Reapply Hua-Bing fertilizer to provide additional nutrients, making it easier to manage the cotton crop later. When mulching, remove the plastic film during the flowering stage and immediately apply top-dressing fertilizer. During dry periods, ensure proper irrigation. For cotton grown under plastic film or transplanted in nurseries, reapply early flowering fertilizer (flower-heavy fertilization), which should account for about half of the total top-dressing amount. For live cotton, reapply full bloom fertilizer (peach-heavy fertilization). Early spring cotton grows quickly, so to prevent premature aging, apply a top-dressing fertilizer approximately 10 days after applying the flower bell fertilizer. Use about 5 kilograms of urea per mu.
If drought occurs, the cotton will enter the flowering stage but will not be drought-resistant. Drought can lead to a significant loss of buds. The soil moisture level in the cotton field should ideally be between 20-40 cm, and when it falls below 60% of the field's water capacity, irrigation is necessary. Watering should be done at a rate of 30-40 cubic meters per mu to maintain adequate moisture levels.
During the boll-forming period, the high temperature and rainy season can cause soil compaction in the cotton field. Timely cultivation helps loosen the soil and promotes root activity. The depth of cultivation should not be too deep—ideally around 6 to 7 cm to avoid damaging the roots.
Properly control the growth of the cotton field. During the early flowering stage, spray 2 grams of methamidophos or 25% of the helper factor at 8 ml per mu. During full flowering, use 3 grams of salicylamine or 25% of the helper factor at 12 ml per mu to ensure steady plant development and prevent excessive vegetative growth.
Timely topping is essential for high-yield cotton fields. Top the plants between July 15th and 20th. For late-developing or vigorously growing cotton, top them before July 25th. Topping too early may result in fewer effective branches and axillary bud clusters, leading to overly long fruiting branches that hinder air circulation and bud retention. If topped too late, it can cause empty upper branches and lower buds to drop, which negatively affects yield and quality.
During the flowering and boll formation stages, common pests include Fuxi and the third generation of Helicoverpa armigera. The infestation rate of Fuxi can reach up to 5%, and the resistance of cotton bollworms to certain insecticides may be as high as 5% among newly hatched larvae. Regular monitoring and timely pest control are crucial to protect the crop and ensure a successful harvest.
Digital Sensor And X-Ray Units
Digital Sensor And X-Ray Units,Dental Radiographic Device,Dental Radiographic Equipment,Dental Radiography Device
Rolence Enterprise Inc. , https://www.rolencedent.com