Differences in rice water consumption and yield under four irrigation schedules in central Jilin Province,China |
| |
| Authors: | Wenxi Lu Weiguo Cheng Zheng Zhang Xin Xin Xihua Wang |
| |
| Institution: | 1.Key Lab of Groundwater Resources and Environment Ministry of Education,Jilin University,Changchun,People’s Republic of China;2.Institute of Water Environmental Sciences of Songliao,Changchun,People’s Republic of China |
| |
| Abstract: | The center of Jilin Province is one of the major rice-producing areas of Northeast China; however, rice production consumes large amounts of water, which is incompatible with the increasingly limited water supply. Rice yield and water consumption are the two most important considerations in the rice production process, and they may vary under different irrigation schedules. In this study, conducted in 2011 and 2012, differences in water consumption and rice yield were observed and analyzed under four different irrigation schedules—flooding irrigation (FI), shallow-wet irrigation (SWI), intermittent irrigation (II), and controlled irrigation (CI)—in a typical rice-growing area of central Jilin. The results showed that, under the four irrigation schedules, water consumption rates were (from highest to lowest) FI (1137.9 mm), SWI (984.0 mm), II (804.3 mm), and CI (678.5 mm), and rice yield rates were (from highest to lowest) SWI (9777.5 kg/ha), FI (9006.1 kg/ha), II (8936.3 kg/ha), and CI (8843.7 kg/ha), respectively. This indicated that, in central Jilin Province, the application of an advanced irrigation schedule not only saved a large amount of water for irrigation, but also that rice yields were not greatly reduced, and even increased in SWI. Therefore, we hope that in this and other similar rice cultivation areas, a universal high-yield and water-saving irrigation schedule can effectively reduce the problem of agricultural water use. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
