What should you pay attention to when mixing fertilizers? How to store unused fertilizer?
In spring, everything sprouts, and in a blink of an eye, it is almost horrifying, and the real spring is coming soon. The year is in spring, and the busyness of farming is mostly started in spring. Spring is a key period for field crop management, such as wheat, fruit trees, etc., which require top dressing. We know that there are many kinds of fertilizers on the market, and some fertilizers can also be mixed. How do you mix fertilizers? Let's take a look at them.
First, the principle of compounding fertilizer
Mixed fertilization should be based on certain principles, and it is best not to mix all the fertilizers. Therefore, we must first understand the characteristics of fertilizers and follow these principles in order to bring out the advantages of fertilizers.
1. After mixing two or more kinds of chemical fertilizers, the nutrients can not be lost, or the loss can not be excessive. This is the first thing we can guarantee. After some fertilizers are mixed, a series of chemical reactions can occur, which can cause nutrient loss or decrease. This situation cannot be mixed. For example, ammonium sulfate, ammonium chloride, etc. in ammonium nitrogen fertilizer can not be mixed with alkaline fertilizer. After mixing, it can increase the loss and volatilization of nitrogen, and lose or reduce the fertilizer efficiency. The nitrate nitrogen fertilizer cannot be acidic. Mixed with fertilizers, such as superphosphate. So as not to cause the decomposition of nitrate nitrogen, nitrogen loss.
2. When two or more kinds of chemical fertilizers are mixed, it should be mixed and used when it is beneficial to improve fertilizer efficiency and fertilization efficiency. After mixing, it not only improves the fertilizer efficiency, but also improves the efficiency of work and reduces the number of fertilization. The principle of this compound fertilizer is also recommended.
For example, we all know that when phosphate fertilizer is applied to the soil, water-soluble phosphate is easily fixed by the soil, so that the phosphorus nutrients move slowly, the moving distance is short, the probability of contact between nutrients and crop roots is reduced, and the ideal phosphorus supplement is not achieved. The purpose of the element; if the superphosphate is mixed with the organic fertilizer, the fixation of the phosphorus element can be reduced. Because superphosphate is mixed with organic fertilizer, it can reduce the chance of contact between phosphate fertilizer and soil. It can also decompose many organic acids by organic fertilizer and reduce the fixation of iron and aluminum to phosphorus in soil. In this way, the fertilizer is mixed, which not only improves the fertilizer efficiency, but also improves the efficacy.
3. After mixing several fertilizers, the final physical properties are not changed as good. Some fertilizers, although mixed, do not cause a chemical reaction, but cause their physical properties to change. For example, some fertilizers tend to agglomerate and squash after mixing, and increase the difficulty of operation when chasing, and even block the spread of farm tools. This is the case with urea and superphosphate, so try not to mix them together.
In addition, in addition to the fertilizer that cannot be mixed, we should also pay attention to the use of the mixed fertilizer as soon as possible, to avoid chemical reactions due to storage, or physical shape changes. For example, some fertilizers used immediately after mixing will not cause adverse consequences, but if stored for a period of time, nutrients will be lost. Mixing with nitrate nitrogen and superphosphate is no problem, but it will not work after a long time. It is easy to cause decomposition of nitrate nitrogen, causing nitrogen loss, and it will be deliquescent by the moisture in the air, and the physical properties are changed. It is ultimately difficult to use.
Second, chemical science preservation
In the storage and storage of chemical fertilizers, it is also an important link in scientific fertilization. It can be seen that the storage and storage of chemical fertilizers is also very important work. Because sometimes, the fertilizer we buy can't be used up in one time, or need to be reserved for later topdressing. Therefore, we need to store the remaining fertilizer, but we must have a scientific management during storage. In order to ensure the fertilizer efficiency.
1, separate storage
When there are many types of fertilizers, they must be stored separately. That is to say, two or more fertilizers cannot be placed in one container, which is exactly the opposite of ours. The main reason is to avoid the consequences of long-term storage, chemical reaction, and physical properties.
2, tightly packed
Some fertilizers have strong water absorption. If they are directly exposed to air, they will absorb water and deliquesce, even into a paste. For example, nitrate nitrogen fertilizer has a strong deliquescence ability. Therefore, the remaining fertilizer should be sealed and stored, or it can be kept in the original packaging bag.
3, fireproof and anti-corrosion
Some nitrate-nitrogen fertilizers will release oxygen or burn when exposed to high temperature or open flame, thus losing fertilizer efficiency and changing traits. In addition, chemical fertilizers that are acidic (superphosphate) or alkaline (ammonium hydrogencarbonate) cannot be combined with metal or not. Corrosion-resistant containers and materials are put together to avoid corrosion; and try not to store them with seeds so as not to affect the germination rate of seeds.
The above is about the introduction of chemical fertilizers. As an indispensable agricultural material, the use of chemical fertilizers must be correct and reasonable in order to allow crops to grow effectively.
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