基于GIS的吉林省玉米生产发展时空变异分析

在吉林省玉米生产统计数据库建立的基础上，利用地理信息系统工具软件ArcView和MapGis制作吉林省历年玉米播种面积、单产和总产分布图，对吉林省玉米生产的时间和空间分布进行分析，阐述了吉林玉米生产时空变异的特点和发展趋势。对目前吉林省玉米生产的前景、限制因素以及发展对策进行了分析。结果表明：进入90年代，吉林省玉米生产发展迅速，播种面积、单产和总产均有较大幅度增加，玉米整体生产水平较高。以中部地区玉米生产水平最高，包括农安县、榆树县、扶余县、公主岭市等。目前吉林省玉米的生产已达到一定的规模，宜在稳定中求发展，适当压缩种植面积，调整作物布局，努力提高单产水平，改善玉米品质，加速产业化进程。

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.