Step 1: Choose the planting site.
Cotton planting should choose dry land, because cotton peaches can also blossom in dry land, but they can't blossom in wetland.
Step 2: Start planting cotton.
"Jujube seedlings grow long cotton" is the best sowing date of cotton summarized by working people according to the phenological changes in long-term agricultural production practice. At present, cotton planting is generally covered with plastic film, and the ground temperature under plastic film is higher than that in the open field. Therefore, mulched cotton can be sown early (generally about a week earlier than in the open field). In areas with unstable air temperature in spring, it is suitable to sow when the ground temperature of 5cm after the final frost period is stable above 14℃, and the suitable sowing date is April 15-25.
Step 3: Fertilize.
The principle of "sufficient, light, stable, heavy and supplementary" should be mastered in cotton fertilization, that is, applying base fertilizer, early and light seedling fertilizer, stable bud fertilizer, heavy flower and boll fertilizer and patch fertilizer. According to the method of "suitable nitrogen, stable phosphorus, increasing potassium and micro-fertilizer" If cotton wants to obtain high yield, it must be scientifically fertilized according to the weather, land and cotton growth.
Step 4: Trim the branches and leaves.
After plastic pruning, cotton can control its nutritional growth, adjust its nutrient distribution, reduce consumption, promote the development of fruit branches and reproductive organs, and promote its yield increase. Defoliation: Leaves and branches, also known as "beating male branches", grow fast, consume more nutrients, inhibit the growth of fruit branches, affect the development of bud bolls, cause shading of the lower branches of cotton plants, easily breed pests and diseases, and make bud bolls fall off, which should be removed in time.
Step 5: Control pests and diseases.
Choose cotton seeds with full seeds, high germination rate, strong germination potential and good maturity as seeds. Removing pathogenic bacteria from cottonseed surface with sulfuric acid and drying for 30 ~ 60 can improve the germination rate and germination potential of seeds and enhance the disease resistance of cotton seedlings.
Strengthen on-site management. Fine ground preparation. When about 70% of cotton seedlings are dug up, they should be ploughed and loosened, and sown properly in the morning to reduce soil moisture, raise ground temperature and cultivate strong seedlings. Build seedlings in time, and focus on destroying sick and dead seedlings.