Peach borer is also known as Peach Moth, Peach Moth, Peach Moth, Peach Moth, and Peach, belonging to Insecta, Lepidoptera, Pteropidae. Harmful to apples, pears, jellyfish, bonuses, cherries, X, K, papaya, jujube, peach, plum, apricot, hawthorn, and wild jujube. In orchards without bagging, victimization is often more serious.
The characteristics of damage: The deformed fruit shape, the insects inside the fruit, and filled with a large number of insect feces, completely lost the value of food products.
Morphological characteristics Female body length 7 ~ 8mm, wingspan 16 ~ 18mm; male body length 5 ~ 6mm, wing exhibition 13 ~ 15mm, the whole white gray to grayish brown, compound eye red-brown. The female's lips tend to stretch forward; the male's lips are short and upward. Near the front edge of the middle part of the fore wing is an approximately triangular blue-grey patch. There are 7-8 clusters of yellow-brown or blue-brown oblique scales near the base and middle.
The eggs are oval or barrel-shaped. The first eggs are orange-red, with a dark red gradient. The larvae appear black on the top of the hatching eggs. The top of the egg has 2 to 3 circles of "Y" shaped bristles, and the surface of the egg shell has an irregular polygonal mesh sculpture. ?
Larvae body length 13 ~ 16mm, pink, abdomen pale, no buttocks, head yellow-brown, brown and dark brown to dark brown in front of the shield, buttocks plate brown or pink. No buttocks. ?
Its length is 6.5-8.6mm, and it is yellowish white when it is hardened, grayish black when it is nearly feathered, its wings, feet and tentacles are free at its ends, and its walls are smooth and thorn-free. Divided into winter and summer types. Winter cocoons are round, 6 mm in diameter and 2–3 mm long. The cocoon filaments are dense and coated with old dormant larvae. The summer cocoon is spindle-shaped and has a length of 7.8–13 mm. The cocoons are loose, and the corpus callosum is coated, with a feathering hole at one end. Two types of earthworms with clay sand
Life History and Habits Liaoning, Hebei, Shanxi, and Shaanxi had two generations in one year; Shandong, Jiangsu, and Henan had three generations in one year. In Liaoning, the wintering larvae are generally unearthed in the first half of May, and the unearthed period lasts until mid-July, and the peak period is concentrated in June. After being unearthed, it is done on the ground to make summer pods and phlegm, which will last for about half a month. The overwintering adults emerged in early June and lasted until mid-to-late July. The peak period was from late June to early July.
During the daytime, the adults climbed on the backs of trees, weeds and other weeds. After the sunset, they were active. They were active during the first half of the night and came to the end of the night from midnight to 3:00. One to two days after copulation began spawning. Eggs are spawned at the fruit pods. The female lays an average of 44 eggs, up to 110 grains. The egg period is generally 7 to 8 days. The first generation of eggs occurs from mid-June to early August, and the peak period is from late June to mid-July. The newly hatched larvae have a phototaxis effect, and the concentrated fruit surface is crawled to find a suitable site to invade into the fruit. As the fruit grows, the infiltrated hole heals into a small black spot, the fruit face is slightly sunken around the hole, and if the multiple insects damage the fruit, it will develop a malformed fruit that is convex and concave. Larvae in the fruit foraging for 20 to 24 days, after the old, from the inside to bite a large fruit removal hole, and then climb out of the ground, part of the soil into the earth to do the wintering; the other part of the ground concealer phlegm. After 12 days of eclosion, the second generation of spawning occurs in the fruit. The second generation of eggs occurs from late July to mid-September, and the peak period is August and mid-August. After hatching, the larvae infested the fruit for about 25 days, and they emerged from the fruit in late August. In winter, the winter larvae of the larvae were diapause. ?
Control method?
1 Agricultural control: Before the overwintering larvae were unearthed, the roots of the roots of the roots of the tree were split 13 to 16 cm, and the overwintering ridges attached to the epidermis were scraped off. In the first generation of larvae de-fruiting, combined with pressure green manure to press the soil in the tree disk Xia Xia; removal of fruit: During the larvae fruit damage period (before larvae de-fruiting), in the orchard inspection, removal of fruit, and kill the fruit Inner larvae. Picking the fruit once every 10 days can effectively control the amount of this insect.
2 bagging protection: bagging the fruit before adult eggs, the insect in the bagging orchard is no problem.
3 Trapping: Placement of black light in the field or trapping and killing of adults with peach moth-eaten attractants; Covering the mulch: Covering the ground with a mulch within 1m radius around the trunk in the spring, it can control emergence of larvae, emergence of larvae, and adult emergence or excavation. cocoon;
4 Biological control: 60 to 800,000 parasitic nematodes per square meter, with good insecticidal effect;
5 Pharmacy control: commonly used drugs are: 50% killer pine EC with 1000 times; 5% cis-fenvalerate (Laurel) EC, 10% cypermethrin EC, and 2.5% deltamethrin EC are 3000 times; 20% of fenpropathrin (chlorsulfuron) 3,000 times of emulsifiable concentrate, 2.5% of bifenthrin (Uranus) 1500 times of emulsifiable concentrate, cypercanthus 6 and diflubenzuron 3 of 500 to 1000 times. ?
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