After the emergence of cotton, it enters the period of vegetative growth and reproductive growth, and it is still dominated by vegetative growth. This period will not only meet the needs of cotton plants, but also prevent excessive fertilization, resulting in long growth of cotton plants.
The proper amount of nitrogen, phosphorus, potassium, and micro-fertilizers can be used in buds during the cotton field, which can be used as buds and fertilizers, stably growing strong trees, and increasing the function of protecting bolls. The sooner or later, and the amount of topdressing during the bud period will depend on the soil fertility and cotton growth.
For the cotton field with a small amount of basal fertilizer, it is possible to apply some human fecal urine and cake fertilizer during budding, or mix a small amount of available nitrogen fertilizer, and deepen the ditch, so that the fertilizer gradually decomposes to play a role in the flowering period, while spraying outside the roots. 0.5% urea and 0.2% potassium dihydrogen phosphate mixed solution, to promote seedlings to catch large seedlings, transformation and upgrade, send hair frame.
Generally, in the cotton field, the urea topdressing urea is 5 to 6 kg, diammonium and potassium sulfate are each 5 kg, zinc sulfate is 1 kg, and borax is 1 kg. About 15 centimeters from the plant, apply 15-20 centimeters deep to the ditch. Do not get too close to the main root. Strong seedlings are usually topped with deep cultivators during the Shenglei period.
For the fertile cotton fields that have a large amount of fertilization all year round, the cotton plants are growing prosperously, and the buds may not be applied, or may be postponed until the early flowering stage, so that “flowers and peaches are usedâ€.
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