Polyacrylamide as a soil structure improvement agent, can increase the cohesion between soil surface particles, maintain good soil structure, prevent soil crust, increase soil infiltration rate, reduce surface runoff, prevent soil loss and have good ability to inhibit soil evaporation.

1, Effect of polyacrylamide on soil physical properties

Polyacrylamide can effectively improve the soil structure, make the number of soil macro aggregates increased as the increase of the surface roughness of soil, reduce soil bulk density, soil total porosity and capillary porosity increased, and the soil particles and the pore structure remained stable, the soil infiltration rate is significantly improved and increased soil water content.  

2, Soil, water, fertilizer and polyacrylamide to prevent flow failure should be

Applied research (PAM), increased the difficulty of runoff erosion. Under water wetting, PAM begins to react, composed of granular into branchy fibrous particle tightly wound to maintain soil structure stability, can significantly reduce soil surface crust formation and reduce raindrop impact force and reduce the damage on the soil surface runoff, and soil subsidence coefficient, coefficient of structure, the content of soil particle level and all levels of water stable aggregate to the increase of the soil to water and permeability coefficient, so as to reduce the surface runoff, reduce surface erosion of the role, the soil fertility is maintained.

3, Polyacrylamide could increase yield

PAM in preventing soil erosion increased soil retention of water and fertilizer, improving soil, loose soil structure, increases the aggregate structure of the soil, improve the soil permeability and the ability of fight a drought, provided the conditions for the production of crops.  

Application rate, application method and application of polyacrylamide

    Application rate, application method and application of polyacrylamide

    It can be seen that the use of PAM is very different. This shows that different product types, different soil has a great impact on the amount of its application, and its application effect is different with the different soil type and application method. In a word, the effect of using solution is better than that of PAM directly. In general, the use of anion PAM as a soil conditioner is more valuable. This is because the anion polyacrylamide price than other lower and molecular weight of general than cationic, non ionic PAM and anion through adsorption of cationic bridge loose easily across different clay and form a network. Using PAM as the soil structure, the cohesion of soil surface layer can be increased, and the soil structure is maintained. It can prevent soil crust, increase soil infiltration rate, reduce surface runoff, prevent soil loss and have good inhibition of soil evaporation. In June 1995, PAM USDA was registered as a commercial product in the western states of the United States. In 1994, NRCS PAM was used to control the temporary use of PAM for controlling soil erosion caused by irrigation. The amount of PAM was 10mg/Kg, and the application of PAM was required in the first irrigation or irrigation of the soil.

Application rate, application method and application of polyacrylamide