What are the characteristics of controlled release fertilizer? What is the difference between slow release fertilizer and slow release fertilizer?

Controlled-release fertilizer is an advanced form of slow-release fertilizer, which mainly controls the release of nutrients through coating technology to achieve the purpose of safety, long-term effect and high efficiency, which is the main direction of the development of modern fertilizer. it is suitable for mechanized production, especially to meet the needs of simultaneous sowing of seed fertilizer and so on. What are the characteristics of controlled release fertilizer? What is the difference between slow release fertilizer and slow release fertilizer?

What are the characteristics of controlled-release fertilizers?

1. High fertilizer efficiency and utilization rate

The nutrients of conventional fertilizers are evaporated by air, infiltrated underground, and washed away by surface water. Less than 30% of them are actually used by crops. And Nonglifeng polypeptide coated controlled-release fertilizer through, the control of the outer coating material to avoid the above loss is more than 80% fertilizer efficiency.

2. Save time and effort to liberate the labor force

With the use of Nonglifeng polypeptide controlled release fertilizer, most crops can be fertilized only once in a season, without fertilization for life, saving time and effort and reducing waste.

3. The effect of increasing production is obvious.

Through coating to control nutrient release, crop nutrient supply can be stable and regular, crop de-fertilization and overgrowth can be avoided, and the yield increase is mostly more than 200 jin / mu.

4. Long-term use to improve soil

After the release of nutrients, the empty shell can not only store water and preserve soil moisture, but also play the function of ventilation and fertilizer conservation, making the long-term solidified soil loose.

5. the effect of killing bacteria and disinfestation is obvious.

The coating material of Nonglifeng polypeptide controlled release fertilizer uses polysulfide compounds, which can kill bacteria and disinfect worms, and each bag of fertilizer sends more than ten jin of fungicides.

6. Supplement crop sulfur.

Sulfur is also an indispensable medium element for crop growth. The broken shell of Nonglifeng polypeptide controlled release fertilizer can directly participate in nutrient release and be absorbed by crops.

What is the difference between controlled-release fertilizer and slow-release fertilizer?

Both slow-release fertilizer and controlled-release fertilizer have longer fertilizer effect than quick-acting fertilizer. in this sense, there is no strict difference between slow-release fertilizer and controlled-release fertilizer. However, from the mechanism and effect of controlling the nutrient release rate, there is a difference between slow-release fertilizer and controlled-release fertilizer.

The release of slow-release fertilizer is affected by many external factors, such as soil pH value, microbial activity, soil water content, soil type, irrigation water and so on. Fertilizer release is uneven, and the rate of nutrient release is not necessarily synchronized with the nutrient needs of crops; at the same time, most of them are monomer fertilizer, mainly nitrogen fertilizer.

Most of the controlled release fertilizers are N-P-K compound fertilizer or total nutrient fertilizer with trace elements. After being applied to the soil, its release rate is only affected by soil temperature. However, the soil temperature also has a great influence on the plant growth rate. In a relatively large temperature range, the soil temperature increases, the release rate of controlled release fertilizer is accelerated, at the same time, the plant growth rate is accelerated, and the demand for fertilizer is also increased.

Therefore, the release rate of controlled release fertilizer is consistent with the rate of plant demand for nutrients, so as to meet the nutrient needs of crops at different growth stages.