Matters needing attention in the latest fertilization of cotton

Cotton as one of the main raw materials of textile industry in China, its planting area is very wide in our country, although cotton is not an edible food crop. However, its planting status is also one of the best in China, and the management of planting cotton is very important. Among them, fertilization is a necessary work in the management work, cotton fertilization is not as simple as imagined. Today, the editor will talk to you about the matters needing attention in cotton fertilization. Let's take a look at it.

1. Fertilization period

Although cotton is a more fertile crop, it also depends on the growth stage of cotton. Among them, the highest fertilizer requirement of cotton is from the period of vigorous growth to the stage of nutritional and reproductive growth. It is said that it is a period of prosperous growth, so the demand for nutrition is very large, which is about June-August of each year according to the normal planting time.

2. Application of plots

Cotton fertilization should also be based on the specific conditions of the plot, if the soil is fertile and nutrients are comprehensive, then there is no need for fertilization. When the cotton field is damaged by waterlogging, the loss of bottom fertilizer is serious and the land is de-fertilized, which hinders the root development and weakens the growth of cotton plants, it is necessary to apply fertilizer in time. Or it is observed that the plants have obvious symptoms of element deficiency, and the plots seriously damaged by diseases and insect pests are also the main plots for fertilization.

3. Fertilization time

When fertilizing, you can't choose to apply fertilizer when the temperature and humidity is high. When applying fertilizer in cloudy days, you should wait until all the dew of the plant is dried, because the dew will take away part of the fertilizer and affect the effect of fertilizer. When fertilizing on a sunny day, you should avoid the time when the temperature is the highest and the sun is strongest at noon, so as to prevent the sun from being too strong, resulting in burns to the leaves and faster evaporation of fertilizer. Especially in the application of foliar fertilizer, we must pay attention to the changes in the weather, if it rains after fertilization, wait until the rain stops and the water is dry.

4. Application concentration

The concentration of fertilizer must not be too high, we should mix different fertilizers and concentrations according to the planting varieties, if the concentration is too high, it will lead to burning roots and leaves, and the absorption and transportation of nutrients in cotton roots will be seriously hindered. The photosynthesis of leaves will also decrease, and the accumulation of photosynthetic matter will decrease, which is not conducive to cotton ball expansion and reduce its quality. Therefore, in the fertilization, we must control the concentration of the skin, when the concentration is too high to do a good job of dilution, reduce the concentration.

5. Fertilization method

There are many fertilizers for cotton, such as foliar fertilizer, base fertilizer and fruit-promoting fertilizer, and their fertilization methods are also different. For example, when applying foliar fertilizer, the tender leaves are selected as the fertilization target and applied on the back of the leaves. It is best to use drip irrigation, because the young leaves are very fragile, fertilization will lead to injury of the young leaves. When fertilizing, it is necessary to spray evenly, and foliar fertilizer can not be placed for too long, so foliar fertilizer is generally sprayed with spraying to ensure the effect of foliar fertilizer.

The above are the matters needing attention when fertilizing cotton, fertilization is a fastidious management work, do not think that casually spraying some pesticides in the cotton field. With the growth of cotton, the demand for fertilizer and nutrition is also different, so we fertilize according to the growth progress of cotton. Rational allocation of nutrients in fertilizer to ensure adequate and comprehensive nutrition for the growth of cotton.