干旱区生态环境知识资源中心(Arid): Suitable inflow rate and furrow length for simplified surge flow irrigation

Arid

DOI	10.1007/s10333-019-00710-9
	Suitable inflow rate and furrow length for simplified surge flow irrigation
	Onishi, Junya 1; Ikeura, Hiroshi 1; Paluashova, Gaukhar K.2; Shirokova, Yulia I.2; Kitamura, Yoshinobu 3; Fujimaki, Haruyuki 4
通讯作者	Onishi, Junya
会议名称	Joint International Nara Conference of the International-Society-of-Paddy-and-Water-Environment-Engineering (PAWEES) and the International-Network-for-Water-and-Ecosystem-in-Paddy-Fields (INWEPF) (Nara Conference)
会议日期	NOV 20-22, 2018
会议地点	Nara, JAPAN
英文摘要	In the arid lands covering Uzbekistan, furrow irrigation with low application efficiency is still widely used due to a lack of funds and shortage of labor. To save water and prevent secondary salinization caused by excessive irrigation, it is important to adopt low-cost and easy water-saving irrigation methods. Onishi et al. (2017) proposed simplified surge flow (SF) irrigation that does not require expensive equipment and merely divides the water supply into two phases at 1-day intervals. This study investigated the suitable inflow rate and furrow length of simplified SF to improve water application efficiency in Uzbekistan. Five experimental plots (total area of 2,250m(2), with 25 furrows) were set up, and the inflow rates for two plots were 5 Ls(-1) (F5.0) and that for the others were 1.7 Ls(-1) (F1.7). The conventional irrigation method (F5.0C and F1.7C) and simplified SF (F5.0S and F1.7S) were applied to cases of furrow length of 100m under each inflow rate. In addition, simplified SF was applied on a 50-m furrow at F1.7 (F1.7S-50). In the first irrigation using simplified SF, water was supplied from the start point of the furrow (0m) for half of the furrow length (50m, 25m). In the second irrigation, water was supplied from the start point to the end of the furrow (100m, 50m). The application efficiency in F1.7S and F1.7S-50 was higher than that in F1.7C and F1.7C-50, and the highest was in F1.7S-50. The water supply duration was shorter in F5.0S, but the total volume of supplied water was larger than that of F1.7C. These results indicate that shortening furrow length might be an effective way to save water using simplified SF with a low inflow rate, and in contrast, that it is necessary to extend furrow length with a high inflow rate.
英文关键词	Arid land Salinization Water saving Furrow irrigation Surge flow irrigation
来源出版物	PADDY AND WATER ENVIRONMENT
ISSN	1611-2490
EISSN	1611-2504
出版年	2019
卷号	17
期号	2
页码	185-193
出版者	SPRINGER HEIDELBERG
类型	Article; Proceedings Paper
语种	英语
国家	Japan;Uzbekistan
收录类别	CPCI-S
WOS记录号	WOS:000468986100015
WOS关键词	SALINITY
WOS类目	Agricultural Engineering ; Agronomy
WOS研究方向	Agriculture
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/308286
作者单位	1.Japan Int Res Ctr Agr Sci, Rural Dev Div, 1-1 Owashi, Tsukuba, Ibaraki 3058686, Japan; 2.Res Inst Irrigat & Water Problem Uzbekistan, Bldg 11,Qarasu 4, Tashkent, Uzbekistan; 3.Tottori Univ, IPDRE, 1390 Hamasaka, Tottori, Tottori 6800001, Japan; 4.Tottori Univ, Arid Land Res Ctr, 1390 Hamasaka, Tottori, Tottori 6800001, Japan
推荐引用方式 GB/T 7714	Onishi, Junya,Ikeura, Hiroshi,Paluashova, Gaukhar K.,et al. Suitable inflow rate and furrow length for simplified surge flow irrigation[C]:SPRINGER HEIDELBERG,2019:185-193.