Cotton technology in the middle and late stages of management

The management techniques of cotton in the middle and late stages of growth are as follows:

Cotton field management, in the middle and late stages of cotton growth, it is necessary to strengthen the management of fertilizer and water. Generally, 2-3 times of drip irrigation can be carried out, and urea can also be applied during drip irrigation. Premature deficiencies in cotton fields, to ensure irrigation, push the water time of Salt Lake City, after watering, spray with potassium dihydrogen phosphate foliar fertilizer + plant electronic fertilizer every 7-10 days, spray 1-2 times. For late-maturing varieties, manual pruning, pushing plants and ridges can be used to complete cotton field management.

Prevention and control of pests and diseases, cotton bollworm, aphids, red spiders, bell disease, etc. in the middle and late stages of cotton fields, cotton fields with more serious damage should be used in a timely manner, unified spray control. Pests and pests should use targeted drugs to carry out effective rule of law and achieve the right medicine.

Scientific harvesting. If it is harvested by hand, it should be collected according to the standard classification. If it is harvested, it should be selected according to the cotton field growth, cotton variety, population density and other scientific selection of defoliants. The cotton wool on the top of the cotton is basically mature, 80%. The above cotton bolls are for more than 45 days and the temperature is stable at 18-20 °C. When the cotton leaf defoliation rate is over 90% and the boll opening rate is over 95%, mechanical harvesting can be carried out.

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