How to prevent tall Cotton Seedling

Cotton is planted all over our country, and the planting history in our country is also very long. However, when we grow cotton, if we do not manage it properly, then there will often be some problems. And tall seedling is one of them, cotton tall seedling will seriously affect the yield and quality of cotton. So how can we prevent tall cotton seedlings? The following editor will give you a brief introduction, let's have a look!

1. Timely chemical control

When we plant cotton, we usually have to control it twice at the seedling stage. It should be carried out at the cotyledon stage for the first time, the main purpose is to thicken the root and avoid the phenomenon of large and small seedlings of cotton. After the cotton seedlings are complete, the cotton seedlings can be properly sprayed with metoprolol to promote the growth of cotton seedlings. Then the second chemical control work was carried out when the cotton seedlings grew two true leaves. At this time, cotton is very sensitive to thalidomide, so it is necessary to reduce the dosage appropriately. At this time, the main purpose of chemical control is to promote the flower bud differentiation of cotton and advance the budding time.

2. Proper ploughing

If we want to prevent the emergence of tall seedlings of cotton, then we also need to do a good job of intertillage. By ploughing, we can loosen the ploughing layer of the soil. To create a suitable growth environment for the growth of cotton plants. Control temperature, light, moisture and so on, accelerate the evaporation rate of soil water, and can also cut off part of the root system of the plant. Inhibit the growth of cotton stems and leaves and avoid the formation of tall seedlings.

3. Seal the soil in time

Proper soil sealing can create a good growth environment for cotton roots. It is very beneficial to improve the permeability of soil and promote the development of new roots. Because if the soil is sealed, it can prevent the soil from being too salinized, raise the soil temperature, promote the growth of cotton roots, and ensure the smooth growth of cotton seedlings. The time of sealing the earth is usually around May every year, not too early or too late. If the soil is too alkaline too early, the survival rate of seedlings is low, while if it is too late, the soil moisture is serious, the soil temperature is insufficient, and cotton seedlings rise slowly, thus forming tall seedlings.

4. Fertilization to promote seedlings.

Tall seedlings are actually a kind of weak seedlings, so it is very important to promote seedling growth at this time. Generally, after each ploughing, an appropriate amount of potassium dihydrogen phosphate, urea and other fertilizers can be sprayed per mu. At the same time, appropriate amount of brassinolide and other growth regulators can be added. In particular, attention should be paid to fertilizing cotton seedlings before they grow three true leaves. If the cotton lacks potash fertilizer at the seedling stage, it will affect the photosynthesis of cotton and cause the seedlings to get sick easily and cause root rot. Finally, we also need to do a good job in the prevention and control of cotton thrips to avoid diseases and pests harming the growth of cotton seedlings.

The above is a brief introduction to how to prevent cotton seedlings. That's all for today's introduction. This article is for reference only. I hope it can help you all.