Why the pear tree mealworms weigh

The reason for the weight of pear mealworm mealworm is that the temperature in winter last year was high, and the number of overwintering eggs was large. In addition, some of the fruit farmer Qingyuan did not work well, did not scrape the bark, did not spray 5 Baume degree of lime sulfur, resulting in the occurrence and spread of Tenebrio. According to the survey, the Orchard Tenebrio that occurs when the Qingyuan work is done well and the spear shoots in time and sprays 5 Baume degrees of lime sulfur in time. The second is that during the bagging period, no drugs were given. Tenebrio occurs 10 generations a year, and the pear tree has begun its flowering period. During the bagging period this year, because the pear hibiscus was not serious, some pear orchards did not fight drugs during bagging, causing the mealworms to enter the bag. Whenever a drug was used during bagging, Tenebrio was light. The third is poor spray quality. The tree trunk and trunk of the pear tree is the nest of the tenebrio. Some farmers spray only the leaves and do not spray the tree trunk or tree trunk. This provides a safe haven for the yellow mealworms. When the pear orchards are sprayed carefully, the occurrence of the tenebrio is very light. .
Summing up the experience and lessons learned this year, it reminds farmers that the following points must be made when preventing and controlling Tenebrio in the next year: First, it is time to do a good job. Scrape the bark in time to clean up the diseased branches, diseased fruits, paper bags, and barks in the orchard, deeply buried or burned, and reduce the number of overwintering populations. In the sprouting period of pears, 5 Baumide lime sulfur was sprayed in time. The second is to spray insecticide and bactericide before bagging. If the bagging time exceeds 5-7 days, it is necessary to spray insecticide once, and then bagging. To ensure that everything is safe, the bag should be soaked with 500-fold solution of imidacloprid the day before bagging, and the bag should be air-dried. When bagging, be sure to use iron wire to tighten the bag to prevent Tenebrio from entering the bag. After every 10-15 days, spray the medicine one by one and check the occurrence of the mealworm regularly. The third is to improve the quality of spraying. While spraying leaves, special attention should be paid to spraying trees and trunks to completely eliminate old nests where Tenebrio hides. When spraying, it is necessary to â€œpush the button down, penetrate the inside and outside, make a circle around the tree, beat the tip, and leave no dead endsâ€. When the drug is dispensed, it should be diluted twice, so that the atomizer has good atomization effect and can improve the quality of spraying.

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Posted on June 27, 2023