Fertilization method for high yield of cowpea

Cowpea is the bean we often eat in our daily life. Cowpea is rich in nutrients and has a large planting area in our country. When planting cowpea, we should do a good job of fertilization to meet the nutritional needs of cowpea growth, improve yield and enhance the quality of cowpea. So how can cowpea be fertilized for high yield? The following editor will give you a brief introduction, let's have a look!

1. Apply sufficient base fertilizer

Although cowpea growth has a large demand for nutrition, its fertilizer tolerance is relatively poor. We should choose the planting soil before planting, mainly the soil with sufficient fertility, permeability and normal drainage and irrigation. , nitrogen fertilizer. Cowpea has the greatest demand for phosphate fertilizer during the whole growth period, so when applying base fertilizer, we should pay attention to increase the proportion of phosphate fertilizer, followed by potash fertilizer. However, it is mainly based on fully mature farm manure, and the dosage should be controlled according to the planting area when applying base fertilizer. Farm manure is generally in 2500kg/ mu, superphosphate in 30kg/ mu.

2. matters needing attention in the application of base fertilizer

The growth ability and growth of cowpea are relatively long, and its rhizobium is not very developed. Therefore, we should control the amount of fertilizer application according to the fertility of the soil. If the soil quality is good, the fertility is high, and when the previous crop is planted, the amount of fertilizer applied is large, then the amount of base fertilizer can be reduced appropriately. On the contrary, we need to increase the amount of base fertilizer. After applying the base fertilizer, it should be fully mixed with the soil to make ridges. Then apply other fertilizers to improve the soil fertility and promote the growth of cowpea.

3. Control first and promote later

The application of sufficient base fertilizer can enhance the growth ability of cowpea rhizobia. To promote flower bud differentiation, there are no very strict requirements for water and fertilizer before cowpea enters the flower and pod stage. Therefore, water and fertilizer management is mainly controlled, if sufficient base fertilizer is applied, then there is no need to apply fertilizer. Because if the fertilizer nutrition is too much, it can easily lead to cowpea overgrowth, improve the position of inflorescence nodes, and form empty vines. After entering the flower and pod stage, it is appropriate to change the control to promote the growth of cowpea.

4. Topdressing at podding stage

After the cowpea pods are set and the inflorescence appears, it should be properly topdressing once, mainly nitrogen, phosphorus and potassium fertilizer, combined with watering. After entering the podding period, it is necessary to keep the soil moist. Water and fertilize once about half a month to ensure the normal growth of the plant. During the podding period, the farm manure with topdressing 1000kg per mu should be topdressing urea for every two harvests to increase the pod setting rate. After flowering, we should also properly spray foliar fertilizer to advance the ripening time of cowpea and increase the yield.

The above is a brief introduction of high-yield fertilization methods for cowpea. Cowpea fertilization is very important, which is closely related to yield and quality, so we must pay more attention to it. That's all for today's introduction. This article is for reference only. I hope it can help you all.