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资源合理利用与生态环境保护已成为21世纪西部开发的战略核心. 实现这一战略, 对农业生产有着举足轻重的作用. 农业活动不仅关系环境健康与生态安全, 也关系人类的生存和发展. 西部地区农业可持续发展的关键是在保护生态环境的基础上, 提高水分和养分资源的利用效率. 位于西北
The rational utilization of resources and the protection of the ecological environment have become the strategic core of the development of the western region in the 21st century.To achieve this strategy plays an important role in agricultural production.Agricultural activities are not only related to environmental health and ecological security but also the survival and development of human beings The key to sustainable agricultural development is to improve the utilization efficiency of water and nutrient resources on the basis of protecting the ecological environment.