As a new type of fertilizer, controlled release fertilizer can not only improve the utilization rate of fertilizer, but also prevent environmental pollution. So, what exactly is a controlled release fertilizer? What are the advantages of controlled release fertilizers? Let us continue to look down with these questions!
What is controlled release fertilizer
Controlled-release fertilizers extend the decomposition and release time of fertilizers by coating, wrapping, and adding inhibitors, which is beneficial to improve the utilization of fertilizer nutrients, so as to achieve the purpose of extending the effective period of fertilizers and promoting agricultural production. It is one of the key fertilizers promoted by the Ministry of Agriculture.
Common controlled-release fertilizers can be roughly divided into: sulfur coating (fertilizer coating), resin coating, urease inhibitor, etc. According to different production processes, they can be further divided into: compound type, mixed type and blended type.
Advantages of controlled release fertilizer
1. Improve the utilization rate of chemical fertilizers and reduce the amount of chemical fertilizers
Controlled-release fertilizer can control the release of nutrients, make the release of nutrients basically synchronized with the demand of crops, and effectively improve the utilization of nutrients in the season; the released nutrients can not only meet the needs of crop absorption and utilization, but also do not cause root burning. Seedlings and losses and waste.
2. Improve soil physical properties
In addition to improving fertilizer utilization and crop yield, controlled-release fertilizers can also improve the physical and chemical properties of the soil. Resin-coated urea can increase the soil moisture content, increase the effectiveness of soil moisture, and improve the water retention and release properties of the soil.
3. Reduce the frequency of fertilization and save labor
Due to lack of labor in rural areas or due to lack of water and untimely water supply, crop fertilization is becoming more and more simplified, and one-time fertilization of crops has become quite common. Controlled-release fertilizers can be designed to design the release mode of fertilizers during the crop growing season, so that the fertilizer nutrient release law is consistent with the crop nutrient absorption, and one-time fertilization can meet the needs of the crops throughout the growing season. When corn and wheat are planted, fertilizer is applied once, and there is no need to apply fertilizer until harvest.
4. It can reduce crop diseases and improve the quality of agricultural products
Crop diseases and product quality are related to the amount of nitrogen fertilizer. The application of controlled-release fertilizers can prevent excessive absorption of nitrogen by crops, thereby inhibiting diseases and improving quality.
5. Reduce environmental pollution
Studies have shown that controlled-release fertilizers can reduce the gaseous and leaching losses of chemical fertilizers, thereby improving the utilization efficiency of chemical fertilizers, and less environmental pollution caused by improper use of fertilizers.