In view of the current technical requirements arising from the construction of the ecological environment and the development of water-saving agriculture, the nature and types of water-retaining agents, water absorption mechanism, and application effects are briefly described, and the problems existing in the agricultural use of water-retaining agents are discussed.

Water retaining agent is a kind of high molecular polymer, which has the functions of drought resistance, water saving and water retention, and can greatly improve the quality of afforestation in arid areas. In my country, the promotion and application of water-retaining agents in Chinese pine, oriental arborvitae and other tree species are obvious. Because of its good water-retaining effect and low cost, it is more and more widely used in my country.

The application of water-retaining agent in the nursery, planting, and management of garden plants, and analyze the precautions in the application to improve the quality of garden engineering and reduce the cost of garden engineering and management.