At present, the lack of trace elements in crops is becoming more and more common, and the supplementation of trace elements in the soil is getting more and more attention from farmers. So what is the role of medium and trace element fertilizers? What is the application rate of medium and trace element fertilizers?
Fertilizer effect of trace elements
1. Increase the yield of crops
Medium and low-yield fields account for more than 70% of the total arable land. Due to the long-term excessive use of N, P, K and other macro-element fertilizers, the soil quality of some high-yield fields has deteriorated, and the increase in yield has been limited. Targeted application of micro-fertilizers is an effective technical measure to increase the yield of medium and low-yield fields, and it is also an important means to maintain continuous increase in high-yield fields.
The application of micro-fertilizers to different crops in different regions has a very obvious effect of increasing yield. Generally, it can reach 5% to 50%, especially in the middle and low yield fields. In some areas where there is a serious shortage of trace elements, targeted use of trace elements in fruit trees and vegetables can increase the yield by up to 100%.
2. Improve crop quality
The application of a large number of all-element compound fertilizers greatly improves the inorganic nutrient balance of crops, which not only greatly increases crop yields, but also greatly improves the quality of agricultural products. Some diseases caused by local nutrient deficiency can be effectively prevented and treated. Agricultural products, especially grains, vegetables, and fruits, have higher levels of protein, sugar, vitamins, and trace elements, and have better flavors. They can also increase fiber strength for economic crops such as cotton and kenaf.
3. Reduce crop pests and diseases
Due to the application of trace element fertilizers, various elements required by crops have been supplied in a balanced and reasonable manner, which greatly enhances the ability of crops to resist disease, cold, high temperature, and drought. For example, after boron is applied to crops, it can promote the normal operation of sugars in the body and strengthen the resistance. B-sugar complex is a complex with strong acidity, which makes the cell fluid reaction more acidic and is not conducive to the growth of pathogens.
Fertilizer dosage of medium and trace elements
The soil application amount of medium and trace element fertilizers is roughly the same as that of nitrogen, phosphorus and potassium fertilizers, or even more, while the soil application amount of trace element fertilizers is less. 0.5 to 1 kg. Cash crops such as fruit trees and vegetables are taller, generally not exceeding 3 to 5 kilograms per mu. Therefore, before sowing or transplanting, the micro-fertilizer is mixed evenly with moisture-dried soil or decomposed organic fertilizer, and then it is applied in furrow or hole together with the base fertilizer. In addition, most micro-fertilizers and phosphate fertilizers will form insoluble substances after mixing, which will reduce the efficiency of each other, so do not mix them together.