There are five ways to prevent cotton rotten bells
2018-10-17 18:02:32
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. For this purpose, the following measures are used to prevent and control cotton rotten bell rotten peaches: The pest control and rotting prevention is mainly to prevent and control cotton bollworm and red bollworm, and the first is to plant the hybrid insect-resistant cotton varieties; secondly, during the occurrence of cotton and red bollworms, timely attention is paid. Insect and pest intelligence, prevention and control, minimize pest damage. 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.
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