 基金项目： | 中国科学院知识创新重大项目(KZCX1-08-01) |
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| 摘 要： | 为深入研究N肥运移规律并为制定不同节水灌溉方式的施肥制度提供理论依据,采用Surfer软件对节水灌溉条件下N素在土壤中的分布动态进行了分析研究。结果表明,膜下滴灌条件下N素的运移深度为40cm,侧渗为20cm;膜下软管灌施条件下N素运移深度为60 cm以下,侧渗范围为50cm。从养分浓度方面看,膜下滴灌N素浓度最高,其次为膜下软管灌施,它们的模型为二次方程。
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| 关 键 词： | 膜下滴灌 膜下软管灌 N肥 浓度 模型 |
Spatial Variability of N Fertilizer in Soil Under Different Water-Saving Irrigation Modes |
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| ZHANG Jian-xin,WANG Ai-yun,LV Zhao-zhi,WANG Li-ling. Spatial Variability of N Fertilizer in Soil Under Different Water-Saving Irrigation Modes[J]. Journal of Agro-Environment Science( J. Agro-Environ. Sci.), 2006, 0(Z2) |
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| Authors: | ZHANG Jian-xin WANG Ai-yun LV Zhao-zhi WANG Li-ling |
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| Affiliation: | ZHANG Jian-xin1,WANG Ai-yun2,LV Zhao-zhi3,WANG Li-ling4 |
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| Abstract: | Through analysis and research by utilizing software Surfer,it is concluded that translocation of N fertilizer in soil under different water-saving irrigation modes is characterized by that: in case of under-film trickle irrigation,translocation depth of nitrogen is 40 cm,while the lateral seepage is 20 cm.In case of under-film hose irrigation,the depth is less than 60 cm,while the lateral seepage is 50 cm.Additionally,in terms of nutrient concentration,nitrogen content with under-film trickle irrigation is the highest,that with under-film hose irrigation is the next.It has been discovered that their models are quadratic equations,making it possible to be as reference for further research on regulation of translocation of N fertilizer in the future,and may also offer a theoretical basis in formulation of fertilizer-applying system with different water-saving irrigation modes. |
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| Keywords: | under-film trickle irrigation under-film hose irrigation N fertilizer concentration model |
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