In late August, cotton enters the boll opening stage and often suffers from rotten bolls. In general, the rotten boll rate of the plots reaches 10%-15%, and severe plots exceed 30%, often resulting in reduced cotton production and reduced quality. To this end, the following five methods are used to prevent and cure cotton rotten bellows:
Prevention of pests and rotten: Mainly to prevent and control cotton bollworm and red bollworm, one is to plant hybrid insect-resistant cotton varieties; the second is during the occurrence of cotton, red bollworm, timely attention to pest information, prevention and control, to minimize the loss of pests .
Humidity protection against rotten: The four ditch in the cotton field is not smooth, and the humidity in the field is large, resulting in more rotten bells. Therefore, it is necessary to clean up the four ditch in time so that the ditch can communicate with each other to eliminate water.
Ventilation and protection against light and rotting: First of all, we must strictly control the amount of nitrogen fertilizer, nitrogen fertilizer is too much, can easily cause the cotton plant crazy growth, the amount is too small, it can not effectively promote the growth of cotton plants and improve ventilation and light transmission conditions. Second, we must do a good job of chemical regulation, which is conducive to ventilation and light transmission. In addition, timely and appropriate hit empty branches, old leaves, etc., can directly improve the ventilation and light conditions in the lower part of the cotton plant, reducing the rotten bell rotten peach in the lower part.
Treatment of rotten: In the flowering and bolling period, spraying 600 times of carbendazim solution can effectively prevent boll diseases, directly kill bacteria, and reduce rotting.
Robbing pick and rotten: For those who have already suffered or are about to suffer rotten boll, pick it up in time to take the cotton boll of the germ out of the field and reduce the pathogen. At the same time, peeling, drying, and harvesting the rotten bells in time can reduce the output loss of rotten bells and increase the income within the flowers.
Skull Clamp,Neurosurgery Accessories,Operating Table Skull Clamp,Operating Bed Skull Clamp
NINGBO TECHART MEDICAL EQUIPMENT CO.,LTD , https://www.techartmed.com