| According to the land resource of Maiji district of Tianshui,the influence of climatic resource on the agricultural production and the available utilization degree of agricultural planting structure has been analyzed.According to the principle of the sustainable development of the rural economy,ecological environment benignity movement and so on,the agricultural planting structure has been analyzed and planed using the linear programming model.The result shows that the planting proportion of local summer crops,autumn crop and commercial crop is more reasonable than before,the total value of planting output increases by 14.8%,the planning goal has achieved.The scientific theoretical foundation for the availability of climatic resources and agricultural development has also been provided. |