The SAP is working as water-retaining agent and is applied to the root system of the plant.
After rainfall or irrigation, SAP absorbs and preserves the excess water in the soil, including water-soluble fertilizers, to form a large number of underground “mini-reservoirs”, which are slowly released when the plants need it.
In this way, it can not only ensure the water required for the normal growth of plants, but also prevent the water from being wasted due to evaporation, leakage and loss, and keep the soil moist for a long time.
It can absorb and release water repeatedly, which can be used by plants slowly.
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