基于GIS的重庆市冬小麦生育进程精细化空间分布

Studies on Fine Spatial Distribution of Growth and Development Process of Winter Wheat Based on GIS in Chongqing

根据四川盆地不同播期冬小麦生产的实测资料,建立了四川盆地小麦主要生育期的空间分布量化表达式,通过对个别地区进行适当订正后,在1:25万重庆市DEM图上分别制作了重庆市精细化的小麦适宜播种期、抽穗期、成熟期和生育期天数空间分布图,为地形复杂的重庆地区应用基于GIS的精细化小麦生育进程空间分布提供依据。

By using the observation data of winter wheat yields of different sowing dates in the Sichuan Basin, the numeric expressions of spatial distribution of main growing periods of winter wheat were established. Based on the GIS technology and the 1 ： 250000 DEM, the fine spatial distribution maps for suitable sowing period, date of heading, mature period and days of the growth and development of winter wheat in Chongqing area were drawn. The results provided the basis for fine spatial distribution of growth and development process on winter wheat.