Chinese Journal of Agrometeorology ›› 2018, Vol. 39 ›› Issue (06): 411-420.doi: 10.3969/j.issn.1000-6362.2018.06.006

Previous Articles     Next Articles

Irrigation Simulation of Spring Maize in Central and Western of Jilin Province Based on WOFOST Model

ZHANG Yang, WANG Lian-xi, LI Qi, HU Zheng-hua,GUO Chun-ming,REN Jing-quan   

  1. 1.Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing 210044, China; 2.Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing 210044; 3.Institute of Meteorological Science of Jilin Province, Changchun 130062
  • Online:2018-06-20 Published:2018-06-14

Abstract: Based on meteorological data from 1961 to 2015 of midwestern stations in Jilin Province, the Peman-Monteith formula was utilized to calculate the evapotranspiration of spring maize’s growing season in the main growing areas and confirm the effective precipitation in the growing periods. The net irrigation amount of maize and the irrigation requirement index determined the critical irrigation periods; then the WOFOST crop model was used to simulate the yield of irrigation schemes for different precipitation years of the site, and the critical irrigation periods which were verified through the simulation yielded results to get a better irrigation plan. The results showed that the effective precipitation in the midwest of Jilin Province accounted for about 69% of the water demand, and the irrigation requirement index was higher in the sowing?seedling stage, seedling?jointing stage and milk?maturing stage. The three growth periods were the critical periods of spring maize to irrigate. When the spring maize was irrigated, the most efficient irrigation stage was the milking?maturing stage, followed by the sowing?emergence stage, multiply the irrigation time during the critical growth periods.

Key words: WOFOST, Critical growth period, Irrigation, Water-limited yield, Yield difference, Spring maize