Fertilizer requirement Law of Peanut

Peanut is not only a kind of food crop, but also an important oil crop, and its planting area is very large in our country. When planting peanuts, fertilization is very important if you want to improve the yield and quality of peanuts. When fertilizing peanuts, we first need to understand the fertilizer law of peanuts. So today, the editor will give you a brief introduction to the fertilizer law of peanuts. Let's take a look at it together.

First, the law of fertilizer demand

When planting peanuts, if you want peanuts to grow and develop normally. Then not only need sufficient nitrogen, phosphorus, potassium and other major elements, but also pay attention to calcium, magnesium, sulfur, zinc, copper and other trace elements. During the whole growth period of peanut, the absorption ratio of nitrogen, phosphorus, potassium and calcium by peanut is generally about 3VR / 04V / L / 06. However, peanuts themselves have rhizobium, and if they rely on rhizobium, the amount of nitrogen supply can reach about 75%. Therefore, the actual demand for nitrogen fertilizer is not very large, but there is a great demand for potassium and calcium. In addition, we should also pay close attention to the supplement of various trace elements.

II. Principles of fertilization

1. Seedling stage

When fertilizing peanuts, fertilizers should be mainly organic fertilizers and supplemented by chemical fertilizers. Apply sufficient base fertilizer, and also do a good job of topdressing. Topdressing is mainly carried out at seedling stage, flowering stage and strong fruit stage, and nitrogen, phosphorus, potassium and calcium should be applied together. In the 4-leaf seedling stage, an appropriate amount of available nitrogen fertilizer should be applied. It can effectively promote early branching and increase the number of flowers and pods. Generally to peanut special fertilizer, urea and other fertilizers, can also be applied sufficient human and animal manure water to ensure the normal growth of peanuts.

2. Flowering and podding stage

At the beginning of the flowering period, the demand for nutrition of peanuts increases sharply. However, rhizobium will also begin to supply nitrogen to peanuts, so we should pay attention to controlling the amount of nitrogen fertilizer used. If too much nitrogen fertilizer is applied, it is very easy to lead to excessive growth of stems and leaves in the later stage of peanut and inverted seedlings now. Therefore, after peanuts bloom, there is generally no need to apply nitrogen fertilizer. The main purpose is to ensure the normal growth of peanut by applying appropriate amount of compound fertilizer and calcium fertilizer during the initial flowering period of peanut.

3. Pod filling stage

We also need to pay more attention to the filling period of peanut pods. At this time, the demand for phosphorus in peanuts will increase. Therefore, we should pay attention to the timely supplement of appropriate amount of phosphorus. Phosphorus supplement can be carried out by spraying phosphorus on the outside, spraying appropriate amount of foliar fertilizer and potassium dihydrogen phosphate and so on. About once a week, keep spraying for a month or so. The supplement of appropriate phosphorus is closely related to the yield and quality of peanuts, so we must pay more attention to it.

The above is a brief introduction to the law of peanut fertilizer requirement. That's all for today's introduction. This article is for reference only. I hope it can be helpful to everyone.