Cotton yield over one thousand yuan technical points

Cotton yield over one thousand yuan technical points

1, full-body fertilizer applied to cover the foot.
In the application of fertilizers to grasp the principles of nitrogen stabilization, phosphorus, potassium, fertilizer, and coarse combination. Basal fertilizer should be farm-based fertilizer, Mushi high-quality farmyard fertilizer more than 2500 kg, cake fertilizer more than 50 kilograms, standard phosphate fertilizer about 30 kilograms, appropriate application of potash fertilizer, most of the current planting of transgenic insect-resistant cotton is easy to premature aging late, prone to red stems dry Disease, so the base fertilizer in the application of farmyard manure and appropriate amount of nitrogen and phosphorus fertilizer, based on special attention should be paid to the application of potassium fertilizer, usually Mushi potassium sulfate or potassium chloride 20 kg. On April 10th, ridge coating was carried out to improve the ground temperature.
2, timely sowing
Around April 20-25, holes are sown on the film, sowing depth is 3 cm, difficulty in seedling emergence is too deep, weak seedlings are formed, and they are too light, easy to dry, or uncovered, with 3-5 capsules per hole, 25 cm spacing, on demand. The per mu seeding rate is about 1.25 kg, and the machine broadcasts about 1.5 kg per mu.
3, timely management of field management, prompt seedlings early-onset, three-leaf period Dingmiao, pay attention to the removal of isolated strains. Seedling 2-3 cultivators during the seedling period to facilitate warming and conservation. After the cotton enters the initial flowering stage, it reapplies the early flowering fertilizer. Generally, 15-20 kg of urea is recovered per mu. After top dressing, timely watering and chemical control should be performed according to weather conditions and cotton growth.
The focus of pruning is to hit the top and tip. According to the principle of “When the time is not the same, when the branch is not equal,” the scores will be scored on the 15th to the 20th of July. The number of single branches will be 12-14, and the scores will be scored on August 5-15. , And promptly remove the vegetative shoots and erase the buds.
4. Insect pest control The insect-resistant cotton is not absolutely chemically controlled without drugs, but depending on the species and occurrence of insects, insecticides are used to prevent harm.
Prevention and control strategies should adhere to the principles of seedling locusts, cotton leafhoppers and "Fuxi", whiteflies, and the key to both the treatment of cotton aphids and other pests. In the year of the occurrence of H. armigera, the second generation can be used without drugs, and three or four generations should be combined to prevent and cure “Fuxi”, cotton leafhoppers and whiteflies to treat 1-2 times; in the occurrence year of cotton bollworm, the second generation of cotton bollworm should be properly applied. Drug control, focus on the protection of cotton growth points; three and four generations of cotton bollworm should pay attention to pesticide control, focus on the protection of Lei Ling.

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