The Role of Polyacrylamide in Agriculture Introduction

January 04, 2024

Polyacrylamide is one of the linear Polymers and is insoluble in most organic solvents. It is often used as a Flocculant because of its good flocculation effect.

Polyacrylamide (PAM) itself is non-toxic, in agricultural production can be used as a soil structure improver, not only water retention, but also soil retention, fertilizer retention, heat preservation, yield and other functions.

The popularization and application of PAM in agriculture is of great significance to improve the utilization rate of irrigation or precipitation in arid and semi-arid areas.

Polyacrylamide

Water retention effect:
Adding PAM to the soil can increase the water content of soil, inhibit the formation of soil crust, and increase water intrusion.PAM can increase water intrusion, increase the water content of soil, and maintain the water content of the soil for a period of time after rainfall or irrigation.The larger the amount of PAM applied, the better the effect of water retention, but when the amount applied is too large, it will have the opposite effect. The general recommended application rate is 3-12KG/km³.
Fertilizer retention effect:

Polyacrylamide PAM can also affect the soil adsorption of fertilizers, PAM by stabilizing the water-stabilized agglomerate structure as well as the adsorption of fertilizer elements, inhibit the loss of fertilizer elements, and improve the utilization rate of fertilizers. After PAM treated soil damage, organic matter, quick-acting phosphorus, quick-acting potassium, quick-acting nitrogen content increased significantly. A large number of practice has proved that the use of PAM can improve the efficiency of fertilizer 25% - 60%.

Polyacrylamide

Insulation effect:
Application of PAM soil, water is adsorbed by the reticulation structure, the free water is reduced, the soil conductivity is reduced, the soil temperature is low during the day, high at night, and the daily temperature difference is reduced, which is conducive to the growth of crops.
Yield increasing effect:
The application of PAM enhances the water retention and fertilizer retention of the soil, strengthens the soil's granular structure, improves the soil's permeability and drought-resistant ability, improves the soil's environment, provides a relatively superior environment for the growth and development of crops, and significantly improves crop yields. Experiments have proved that wheat yield can be increased by 9% by spreading PAM at a dosage of 18KG/Km.

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