Management methods of Cotton in Autumn

Now the weather has gradually cooled down, and it has officially entered autumn, and the management of cotton has also reached the final critical period. Many friends' early management is very good, that is, in the final stage, the management is relaxed, resulting in the output of cotton is still not satisfactory. In fact, the management of autumn is very important, so how to manage cotton in autumn? The following editor has brought the management technology of cotton in autumn, let's have a look!

1. Water management

Water is very important to the growth of cotton plants. if cotton is short of water, it will lead to a large amount of ethylene gas in the cotton field, which will affect the growth of the plant and cause a series of physiological phenomena such as premature senility. Therefore, in the season of water shortage in autumn, it is necessary to ensure that there is enough water in the field, and the water content of the soil should not be less than 55%, but the water content should not be too much, so as not to cause stagnant water in the cotton field and affect the vitality of the roots. Therefore, we should not only prevent drought, but also reasonably control and prevent waterlogging.

2. Ploughing and loosening the soil

After watering the cotton field or after experiencing a rain, the soil hardening makes ventilation difficult and affects the respiration of the roots. At this time, we should loosen the soil and remove the soil plate in time to improve the air permeability of the soil. It can not only promote the respiration and nutrient absorption of cotton roots, but also reduce the lodging phenomenon of cotton and ensure plant growth and yield.

3. Extra-root topdressing

The light decreases gradually in autumn, and the photosynthesis of leaves begins to decline. in order to improve nutrients, we can spray appropriate amount of foliar fertilizer to promote the absorption capacity of leaves and improve the boll rate. And when cotton is fruitful, it consumes a lot of nutrients and needs a lot of potash fertilizer, so we should replenish nutrients in time to promote capping. Extra-root topdressing is mainly spraying foliar fertilizer, it should be noted that it is not carried out when the temperature is high.

4. Prevent greedy green and late ripening

Greedy green late ripening is one of the problems in many food crops, many farmers will continue to use too much nitrogen fertilizer in order to increase yield and promote plant growth. Improper and excessive application of nitrogen fertilizer will cause overgrowth of plants and late ripening, which will affect the cracking time of cotton bolls and reduce the quality. However, it also depends on the variety, late-maturing varieties can be properly sprayed to accelerate ripening.

5. Proper pruning

Pruning work is very important, plants will naturally appear a variety of old leaves, diseased branches and so on after growing for a year. We should remove the aged leaves and branches that cannot bear fruit in time. Then knock off the tip of the branch. If the planting density is too high, then the adjacent plants should be controlled to form a "human" shape after the rain. It can not only ensure the light of all plants, but also enhance the permeability of cotton field.

6. Pest control

It is necessary to do a good job in the prevention and control of diseases and insect pests, especially in the high incidence of frontal yellow leaf blight and cotton bollworm in autumn. The control of yellow leaf blight can be carried out by topdressing potassium fertilizer and appropriate amount of trace elements. Pest control can use powerful trichlorfon and other pesticides spraying, pay attention not to excessive, excessive may also have a certain impact on the plant.

The above six points are the techniques for managing cotton in the fall, and these are some of the things we need to do well in the fall. All aspects of management in order to ensure the yield of cotton, we should pay attention to the application of fertilizer, can not be partial application, can not be overapplied, because incorrect fertilization will have a certain impact on plant growth. That's all for today's introduction. I hope you can plant high-yield cotton smoothly.