Key points of cotton seedbed management

During the period of cotton sowing this year, the weather is good and the light is sufficient. At present, a large area of cotton has been fully planted and has entered the stage of seedbed management. Specifically, we should pay attention to the following points:

1. Spray "Zaofa No.1" with 3 ml plus 0.6 kg of water for every 10 square meters of seedling bed, and spray it again after 8-10 days to prevent tall seedlings and cultivate strong seedlings.

2. After finishing the seedlings, choose sunny weather and dry the bed to disperse dampness and spray medicine to prevent disease at the same time.

3. For a small number of dry and stiff cotton seedlings which are short of water and less fertilizer, replenish fertilizer and water in time, ventilate and then uncover film to replenish water before 9 o'clock in the morning, pour with urea and dilute dung water, sprinkle dry fine soil after drying, and then cover with film to keep warm. The method of pumping water to replenish water and keep warm should be adopted for the seedling bed which cannot grow seedlings due to lack of water.

4. Adjust the bed temperature. Before the 2 leaves and 1 heart, the management method of only ventilation without uncovering the film was adopted to keep the heat preservation and promote the growth and speed up the leaf emergence. Ventilation in the morning, close the vents in the afternoon, and keep the bed warm at night.

5. Strengthen the scaffolding, repair the greenhouse film, and enhance the heat preservation effect.

6. And time to fix the seedlings. For the seedling bed with 2 grains in a bowl or "1-2-1" sowing, the seedlings were fixed in time after finishing the seedlings, and the permeability condition in the bed was improved. ⑺ established a seedling bed water system to prevent dryness and flood from turning sharply.

In addition, it is necessary to do a good job of refining seedlings and preparing for planting. 5-7 days before transplanting, cotton seedlings were refined according to the procedure of "first day uncover night cover, gradually uncover film"; cotton after wheat popularized the technique of moving bowls and squatting seedlings, and the time should be 10-15 days before transplanting, and after transplanting, fertilizer, water, soil, film and heat preservation should be added in time to control up and down to prevent stiff seedlings. In case of cold current or overcast and rain during the seedling refining period, it is still necessary to cover the film to prevent injury to the seedling bowl, adhere to the seedling does not leave the bed, the film does not leave the field.