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The application of water retention agents to combat soil and water loss on slopes is one of the most important tools .Water retention agent, also known as highly absorbent resin, super absorbent, solid water or polymeric absorbent, is a polymer with strong water absorption and water retention capacity made from a strong water absorbent resin.It can absorb a lot of water quickly and has the function of repeated water absorption.Absorption Water swells to hydrogel,it releases water slowly for seed germination and growing crops, thereby increasing soil water retention, improving soil structure, reducing deep water seepage and soil nutrient loss, and improving water utilization. Water holding agent is suitable for use in areas with low precipitation, irregular annual rainfall distribution and lack of irrigation water.
It is reported that the using of water retention agent can improve the seedling emergence rate of ryegrass, improve its resistance to drought, reduce the amount of irrigation, and make it emerge earlier. The experiment showed that the use of water retention agents in slope afforestation of roadbeds could increase the water content of soil in the rhizosphere, promote plant growth, improve the survival rate of seedlings by 7%, increase the amount of growth by 19.2%, and increase the soil water content by 1.83%.
Reminder: water retention agent is not a water-making agent, when using it should make it fully absorb water in order to play the role of water retention. Different manufacturers produce different properties of water retention agents, must be compared with the instructions, according to the requirements of the standard use, in order to achieve the best results.
