Wetting patterns and nitrogen distributions as affected by fertigation strategies from a surface point source

文献类型： 外文期刊

第一作者： Li, JS

作者： Li, JS;Zhang, JJ;Rao, MJ

作者机构：

关键词： drip irrigation;fertigation;fertigation strategies;soil water;nitrogen

期刊名称：AGRICULTURAL WATER MANAGEMENT （ 影响因子：4.516； 五年影响因子：5.12 ）

ISSN： 0378-3774

年卷期： 2004 年 67 卷 2 期

页码：

收录情况： SCI

摘要： Water and solute dynamics in the soil are important for the design, operation, and management of fertigation system by drip irrigation. Experiments were conducted to study the effects of fertigation strategies on wetting patterns and nitrogen distribution in the soil from a surface point source of nitrate ammonium (NH4NO3). A 15degrees wedge-shaped plexiglass container was used to represent one twenty-fourth of the complete cylinder. Monitoring of the wetting front movement in two soil textures, a sand and a loam, revealed that the increase in the surface wetted radius and in the vertical plane with water volume applied can be represented by a power function with power values of about 0.3 and 0.45, respectively. Similar values have been reported for a clay soil which suggests that these relations can be applied to a wide range of soil textures, from sand to clay. Analyses on the effects of application rate on the water distribution pattern demonstrated that increasing the water application rate allows more water to distribute in horizontal direction, while decreasing the rate allows more water to distribute in vertical direction for a given volume applied. The distributions of ammonium and nitrate concentrations in the soil were measured under different fertigation strategies that varied the order in which water and nutrient were applied. An extremely high ammonium concentration existed in the proximity of the point source because ammonium is absorbed by soil. Consequently fertigation strategy had an insignificant influence on the peak value. Accumulation of nitrate toward the boundary of the wetted volume was observed for each fertigation strategy, which suggests that flushing of the remaining fertilizer solution in the drip pipeline system should be as short as possible after fertilizer application is finished to avoid the potential loss of nitrate from the root zone. The strategy of first applying water for one-fourth of the total irrigation time, then applying fertilizer solution for one-half of the total irrigation time, followed by applying water for the remaining one-fourth of the total irrigation time left the most nitrate close to the source and was therefore recommended. (C) 2004 Elsevier B.V. All rights reserved.

分类号：

  • 相关文献

[1]Simulation of water and nitrogen dynamics as affected by drip fertigation strategies. Zhang Jian-jun,Zhao Bing-qiang,Li Yan-ting,Li Jiu-sheng. 2015

[2]Modeling of waterflow and nitrate transport under surface drip fertigation. Li, J,Zhang, J,Rao, M. 2005

[3]Spatial and temporal distributions of nitrogen and crop yield as affected by nonuniformity of sprinkler fertigation. Li, JS,Li, B,Rao, MJ. 2005

[4]Earthworms enhanced winter oilseed rape (Brassica napus L.) growth and nitrogen uptake. Zhang, Shujie,Chao, Ying,Zhang, Chunlei,Cheng, Jing,Li, Jun,Ma, Ni.

[5]Leaching and Transformation of Nitrogen Fertilizers in Soil After Application of N with Irrigation: A Soil Column Method. Zhou, JB,Xi, JG,Chen, ZJ,Li, SX.

[6]Overview of Water and Fertilizer Integration Development. Zheng, Huaiguo,Chuan, Limin,Zhao, Jingjuan,Sun, Sufen,Zhang, Junfeng. 2016

[7]The Key Technology Research on Automatic Monitoring and Remote Controlling of Water and Fertilizer on Banana. Wang, Lingling,Luo, Hongxia,Fang, Jihua,Wang, Lingling,Luo, Hongxia,Fang, Jihua. 2015

[8]Field evaluation of crop yield as affected by nonuniformity of sprinkler-applied water and fertilizers. Li, JS,Rao, MJ. 2003

[9]Soil nitrogen mineralisation dynamics under long-term different irrigation methods in greenhouses. Ji, Jinghong,Zhang, Yulong,Zhang, Yuling,Yu, Na,Zou, Hongtao,Ji, Jinghong,Li, Yuying,Liu, Shuangquan,Tong, Yuxin.

[10]EFFECTS OF WATER STORAGE IN DEEPER SOIL LAYERS ON GROWTH, YIELD, AND WATER PRODUCTIVITY OF COTTON (GOSSYPIUM HIRSUTUM L.) IN ARID AREAS OF NORTHWESTERN CHINA. Luo, Honghai,Zhang, Hongzhi,Hu, Yuanyuan,Zhang, Yali,Zhang, Wangfeng,Han, Huanyong. 2014

[11]Study on the rational sampling numbers of soil moisture monitoring for cotton. Li, Yan,Lei, XiaoYun,Zheng, GuoYu. 2012

[12]Deficit irrigation based on drought tolerance and root signalling in potatoes and tomatoes. Jensen, Christian R.,Liu, Fulai,Jacobsen, Sven-Erik,Plauborg, Finn,Andersen, Mathias N.,Psarras, Georgios,Chartzoulakis, Kostas,Janowiak, Franciszek,Stikic, Radmila,Jovanovic, Zorica,Li, Guitong,Qi, Xuebin. 2010

[13]Effect of new irrigation technology on the physiology and water use efficiency of potato by Reclaimed Water Irrigation. Qi, Xuebin,Huang, Zongdong,Qiao, Dongmei,Li, Ping,Zhao, Zhijuan,Fan, Tao,Wu, Haiqing,Fan, Xiangyang,Hu, Chao,Zhu, Donghai,Wang, Xin. 2013

[14]Research and Application on the Movable Subsurface Drip Irrigation System. Feng Junjie,Huang Xiuqiao,Zhai Guoliang,Deng Zhong,Di Guanghui,Liu Yang. 2012

[15]Drip Irrigation Scheduling for Tomato Grown in Solar Greenhouse Based on Pan Evaporation in North China Plain. Liu Hao,Duan Ai-wang,Sun Jing-sheng,Wang Yan-cong,Sun Chi-tao,Li Fu-sheng. 2013

[16]Effects of Different Topdressing Conditions on Photosynthetic Characteristics and Yield for Peanuts under Mulched Drip Irrigation. Wang, Huixin,Liu, Yifei,Han, Xiaori,Song, Qiaobo,Shi, Qingwen,Wang, Huixin,Guan, Bing. 2015

[17]The Production System Construction of Pollution-free Vegetables. Liu, Ziji,Yang, Yan,Cao, Zhenmu. 2013

[18]Effects of water stress on growth and mineral composition of 'Gala' apple fruit. Yao, SG,Neilsen, GH,Neilsen, D.

[19]Effects of Amendments and Water Conditions on the Chemical Speciation of Cd and Pb in Contaminated Paddy Soil in a Mining Area. Zhang, Chaolan,Yang, Weiwei,Li, Fangyuan,Lu, Meixian,Pan, Liping,Li, Chuanzhang,Xu, Guiping.

[20]Buried straw layer plus plastic mulching reduces soil salinity and increases sunflower yield in saline soils. Zhao, Yonggan,Li, Yuyi,Wang, Jing,Pang, Huancheng,Zhao, Yonggan,Li, Yan.

作者其他论文 更多>>

微信小程序