Cherry is a common fruit in life. In the process of cherry planting, some insect pests will inevitably appear. If it is not controlled, it will seriously affect the yield and commerciality of cherry. This article will introduce the pesticide selection method to prevent cherry pests.
First, the red neck beetle
1. Hazard symptoms: The larvae eat and dry branches. They first stalk the food under the cortex, then break into the xylem and go deep into the center of the trunk. The woody debris is accumulated outside the pupil, causing the glue to flow. In severe cases, the big branches and even the whole plant die.
2, prevention and treatment methods: Adults from the end of June to mid-July at noon, more on the trunk, can be artificially killed; in June before the adult hatching, spray the coating on the branches (sulphur 1 + quicklime 10 copies) + 40 parts of water) to prevent adult eggs from laying eggs; in the larval hazard period, when fresh manure is found to drain the pupil, the small cotton ball soaked in 80% dichlorvos EC 200 times, clamped with a pointed tweezers The pupil is sealed with a yellow mud, and the larvae in the hole are killed by the fumigation effect of the medicament.
Second, Jinyuan Ji Bing
1. Hazard symptoms: The larvae plunged into the trunk cortex and stalked. The bark of the saplings is darkened by the bark of the insects, and the symptoms of the big tree worms are not obvious. As the tree's transport organization is destroyed, the tree is weakened and the branches die.
2, prevention and treatment methods: strengthen management, to avoid wounds, the tree is strong and can reduce the damage. Adults are sprayed with 80% dichlorvos EC 1000 times solution, or 90% crystal trichlorfon 200 times solution, or scraped old bark to eliminate eggs and larvae; when the surface of the branches is necrotic or glued, check the insects, use 80 % of dichlorvos emulsifiable concentrate 500 times liquid is injected into the insect tract, killing larvae, or using black light to trap adult worms.
Third, apple winged moth
1. Hazard symptoms: larvae feed on the trunk cortex. The ramp is filled with auburn liquid, and the terrarium is filled with tiny brown feces, causing the tree to flow and the tree is weak.
2, prevention and treatment methods: when seeing the main worm discharge and èµ¤çº¢æ± outflow, manually excavate the larvae; use 50% dichlorvos emulsifiable concentrate 10 times before the germination to spread the worms, killing the larvae that submerged under the skin; During the emergence period (June-July), spray 80% dichlorvos EC-800-1000 times solution, and spray again 1 day after 15 days to eliminate adult and newly hatched larvae.
Fourth, chafers
1. Hazard symptoms: There are mainly trichaetes, patina, and black velvet chafers. With suspended animation and phototaxis. It is harmful to organs such as twigs, buds, young leaves and flowers.
2, prevention and treatment methods: in the adult period (early mid-April - early May, mid-June), using its suspended animation, morning treetops, killing adults, or using 50% carbaryl WP 1000 times Or 20% anti-sweeping emulsifier 1500-2000 times liquid spray control, have better control effect, or use black light to trap and kill in the evening.
Five, mulberry
1. Harmful symptoms: Harmful fruit trees such as cherry, plum and apricot. Adults and nymphs suck on the trunk, causing the branches to wither and even the whole tree to die.
2, prevention and treatment methods: in the winter scrape the old bark, eliminate the winter insects; use clay diesel emulsion to coat the trunk (diesel 1 + fine clay 1 + water 2, mixed), sticky insects; Before the germination of the tree, the sprayed beauty 5° stone sulphur mixture; before the hatching nymphs of each generation have not formed a shell (mid-May, mid-July, mid-September), spray Baume 0.3 ° stone sulfur mixture, or spray 20% Kill the chrysanthemum EC 3000 times solution, or 20% to eliminate the 2000 times solution.
Six, boat-shaped caterpillar
1. Hazard symptoms: The larvae are clustered, eating the back of the leaves first, and then the group is dispersed, eating the leaves, leaving only the main veins and petioles. It is an omnivorous insect.
2, prevention and treatment methods: combined with autumn turn, spring planing tree tray, let the winter scorpion exposed to the ground, died by the wind and sun lost water, or for birds to eat; use 3 years old (August, mid-August) cluster The habit of shaking and drooping, artificially removing the branches and leaves of the cluster; spraying 50% dichlorvos EC 1000 times liquid or 20% speed killing 2000 times liquid for chemical control during the larval damage period, or spraying the red worm or the bacillus Containing 10 billion per gram of spores) 800-1000 times liquid for biological control.
Seven, Daqingye
1. Harmful symptoms: The larva sucks the sap of the branches and leaves, causing the leaves to turn yellow, premature defoliation, and weaken the tree; the adults lay eggs in the bark of the branches, causing damage to the branches, increasing the evaporation of water, affecting the safety of wintering, causing pumping Strip or frost damage.
2, prevention and control methods: remove weeds in orchards and nurseries; spray 80% dichlorvos EC 1000 times liquid from September to October to kill nymphs and adults.
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