Cotton Bolling Period Manages Good Yields

The boll opening period refers to a period of time from when the cotton boils through to the end of flower collection. Before this year's cotton boll opening, most of the cotton areas had more rain, resulting in some cotton fields appearing lodging and ringing. Production should focus on the following points:

1. Grab the rotten bell. Cotton bolls with dark spots on the lower part of the body can be harvested by drying with a 1% ethephon solution and drying.

2. Excrete. If the soil moisture content caused by rainfall and the humidity in the cotton field are too large, it is also unfavorable for mature bolls.

3. Pruning. During the boll opening period, we still need to continue pruning, including playing old leaves, cutting empty branches, and playing around the heart. In particular, cotton fields that are more prosperous in late growth and later mature in glutinous green crops should undergo a thorough and detailed pruning so as to promote the supply of concentrated bolls to the bolls and reduce the number of rotten bells.

4. Push the strains in parallel. The cotton fields that thrive in growth, late in lust, and heavier in the intertwined plants should be pushed in parallel, and should be carried out again 6-7 days later. Repeatedly several times, the effect of ventilation, light transmission, and warming and dehumidification can be achieved, thereby reducing rotten bells and promoting maturation.

5. Top dressing. When the cotton plant has defertilizer such as phosphorus deficiency and potassium decline performance, general mu with 0.5% superphosphate solution and 1% urea solution 50 kg spray. For boron-deficient cotton fields, mu is sprayed with 50 kg of 0.2% borax solution. Foliage dressing is best done in the sunny afternoon.

6. Remove the buds. Late buds are mostly invalid peaches and should be removed in time. Conditions can be used with chemical control technology. In general, spraying 3-4 grams of shrinkage on the mu, and on the future, the cotton field can grow to more than 5 grams to increase the effect of removing artificial buds.

7. Disease prevention and pest control. After the cotton boll opening period, there were many sudden diseases and insect pests. There were mainly four generations of cotton bollworms, which mainly attacked summer cotton and late-maturing cotton. The death of blind stink bugs lasted until early October; the bridge-building insects and beet armyworm were emergent pests. The above pests should be promptly inspected to seize the hatching period for prevention and control. Before the third instar, the main pesticides are Lethbene, Acetoin, malathion, acephate, etc.; Red spiders, thrips, etc. should be promptly controlled. Disease is mainly caused by the bell blight and other rotten bells, effective agent is mancozeb.

8. Chemical ripening. Ecteamic ripening was applied to late bolls. About 15 to 20 days before defrosting, or about 10 days before cotton ploughing, the boll period of most cotton bolls at the top and periphery of cotton plants has reached 40-45 days, and 40% ethephon is used in 150-200 grams of mu, plus 50 kg of water. Spraying on cotton bolls can make the cotton mature in 7-10 days in advance, and increase the frost before flowering by 10%-20%.

9. Pick off the sliver in time. After 7 days of cotton cracking, the best fiber quality, so the best 7-10 days picking, when picking mature cotton, we must split the dead petals, cotton and peach, such as splitting, split drying, points Save, avoid mixing and mixing.

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