What methods are there to improve fertilizer use efficiency?
Fertilizer is a fairly key type of fertilizer in planting and production, and applying fertilizer reasonably can effectively increase crop yields. However, after applying fertilizer, many people find that the fertilizer use efficiency is relatively low and the crop yield is still not very ideal. Therefore, they all want to improve fertilizer use efficiency. So how exactly should we improve fertilizer use efficiency? Below, the editor will give a brief introduction for everyone. Let's take a look together!
1. Soil testing and formulated fertilization
Soil testing and formulated fertilization is one of the effective methods to improve fertilizer use efficiency. It involves testing the content of basic elements needed for crop growth, such as nitrogen, phosphorus and potassium, in the soil, and then carrying out reasonable fertilization according to the amount of nutrients needed when the planted crops grow. Apply only as much as the crops need, which can both meet the crops' nutritional needs for growth and prevent waste that leads to environmental pollution. Compared with conventional fertilization, soil testing and formulated fertilization can increase the per-unit yield of grain crops such as rice and corn by about 8%. Fertilizer use efficiency can also be significantly improved.
2. Balanced fertilization
When planting crops, when we apply fertilizer to them, we should pay attention to how much yield the crops produce. This is because, at a certain level of fertilization, crop yield and fertilizer use efficiency are closely related, usually showing a positive correlation. If the amount of fertilizer applied is increased too much, or a single type of fertilizer is applied alone for a long time, it is very easy to cause an imbalance in the nutrient environment and lead to reduced yield. So when we fertilize, it is not that the more fertilizer applied, the higher the crop yield will be. When determining the amount of fertilizer to apply, reasonable adjustments should be made according to climate, soil conditions and so on, so as to ensure fertilizer use efficiency.
3. Apply in combination with organic fertilizer
Applying chemical fertilizer in combination with organic fertilizer is an important point in fertilization. This is because organic fertilizer is very rich in nutrient elements and contains a variety of nutrients essential for crop growth. It can also improve soil structure and reduce the loss of chemical fertilizer, and can fix chemical fertilizer well, thereby improving fertilizer use efficiency. This is because when chemical fertilizer and organic fertilizer are applied in a mixed manner, the quick-acting nutrients in the chemical fertilizer can be adsorbed and combined by the organic fertilizer and then released again, which can both improve fertilizer efficacy and the duration of nutrient supply, and reduce nutrient consumption.
4. Concentrated deep application
When many people apply chemical fertilizer, the main application method is broadcasting. However, broadcasting actually has a great impact on fertilizer use efficiency, so when we apply chemical fertilizer, it is best to focus on concentrated deep application. For example, if nitrogen fertilizer is applied deeply, compared with broadcasting, its use efficiency can be increased by about 1/5. The use efficiency of phosphate fertilizer can be increased by 1/10. Moreover, if phosphate fertilizer and organic fertilizer are applied as a base fertilizer, then its use efficiency can be increased by about 35%. However, we still need to choose a suitable fertilization method according to soil properties. For example, sandy soil should follow the principle of small amounts applied more frequently.
The above is a brief introduction to how to improve fertilizer use efficiency. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!