中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 膜孔灌灌施条件下硝态氮迁移分布规律研究 干旱地区农业研究 2008,26 (1) 237-240+245
Position: Home > Articles > Study on the rule of nitric nitrogen movement and distribution under film hole irrigation with fertilizer Agricultural Research in the Arid Areas 2008,26 (1) 237-240+245

膜孔灌灌施条件下硝态氮迁移分布规律研究

作  者：
程东娟;费良军;雷雁斌;尹娟
单  位：
陕西省水利厅项目办;西安理工大学水资源所
关键词：
膜孔灌;灌施;硝态氮;迁移;分布
摘  要：
利用自行研制的膜孔点源入渗装置,测试膜孔灌灌施条件下硝态氮的迁移和分布规律。结果表明:在肥液连续入渗过程中,硝态氮浓度锋运移与水分湿润锋是一致的;随着距离膜孔中心距离的增加,NO3-N含量减小,在湿润锋位置处土壤NO3-N含量急剧减小到本底值;进入再分布过程后,土壤水分运移速度减慢,整个湿润土体内的含水量分布更加均匀;再分布1~7天内,硝态氮含量略有下降,再分布10天后,硝态氮反硝化作用增强,径向处的反硝化作用弱于垂向处,硝态氮含量明显降低。
译  名：
Study on the rule of nitric nitrogen movement and distribution under film hole irrigation with fertilizer
作  者：
CHENG Dong-juan1,2,FEI Liang-jun1,LEI Yan-bin3, YIN Juan1 (1.Xi'an University of Technology,Xi'an,Shaanxi 710048,China; 2.Hebei Engineering University,Handan,Hebei 056021,China;3.Project Office of Shaanxi Provincial Department of Water Resources,Xi'an,Shaanxi 710048,China)
关键词：
film hole irrigation;irrigation with fertilizer;nitric nitrogen movement;nitric nitrogen distribution
摘  要：
Through experiment with self-made device for film hole infiltration,the rule of NO3-N movement and distribution under film hole irrigation with fertilizer is studied.The results show: the NO3-N concentration front movement consists with the water wet front movement in the course of water infiltration.The NO3-N content decreases with the increasing of distance from film hole center.The NO3-N content decreases abruptly to background value at the wet front; water moves slowly in the course of redistribution and water content distributes uniformly in the whole wet soil body.The NO3-N content decreases in the early 1～7 days of redistribution.Denitrification is more strongly in vertical indirection than in horizontal indirection and the NO3-N content decreases distinctly.The research results has laid a foundation for further study of film hole irrigation.

相似文章

导出引用
计量
文章访问数: 13
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46