资源边际效益与种植业结构调整目标规划

根据北京市统计资料和已有研究数据，运用数学规划模型，对北京市种植业结构调整的目标与资源的边际效益间的关系作了分析，把模型的最优解建立在较为合理的资源边际效益和目标边际成本的基础上。结果表明：要提高水的效益和种植业产值，必须控制粮食作物和饲料作物的种植面积，在可灌溉耕地上的露地作物均应实行喷灌，应大力发展设施农业并实行微灌。

Marginal revenues of resources and goal programming of planting industry structure

According to the statistical data of Beijing City and the known research data, the relationship between the goal of planting industry structure in Beijing and the marginal revenues of resources was analyzed by means of mathematical programming models in order to get the optimal solution based on both rational marginal revenues of resources and rational marginal costs of reaching goals. The results showed that in order to improve the efficiency of water use and the output value, the areas of growing food and feed crops should be controlled, sprinkling irrigation should be adopted for all the field crops in the irrigable areas, and establishment agriculture and relevant drip or filtration irrigation should be energetically developed.