5 methods to prevent apple giardia
Quarantine of Seedlings: It is a quarantine object for the apple pudding, which can be transmitted to the new area with seedlings. Therefore, the quarantine work should be strictly strengthened when the nursery is out of the nursery to prevent transmission.
Protecting natural enemies: In the mature larvae and pupal stage, the apple pudding is found in two species of parasitoids and a parasitic fly. In the orchards that do not spray often, the parasitic rate can reach 36%. In autumn and winter, about 30% of larvae and cockroaches are eaten by woodpeckers.
Artificial prevention and control: the use of adult false feces, artificial capture of the landing of the adult; clear dead trees, cut off the insect tip, concentrated burning before the phlegm; artificial worms, winter and spring season, the old skin scraped insects, with a knife The subcortical larvae were excavated and then coated with 5 degree lime sulfur.
Applicator pest control: When the larvae are damaged in the shallow layer, they should be checked repeatedly and found that the trunk is damaged. Brush it with a brush on it. Elixir can be used 80% of dichlorvos EC 10 times; 80% dichlorvos EC diluted with kerosene 20 times.
Spraying and killing adult worms: In the serious orchards of puddings, larvae alone cannot control the larvae completely. It is necessary to control the larvae on the basis of the larvae, and spray them continuously during the period of adult emergence, such as: 20% killing. Chrysanthemum EC 2000 times, 90% Trichlorfon 1500 times and so on. When it is found that the epidermis of over 2 years of age has an insect path that is damaged by gizardia, the epidermis of the fruit tree should be lightly stroked with a knife and then smeared with a mixture of 4 times omethoate and dichlorvos at any time. The severed and nearly dead branches are cut off to reduce the source of insects.
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