1. Water management
Moisture is very important for the growth of cotton plants. If the cotton is short of water, it will cause 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 aging. Therefore, in the season of water shortage in autumn, it is necessary to ensure sufficient water in the field. The water content of the soil should not be lower than 55%, but the moisture should not be too much. It should not cause water accumulation in the cotton field and affect the vitality of the roots. Therefore, we must prevent drought and control the prevention of disasters.
2, cultivating loose soil
After the cotton field is watered or after a rain, the soil compaction causes ventilation and ventilation to become difficult and affects the breathing of the roots. At this time, we should loosen the soil knots in time to improve the permeability of the soil. It not only promotes the absorption and nutrient absorption of cotton roots, but also reduces the phenomenon of cotton lodging and ensures the growth and yield of plants.
3, root dressing
In autumn, the light gradually decreases, and the photosynthesis of the leaves begins to decline. In order to improve the nutrient, we can spray the foliar fertilizer in an appropriate amount to promote the absorption capacity of the leaves and increase the rate of forming the bell. And when cotton is in the process, it consumes a lot of nutrients and needs a lot of potash, so we need to replenish nutrients in time to promote the topping. Top dressing is mainly based on spraying foliar fertilizer. It should be noted that it should not be carried out at higher temperatures.
4, to prevent gluttony late maturity
Greed and late maturity is one of the problems that many food crops will have. Many farmers will continue to use excessive amounts of nitrogen fertilizer in order to increase production and promote plant growth. Improper application time and excessive nitrogen fertilizer will cause the plant to grow long and be late and ripe, affecting the cracking time of the boll and reducing the quality. However, depending on the variety, the late-ripening variety can be properly sprayed for ripening.
5, appropriate pruning
The pruning work is very important. After one year of growth, the plants will naturally have various old leaves and diseased branches. We should promptly remove the aged leaves, the unsuccessful branches, etc. in time. Then knock off the tip of the branch. If the planting density is too large, the adjacent plants should be controlled to form a "human" shape after the rain. It ensures the light of all plants and enhances the permeability of cotton fields.
6. Pest control
It is necessary to do a good job in the prevention and control of pests and diseases, especially the high-yield yellow leaf dead and cotton bollworm in the autumn. Prevention and control of yellow leaf dead disease can be followed by application of potassium fertilizer and appropriate amount of trace elements and other fertilizers. Pest control can be sprayed with strong pesticides such as trichlorfon. Be careful not to overdo it. Excessive amounts may also have a certain impact on the plants.
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