水是人类及一切生物赖以生存的必不可少的重要物质，同时也是工农业生产、经济发展和环境改善不可替代的极为宝贵的自然资源。而水资源的浪费现象又很严重，主要在农业用水和人们的生活用水上。提高农业灌溉用水的质量和节约生活用水对水资源的短缺可起到很大的缓解作用。提高农业灌溉用水的质量就要节水灌溉。%Water is essential for human beings and all living things; it is also irreplaceable resource for industrial and agricultural production, economic development and environmental improvement. However, the waste of water resources is very serious, mainly on the agricultural water and water intended for human. Improving the quality of water for agricultural irrigation and conservation of water for life plays a large role in relieving water shortage. Improving the quality of water for agricultural irrigation means water-saving irrigation.
展开▼
