Peach fruit borer (referred to as peach small), is Lepidoptera, fruit fly Muscidae. In addition to harming apples and pears, it also harms hawthorn, peach, plum and apricot. First, the damage to the characteristics of apples, pears serious. Injuries such as apples and other fruits, larvae and more from the fruit pods into the pod hole out of tear-shaped pectin, commonly known as "drop tears", soon after the dry waxy white waxy powder, puncture healing healed ...... small black spots slightly concave. Larvae often reach fruit and fruit, and in the flesh in the string, defecation in the tunnel, commonly known as "red bean paste", not fully inflated young fruit victims are mostly rugged, commonly known as "herophrodite". Peach, hawthorn, etc. eat more fruit around the core, defecate in it. The quality of the damaged fruit was reduced, and some fell off. Severe people were unable to eat and lost economic value. Second, one-year living habits. Seasoning of mature larvae in the piles and orchard soils. The winter larvae sleep more than six months in the quail, and in the middle of June of the second year, the oyster shells were gradually unearthed. After the larvae are unearthed, they crawl on the ground and look for tree trunks, stones, clods, grass roots, and other crevices. After about 15 days, it has become adult. Generally in mid-to late-June, the emergence of feathers, in mid-July for the feudal period until the end of mid-August. Adults often fly at night, do not fly far, and often stop at the fruit tree branches and orchard weeds in the shade, and spawn 2 to 3 days after emergence. Eggs are produced in the rough parts of the pods, stems, and pericarp of the fruit, and are laid down on the back of the leaves, on fruit pedicels, buds, and pedicels. The eggs are hatched as larvae for 7 to 10 days. The larvae crawl on the fruit surface. After finding the proper parts, they bite the peel into the fruit. The larvae in the fruit after about 20 days, bite a flat back hole out of the fruit, fell into the soil for the winter. Generally more than 0.6m around the trunk overwintering, but the mountain orchards because of the complex terrain, more weeds, the distribution of overwintering is not as flat as the concentration. P. musulae has a large amount of variation over the past years. Excesses of winter larvae, pupae, adult emergence, and spawning require higher humidity. If the soil needs to be moist when the larvae are unearthed, the larvae are almost completely unearthed when it is dry and dry, so the amount of insects that emerge after rain increases. Adult oviposits require high humidity, spawning in high humidity conditions, and low wet eggs spawning, sometimes as much as tens of times, and light in drought years. Third, prevention and control methods For this pest control to obtain the best results, the key is to do a good job of monitoring, take the prevention and control of the main tree, tree supplemented by prevention and control, combined with artificial and chemical control strategies. 1, the ground sprinkler to control larvae and cockroaches. In the middle of June to mid-July, each application of a time, each with 25% phoxim capsules or 50% phoxim EC 0.8 ~ 1kg, add water 50 ~ 90 times evenly sprayed under the canopy or water 5 times mixed 300 times fine soil made of toxic soil, sprinkled under the canopy, timely application of soil after application to prevent photolysis, can achieve good results. Especially in the larvae during the excavation, in case of days after the rain falling rain 2 to 3 days, the effect is particularly good. 2, the appropriate spray on the tree. Guan Jian lies in grasping the procreation period of large feathers and timely spraying. Generally in the late July to early August each spray 1, such as the prolonged spawning period, scattered, or rain after spraying, but also need to increase one spray. Use 2.5% Kung Fu EC 2500-3000 language solution or 2.5% enemy-killed EC 3000-4000 solution and other pyrethroids to spray evenly. 3. Pay attention to the overwintering sites of Prunus persicae, such as fruiting areas.
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