一、发展水稻生产节水栽培新技术的必要性当前人口、资源、环境和粮食是世界各国议论的焦点。水资源紧缺已成为许多国家或地区经济发展的障碍。因此,各国已把水资源保护与开发利用列入21世纪重要议程。而发展节水型农业则是实现这一目标的重要行动之一,也是世界水资源利用的方向。 I. The Necessity of Developing New Techniques for Water-saving Cultivation of Rice Production The present population, resources, environment and food are the focuses of discussion in various countries in the world. Water scarcity has become an obstacle to economic development in many countries or regions. Therefore, all countries have included the protection and development of water resources in the important agenda of the 21st century. The development of water-saving agriculture is one of the important actions to achieve this goal, but also the direction of world water resources.