Why shouldn’t cotton be closed during the budding stage? When is the best time to close cotton?
When the cotton grows to a certain stage, the branches and leaves in the middle and lower rows are interlaced, and only limited sunlight can be illuminated on the border. This is a closed row. The period of row closure varies depending on the strength of cotton growth, density and row spacing. Closing too early, insufficient lighting, and unbalanced growth will increase the shedding of buds. If the closure is too late, although there will be sufficient lighting, the utilization of land, lighting, etc. will be insufficient, which will reduce the total number of bells.
The closure of cotton in the bud stage is caused by excess fat and water, causing wild growth. Individual vegetative growth and reproductive growth have become imbalanced, and the population structure has become unbalanced.
Therefore, measures such as cultivating, chemical blending, and water management must be adopted in advance to avoid early closure of cotton.
When will the cotton trade be closed? According to production experience, it is better to close the rows of cotton with equal row spacing in late July; for large and small rows, it is better to close the small rows after July 10 and to close the large rows at the end of July. From then on, the degree of cotton row sealing should be maintained in a state of sealing the top and not sealing the bottom, and the boundaries between rows should be clear.
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