Abstract:

To test the adaptability of ORYZA2000 model for Single Cropping Rice in Guiyang Region and estimate potential yield. On the basis of meteorology data from 2008 to 2009 in Guiyang Region, the ORYZA2000 model was calibrated by field experiment data of ‘Jinyou527’, ‘QianNanyou2058’ and ‘Qyou 6’ in 2008-2009. Moreover, the crop parameters were obtained and evaluation of ORYZA2000 model for single cropping rice was conducted, and also the potential yield for single cropping rice in Guiyang Region were estimated in 1995-2009 by calibrating ORYZA2000 model. The results showed that: the average of NRMSE of the simulations of total biomass above ground, stem biomass, panicle biomass, green leaf biomass, leaf area index and yield for the three varieties was 16.4%, 22.5%, 23.5%, 26.5%, 26.1%, 11.3%, respectively. ORYZA2000 model was acceptable in simulations of biomass, leaf area index and yield, and the simulations of yield and total biomass were more accurate than that for other index.