利用1949-2007年的甘州区粮食生产长时间序列统计数据，分析了近60年来粮食产量变化趋势，并从耕地面积、粮食播种面积、粮食总产量、粮食单产、农作物种植结构、农业生产条件、复种指数等方面对粮食总产量的变化进行分析。结果表明：在耕地增幅较小、人口增幅大的背景之下，粮食总产量和人均粮食产量均增大。主要原因在于：①粮食单产持续的增加；②玉米大面积种植且高产；③农业机械总动力、农村用电量等农业生产条件的不断改善；④复种指数的提高。%Based on statistical yearbooks about grain production in Ganzhou county from 1949 to 2007 , this paper analyzes the changes of total grain production in 60 years, and explores the courses of grain production from cultivated land, grain-sown area, total grain yield, average grain yield per cap, crop planting structure, agricultural production condition, multiple crop index. Results show that total grain production and average grain yield per cap were increased under the background of the modest increase in cultivated land and large increase in population. And the causes are as follows:①Increasing grain yield per unit area;②Large- scale cultivation of corn and high yield of maize;③Improve-ment of farming condition, such as total power of agricultural machinery, rural electricity;④Improvement of the multi-ple crop index.
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