Evaluation of irrigation water requirements and crop yields with different irrigation schedules for paddy fields in ChiaNan irrigated area, Taiwan
Tóm tắt
Recent water shortages in reservoirs have caused such problems as insufficient water and fallow rice fields in Southern Taiwan; therefore, comparing irrigation water requirements and crop production of paddy fields using a technique that differs from the conventional flood irrigation method is important. Field experiments for the second paddy field with four irrigation schedules and two repeated treatments were conducted at the HsuehChia Experiment Station, ChiaNan Irrigation Association, Taiwan. Experimental results demonstrate that irrigation water requirements for the comparison method, and 7-, 10- and 15-day irrigation schedules were 1248, 993, 848, and 718 mm, respectively. Compared to the conventional method of flooding fields at a 7-day interval, the 10- and 15-day irrigation schedules reduced water requirements by 14.6 and 27.3 %, respectively; however, crop yields decreased by 7 and 15 %, respectively. Based on the results, it was recommended that the ChaiNan Irrigation Association could adopt 10 days irrigation schedule and plant drought-enduring paddy to save irrigation water requirements for the water resource scarcity in southern Taiwan. The CROPWAT model was utilized to simulate the on-farm water balance with a 10-day irrigation schedule for the second paddy field. A comparison of net irrigation water requirements with the 10-day irrigation schedule from model and field experiment were 818 and 848 mm, respectively, and the error was 3.54 %.
Tài liệu tham khảo
Bouman BAM, Humphreys E, Barker R, Tuong TP (2006) Rice water. Adv Agron 92:187–237
Cheong BH (1992) Improving irrigation system performance for rice culture. Ph.D. Dissertation, Utah State University, Logan
Chung S-O (2009) Simulating yield response of rice to climate change. In: International conference on promising practices for the development of sustainable paddy fields, Bogor, 7–9 Oct 2009
Hill RW, Hanks RJ, Wright JL (1987) Crop yield models adapted to irrigation scheduling programs. Proceedings irrigation systems for the 21st century proceedings international conference on genetic algorithms, Portland
Keller AA (1987) The USU unit command area model. Water management synthesis II project, WMS Report No. 71, USAID. Logan, UT
Kuo S (1995) Decision support for irrigated project planning using a genetic algorithm. Ph.D. Dissertation, Utah State University, Logan
Pleban S, Israeli I (1989) Improved approach to irrigation scheduling. J Irrig Drain Eng, ASCE 115(4):577–587
Prajamwong S (1994) Command area decision support system for irrigation projects. Ph.D. Dissertation, Utah State University, Logan
Smith Martin (1999) CROPWAT: manual and guidelines. FAO of UN, Rome
Tejendra Chapagain1 and Eiji Yamaji (2009) Evaluation of the system of rice intensification (SRI) techniques under the temperate climatic condition in Japan. In: International conference on promising practices for the development of sustainable paddy fields. Bogor, Indonesia, 7–9 Oct 2009
Virgilio JP et al (2009) IT field monitoring in a Japanese system of rice intensification (J-SRI). In: International conference on promising practices for the development of sustainable paddy fields, Bogor, Indonesia, 7–9 Oct 2009
Yang CM (2007) Technique and strategy to paddy field water saving for climate change. In: Proceeding for influence of climate change to paddy production in Taiwan, ChungHsing University, Taichung, 26 Oct 2007