农业资源利用模式间的转换及案例分析

MECHANISM TRANSFORMATION AMONG AGRICULTURAL RESOURCES UTILIZATION MODELS AND CASE ANALYSIS

目前我国农业仍然属于资源高耗低效型农业，而农业自然资源是非常有限的，为此必须实现农业资源的高效利用。本文从中观区域尺度上研究了农业资源利用模式及不同利用模式间的转换，通过案例分析认为，农业资源利用模式处于不断演替过程中，其演替具有明显的层次性；在演替过程中，物化资源投入水平不断增加，农业资源利用效率不断提高；与农业资源利用模式相适应的农业资源利用技术体系也具有多样性和层次性。

At present, agriculture still belongs to high resources consumption low benefit type of agriculture in China. However, as agricultural natural resources are limited, high benefit utilization of agricultural resources must be achieved. Agricultural resources utilization models and mechanism transformation among deferent models are studied in this paper from mesoscopic regional point of view.Case analysis indicated that agricultural resources utilization models are in change process, and this process has distinct hierarchies ;material resources input level in the change process is added, agricultural resources utilization efficiency is increased;and agricultural resources utilization technology system adaptable to agricultural resources utilization model has diversity and hierarchies.