Your search found 9 records
1 Li, Y. H.; Cui, Y. L. 1996. Real-time forecasting of irrigation water requirements of paddy fields. Agricultural Water Management, 31(3):185-193.
Irrigation requirements ; Water requirements ; Irrigation water ; Forecasting ; Rice ; Paddy fields ; Irrigation scheduling ; Evapotranspiration ; Computer models ; Mathematical models
(Location: IWMI-HQ Call no: PER Record No: H019336)
This paper presents the principle and methods of computerizing irrigation scheduling of paddy fields under intermittent submerged conditions. Models for forecasting daily evapotranspiration of rice are discussed. Under intermittent submerged conditions, there is no ponded water layer for most days after the rice turns green, so slight water stress occurs occasionally. The physiological mechanism and ecological characteristics of rice under limited water supply are quite different from those under submerged conditions; therefore, in estimating the evapotranspiration of rice, both lag and overshoot are considered in the model. Another feature of the model concerns the accounting for the contribution from the slow drainage of mobile water after the disappearance of the water layer in the paddy field. The model is compiled in Lotus 123 worksheets and is available as a menu-driven package.
2 Hong, L.; Li, Y. H.; Deng, L.; Chen, C. D.; Dawe, D.; Loeve, R.; Barker, R. 2000. Impact of water-saving irrigation techniques in China: analysis of changes in water allocations and crop production in the Zhanghe Irrigation System and district, 1996 to 1998. In International Water Management Institute (IWMI). Annual report 1999-2000. Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.27-35.
Irrigation programs ; Crop production ; Water allocation ; Water conservation ; Reservoirs ; Rice ; Crop yield / China / Zhanghe
(Location: IWMI HQ Call no: IIMI 631.7.3 G000 IIM Record No: H026792)
(0.38 MB)
3 Hong, L.; Li, Y. H.; Deng, L.; Chen, C. D.; Dawe, D.; Barker, R. 2001. Analysis of changes in water allocations and crop production in the Zhanghe Irrigation System and District - 1966-1998. Barker, R.; Loeve, R.; Li, Y. H.; Tuong, T. P. (Eds.). Water-saving irrigation for rice: proceedings of an international workshop held in Wuhan, China, 23-25 March 2001. Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.11-23.
Water allocation ; Crop production ; Rice ; Irrigated farming ; Reservoirs ; Water use ; Water conservation / China / Yangtze River / Zhanghe
(Location: IWMI-HQ Call no: IWMI 631.7.2 G592 BAR Record No: H027861)
4 Dong, B.; Loeve, R.; Li, Y. H.; Chen, C. D.; Deng, L.; Molden, D. 2001. Water productivity in Zhanghe Irrigation System: issues of scale. Barker, R.; Loeve, R.; Li, Y. H.; Tuong, T. P. (Eds.). Water-saving irrigation for rice: proceedings of an international workshop held in Wuhan, China, 23-25 March 2001. Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.97-115.
Irrigation systems ; Water productivity ; Reservoirs ; Water use ; Water stress ; Water conservation ; Rice ; Paddy fields ; Crop yield / China / Hubei Province / Zhanghe
(Location: IWMI-HQ Call no: IWMI 631.7.2 G592 BAR Record No: H027865)
5 Li, Y. H.. 2001. Research and practice of water saving irrigation for rice in China. Barker, R.; Loeve, R.; Li, Y. H.; Tuong, T. P. (Eds.). Water-saving irrigation for rice: proceedings of an international workshop held in Wuhan, China, 23-25 March 2001. Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.1-9.
Crop-based irrigation ; Rice ; Paddy fields ; Fertilizers ; Nitrogen ; Drought ; Water stress ; Water conservation ; Irrigation practices ; Productivity ; Crop yield ; History ; Water policy ; Water rates / China
(Location: IWMI-HQ Call no: IWMI 631.7.2 G592 BAR Record No: H027868)
(0.78 MB)
6 Barker, R.; Loeve, R.; Li, Y. H.; Tuong, T. P. (Eds.) 2001. Water-saving irrigation for rice: proceedings of an international workshop held in Wuhan, China, 23-25 March 2001. Colombo, Sri Lanka: International Water Management Institute (IWMI). xvii, 123p.
Water management ; Irrigation systems ; Irrigated farming ; Rice ; Productivity ; Water allocation ; Water scarcity ; Irrigation effects ; Crop production ; Water use efficiency ; Reservoirs ; Decision making ; Irrigation canals ; Crop yield ; Nitrogen ; Drainage ; Seepage ; Percolation ; Water accounting / China / Zhanghe
(Location: IWMI-HQ Call no: IWMI 631.7.2 G592 BAR Record No: H029238)
(0.54 MB)
7 Loeve, R.; Dong, B.; Molden, David; Li, Y. H.; Chen, C. D.; Wang, J. Z. 2004. Issues of scale in water productivity in the Zhanghe Irrigatin system: implications for irrigation in the basin context. Paddy and Water Environment, 2:227-236.
Rice ; Paddy fields ; Water conservation ; Irrigation systems ; Productivity ; Land use ; Evapotranspiration ; Measurement ; Rain ; Water storage / China / Hubei / Zhanghe Irrigation System
(Location: IWMI-HQ Call no: IWMI 631.7.2 G592 LOE Record No: H035937)
8 Dong, B.; Molden, David; Loeve, R.; Li, Y. H.; Chen, C. D.; Wang, J. Z. 2004. Farm level practices and water productivity in Zhanghe Irrigation System. Paddy and Water Environment, 2:217-226.
Rice ; Paddy fields ; Crop-based irrigation ; Productivity ; Irrigation practices ; Water conservation / China / Hubei / Zhanghe Irrigation System
(Location: IWMI-HQ Call no: IWMI 631.7.2 G592 DON Record No: H035936)
9 Li, Y. H.; Dong, B. 1998. Real-time irrigation scheduling model for cotton. In Pereira, L. S.; Gowing, J. W. (Eds.). Water and the environment: Innovation issues in irrigation and drainage: Selected papers of the 1st Inter-Regional Conference “Environment-Water: Innovative Issues in Irrigation and Drainage,” Lisbon, Portugal, Sept. 1998. London, UK: E & FN Spon. pp.197-204.
(Location: IWMI-HQ Call no: 631.7.1 G000 PER Record No: H039032)
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