基于GIS的区域作物生产系统潜力分析

GIS-Based potential productivity analysis of regional crop production system

在区域气候数据库和作物生产数据库支持下 ,通过光、温、水、土、施肥、灌溉、社会等因子的逐步衰减 ,建立基于 GIS的作物生产潜力的估算方法 ,并定量分析江苏地区作物单产潜力、潜力系数和总产潜力及区域作物生产的开发优势。结果表明 :江苏省作物开发优势由北向南逐渐增大。就作物而论 ,棉花开发优势最大 ,油菜最小 ,粮食居中。就经济区而论 ,粮油棉开发优势不同 ,粮食 :太湖区 >沿江区 >沿海区 >宁镇扬区 >两淮区 >徐连区 ,棉花 :太湖区 >沿海区 >沿江区 >宁镇扬区 >徐连区 >两淮区 ,油料 :太湖区 >宁镇扬区 >沿江区 >沿海区 >两淮区 >徐连区。就同一经济区而论 ,粮油棉的开发优势也不同 ,徐连区 :棉花 >粮食 >油料 ;两淮区 :棉花最大 ,粮食和油料相当 ;宁镇扬区 :油料最大 ,粮食和棉花相当 ;沿江区 :粮油棉的开发优势相当 ;太湖区 :棉花最大 ,粮食、油料相当 ;沿海区 :棉花 >粮食 >

Based on the support of GIS, the regional agricultural climate database and crop production database, the method for calculating the region based crop potential productivity was established, by means of the factor attenuation of solar radiation, temperature, water, soil, fertilization, irrigation and the social factor. The crop potential yield per unit area, potential coefficiency, total potential productivity, and the developing advantage of crop production were analyzed qualitatively in Jiangsu Province. The results show that from north to south, the developing advantage of crop potential productivity increases gradually. Taken crop into account, cotton has the biggest developing pttential, rape has the smallest and grain is in the middle. In terms of economic zones, the developing advantage of grain, oil bearing products and cotton is different. For grain, the Tai Lake Region>the region along the Yangze River>the coastal region>the Nanjing Zhenjiang Yangzhou Region>the Lianghuai Region>the Xuzhou Lianyungang Region; for cotton, the Tai Lake Region>the coastal region>the region along the Yangze River>the Nanjing Zhenjiang Yangzhou Region>the Xuzhou Lianyungang Region>the Lianghuai Region; for oil bearing products, the Tai Lake Region>the Nanjing Zhenjiang Yangzhou Region>the region along the Yangze River>the coastal region> the Lianghuai Region>the Xuzhou Lianyungang Region. In the same economic region, the developing advantage of grain, oil bearing products and cotton is also different. In the Xuzhou Lianyungang region, cotton> grain >oil bearing products; in the Lianghuai Region, cotton is the most advantageous, grain and oil bearing products are relatively similar; in the Nanjing Zhenjiang Yangzhou Region, oil bearing products are the most advantaged, grain and cotton are similar. In the region along the Yangze River, grain, oil bearing products and cotton have similar development advantage. In the Tai Lake Region, cotton is the most advantageous, grain and oil bearing products have similar developing advantage; in the coastal region, cotton> grain >oil bearing products.