Recently, some readers have reported that the occurrence of dried beetles in orchards is more common, jeopardizing fruit trees and branches. In order to solve the problem of the overflow of the beetle, the reporter interviewed the associate professor Kang Kegong of the Department of Agronomy, Yangling Vocational and Technical College, and listened to how he made great coups for the majority of fruit farmers.
Master the law of harm
According to Kang Kegong, among the branches of the beetle, the mulberry and the red-necked beetle occur in fruit trees, especially the older apple trees have a higher probability of occurrence. In Liquan County, Shaanxi Province, the probability of occurrence of fruit trees is as high as 80%. This kind of beetle mainly harms the woody part of the trunk.
"Tianniu will stay on the trunk all year round. In July and August of each year, the beetles will be drilled from the trunk, mating and spawning in late August, and a bite on the branches when spawning. The pit. The place where the pit is biting is red, the egg hatches into an insect in September, and then the bark is eaten, and the red juice is flowed out to the place where it was eaten. This is obvious when it is observed," Kang Kegong said.
Scientific prevention
“The best period of prevention and treatment is from August to November of the first year. At this time, 1 part of Rosburn (also known as chlorpyrifos) plus 30 parts of diesel oil brush on the bark, infiltrating the bark to kill The role of the hornbills. The stems of the hornbill will drill into the wood in April of the second year. When they see the snails pushing the wood chips outside the trunk, they have already missed the best period of prevention and control. There is no good way. It can be controlled.†Kang Kegong introduced that this method of controlling diesel oil is effective, but it requires a lot of manpower. This method is recommended in the case of the development of Tianniu.
If the beetle is heavily flooded, the insecticide can be smoked. In the process of smoking, there are two time periods to choose from: First, after the heavy rain in July and August each year. At this time, the worms will come out to mate and lay eggs, and they can be smoked with insecticides to kill the adults and prevent them from laying eggs. At the same time, there is rain on the ground after the heavy rain. At this time, the ground is cold and the canopy is hot. At this time, the smoke can make the smoke just in the canopy layer, which will kill the beetle well. Second, in the evening of July and August, there was a wind blowing, the ground became cold, and the canopy layer blocked the wind. At this time, if the smoked smoke would make the insecticide in the canopy, it would kill very well. The effect of destroying the beetle, especially in the orchard on the slope, is better. Experts remind the majority of fruit farmers friends, no matter which method is used, we must pay attention to anti-virus work in advance.
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