Polymer resin plays a vital role in the slow-release fertilizer coating industry, and brings significant benefits to agricultural production through its unique technical characteristics and wide range of applications.
Industry application advantage analysis
1. Agriculture
1.1 Coated polymer resin slow-release fertilizer is widely used in the cultivation of field crops, cash crops and horticultural plants. It can slowly release nutrients according to the growth needs of crops, meet the nutritional needs of crops at different growth stages, and thus improve crop yield and quality.
1.2 In the production of discontinuous slow-release fertilizers, the polyester resin is used to spray the surface of the fertilizer core to form a protective layer to control the release rate of nutrients. This process is of great significance for improving fertilizer utilization and reducing the number of fertilization times.
2. Forestry
In forestry, coated polymer resin slow-release fertilizers are used to promote tree growth and improve soil quality. Due to the special properties of forest soil, slow-release fertilizers can provide a long-term and stable supply of nutrients, which helps the healthy growth of trees.
3. Horticulture
Coated polyester resin slow-release fertilizer is also widely used in horticulture and can be used for the maintenance of flowers, lawns and ornamental plants. It can provide a continuous and balanced supply of nutrients, keep plants in a healthy growth state, and prolong the flowering period.
4. Other fields
In addition to the above application areas, coated polyurethane resin slow-release fertilizers can also be used in lawn maintenance, urban greening, and soilless cultivation. In these scenarios, slow-release fertilizers can provide a stable and long-term supply of nutrients to meet the nutrient needs of different plants.
Technical Advantage Analysis
1. Nutrient release control
1.1 Coated polyester resin controls the release rate of nutrients through special coating technology. This coating is usually made of polymer materials and can adjust the release rate of nutrients according to factors such as temperature, moisture and soil microorganisms.
1.2 Different types of coating materials (such as sulfur, resin, insoluble mineral powder, etc.) have different controlled release effects. For example, sulfur-coated urea can slowly break and release nutrients under the action of moisture and microorganisms; while polyurethane resin-coated urea controls the osmotic pressure of nutrients through a semipermeable membrane.
2. Environmental friendliness
2.1 The use of coated polymer resin slow-release fertilizers can reduce the gaseous and leaching losses of chemical fertilizers, thereby reducing the risk of environmental pollution. Compared with traditional quick-acting fertilizers, slow-release fertilizers can increase fertilizer utilization to about 70%, or even higher.
2.2 In addition, some coating resin materials (such as modified hydrophilic polyurethane resin) have good natural degradability and environmental protection, and will not cause secondary pollution to soil and water bodies.
3. Improve fertilizer utilization
3.1Coated Polyester resin slow-release fertilizer can slowly release fertilizer nutrients according to the set release curve, which is consistent with the absorption law of crops. This matching improves the utilization efficiency of fertilizers and reduces waste.
3.2 At the same time, slow-release fertilizers can also promote the development of crop roots and enhance the ability of crops to absorb nutrients.
4. Flexibility and diversity
4.1 Polyurethane resin coated slow-release fertilizers can be flexibly adjusted according to factors such as crop types, growth environment and nutrient requirements. By changing the thickness and composition of the coating material or adding surfactants, slow-release fertilizer products with different release rates and durations can be prepared.
4.4 This flexibility enables coated polyurethane resin slow-release fertilizers to meet the fertilization needs of different crops and soil conditions, providing more choices and possibilities for agricultural production.
Conclusion
In summary, the application of coated polymer resin in the slow-release fertilizer industry is extensive and in-depth, and its technical characteristics make slow-release fertilizer have significant advantages in improving fertilizer utilization, reducing environmental pollution, and promoting crop growth. With the continuous development and progress of agricultural science and technology, the application prospects of coated polyester resin slow-release fertilizer will be broader.
