Analysis on the Templral and Spatial Change of Maize Production Devel Opment in Jilin Based on GIS

Based on the database of the maize statistics in Jilin,the tool sofeware Arcview3.2 and MapGis6.5 were used to map the sown area, per unit area yield and total yield of maize of each county in Jilin. The temporal and spatial change of maize production in Jilin was analyzed by taking the distribution of maize production in 1980, 1985, 1990, 1995, 2000 and 2005. The results showed that maize production in Jilin has been rapidly developed since 1990, and the maize growing area, per unit area yield and total yield have been greatly increased,and the middle part of Jilin had the highest production include Nongan, Yushu, Fuyu and Gongzhuling. The maize production in Jilin has been reached a certain scale.Maize, however,can not be continuously cropped during a long period of time. It was suggested to control the sown area, enhance the per unit area yield and quilty, and boost industrialization of maize production in Jilin.