Main points of application of compound fertilizer

Compound fertilizer is a kind of fertilizer which is widely used in our daily life. For growers, compound fertilizer is the key to ensure crop yield. However, when using compound fertilizer, there are not only a lot of points for attention, but also a lot of key points for use. So what are the main points for the use of compound fertilizer? Today, the editor will give you a brief introduction. Let's take a look at it.

1. Use concentration

The concentration of compound fertilizer is quite different, so when using compound fertilizer, the first key point is to pay attention to its concentration. Most compound fertilizers are generally allocated according to the soil type of the planting area and the law of crop fertilizer demand. Therefore, the types of compound fertilizers in the market are divided into three categories, such as high, medium and low concentration. The nutrient content of low concentration compound fertilizer is about 25%, that of medium concentration is about 35%, and that of high concentration is more than 40%. Therefore, the appropriate concentration of compound fertilizer should be selected according to different planting areas and crops. Among them, high concentration compound fertilizer is mostly used in cash crops, which has the advantages of good quality, less residue and high utilization rate.

2. Untouchable seeds

When using compound fertilizer, we should be careful not to let it touch the seed directly. Especially for high concentration compound fertilizer, because the concentration of compound fertilizer is very high. Therefore, if the compound fertilizer is in direct contact with the seeds, it will have a great impact on the emergence of crops. It is easy to burn seedlings and roots, but also affects the yield. So when we sow seeds, no matter whether the sowing method is strip application or hole application. Should keep at least a distance of more than 5 cm from the compound fertilizer. Compound fertilizer must not be applied at the same time with seeds to avoid fertilizer damage.

3. Scope of use

Because there are many kinds of compound fertilizer now, the raw materials of its ratio will also be different, so we should pay attention to the range of its nutrients. With different concentrations, the raw materials used in the compound fertilizer will be different. Therefore, when using it, it should be selected and used according to soil type and crop variety. For example, if it is a compound fertilizer containing nitrate, then the compound fertilizer with ammonium ion should not be used in leafy vegetables and paddy fields, and should not be used in saline-alkali soil. Otherwise, it will not only lead to the decline of fertilizer efficiency, but also lead to crop toxicity.

4. Deep application of covering soil

Compound fertilizer contains at least two or more large amounts of elements. Nitrogen, phosphorus and potassium is one of the most basic, in which nitrogen is easy to volatilize and easily lead to erosion and loss by Rain Water. And the elements of phosphorus and potassium are easily fixed by the soil. In particular, the movement of phosphorus in the soil is small, so if applied to the surface, crop roots can not be effectively absorbed and utilized. It is also very disadvantageous to the deep roots of crops, and if the drought, the fertilizer can not be dissolved, its fertilizer efficiency will be even worse. Therefore, when applying compound fertilizer, it is best not to spread it on the surface, but to cover the soil deeply.

The above is a brief introduction to the main points of the use of compound fertilizer. That's all for today's introduction. This article is for reference only. I hope it can help you all.