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Key Technical Points and Precautions for Irrigating Cotton Fields

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Cotton is irrigated 3-5 times throughout the whole growth period, and irrigation should follow the principle of late first watering, quick second watering, and full third watering. The first watering is carried out at noon when the symptoms of water deficiency in cotton leaves are obvious, and it is best to wait until 10% of the plants in the cotton field have set bolls before applying the first watering. Generally, late June to early July is the best period for the first irrigation. For vigorously growing fields, delay watering until each plant has set 1-2 bolls. Strengthen water control to prevent excessive vegetative growth; the amount of the first irrigation should be small, with a water volume of 50-60 cubic meters per mu. The interval between the first and second watering is 8-10 days, and the second

Cotton is irrigated 3-5 times throughout the whole growth period, and irrigation should follow the principle of late first watering, quick second watering, and full third watering. The first watering is carried out at noon when the symptoms of water deficiency in cotton leaves are obvious, and it is best to wait until 10% of the plants in the cotton field have set bolls before applying the first watering. Generally, late June to early July is the best period for the first irrigation. For vigorously growing fields, delay watering until each plant has set 1-2 bolls. Strengthen water control to prevent excessive vegetative growth; the amount of the first irrigation should be small, with a water volume of 50-60 cubic meters per mu. The interval between the first and second watering is 8-10 days, and the interval between the second and third watering is 10-15 days, with the degree being that no cracks appear on the ground surface, and the water volume is 70-80 cubic meters per mu. The fourth watering should be flexibly controlled according to the weather, the soil, and the cotton; the time to stop watering is around August 10, and no later than August 20.

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