保护农业资源,恢复与保持农业生态平衡,是我国一项国策,是提高农、林、牧、付、渔整体生产力的前提,是实现“生物技术现代化”、“农业现代化”的立足点.土壤是陆地生态系统的基础,也是农业生产的基础.合理利用土壤,不断提高土壤肥力,是科学种田的标志,也是科学水平不断提高的反映.许多国家早已成立专门机构或制定相应的法律,保护土壤资源.那种只顾眼前,不顾长远,破坏土壤资源,降低土壤肥力的现象,更是我们社会主义国家所不能允许的.因此,保护和改良生态系统的物质基础——土壤,是顺利发展各种植业的重要基础和共同任务.要建立高产、稳产的农田、园林,首先就必须 Protecting agricultural resources, restoring and maintaining the balance of agricultural ecology is a national policy of our country and a prerequisite for improving the overall productivity of agriculture, forestry, animal husbandry, payment and fisheries, and is the starting point for realizing “modernization of biotechnology” and “agricultural modernization.” Soil It is the basis of terrestrial ecosystem and the basis of agricultural production.It is a sign of scientific farming and continuous improvement of scientific level that rational utilization of soil and continuous improvement of soil fertility have many specialized agencies in the world or corresponding laws have been established to protect the soil The kind of resources that we can not allow in the socialist countries can not be tolerated only by the immediate and long-term destruction of soil resources and the reduction of soil fertility. Therefore, the material basis for the protection and improvement of ecosystems - soils - is the smooth development of the various crops Industry, an important foundation and common tasks to establish high yield, stable production of farmland, gardens, first of all must