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First, grasping the ground control is the key. The larvae of the mature larvae in the ground around the base of a meter away from the dry base, soil depth 0-14 cm (0-4 cm up) in the winter dow winter, next spring will be gradually unearthed. In view of this, the following two measures can be used to prevent and control:
1, combined with winter fertilization, the tree plate 10 cm of soil turned into the bottom of fertilization, raw soil sprinkled on the surface, can be buried deep in overwintering larvae.
2, when the soil is frozen, the entire tree plate, irrigation water, reduce the oxygen content of the soil, but also can kill most of the overwintering larvae.
3. Prevention and control of overwintering larvae during the prosperous period (this year due to the pre-drought, the overwintering larvae were unearthed by about 15 days in the middle or late July). With the base of the trunk as the center, the radius of 135 centimeters of the ground covered the mulch, and the surrounding area was tight. Unearthed larvae and emerged adults can be eliminated.
4, in the tree under the ground spray 50% phoxim EC 300 times, the control effect is not bad.
Second, we must seize the control of overwintering adults. There is no obvious phototaxis and chemotaxis for adult overwintering, and a very strong tendency for Peach Sex attractant. It can be hung 1-2 days before adult emergence (this year's adult emergence should be in the mid-August). Peach sex attractant. Pass the peach pellets through the wire, place it horizontally and fasten it on a bowl, pot, or can. The container contains water containing a small amount of washing powder, which is 1 centimeters high and hung 1.5 meters above the ground. The crown of the tree, pay attention to add water at any time. Every 30 meters is set to effectively trap male adults.
Third, grasp the first generation of egg control. Because the young peach larvae will invade into the fruit within a short period of time, and when the skin is bitten, it will not be swallowed. The stomach killer is not effective against the worm, so the egg phase prevention and control is almost the last one. turn off. In the orchard where peaches are seriously damaged, they should be applied 4-5 days before the adult's spawning peak and 6-7 days after the spawning peak. The options are: 20% of swampoli 2000-2500 times; or 20% of the chrysanthemum Ester 2000 times; or 40.7% of Le Siben EC 160-240ppm; or 5% Lefluxin EC 16-25ppm; uniform spray canopy, fruit, can get a good control effect.
Peach borer (Peach small) is one of the main fruit pests of deciduous fruit trees. In recent years, serious damage has been caused to apples, peaches, pears, dates, and Other fruit trees. The pest's larvae feed on the fruits, reach the fruit heart directly, and the insect excrement does not drain out. The fruit is full of ramps and forms a "red bean paste", which seriously affects the yield and quality of the fruit and makes it lose its food value. This spring, due to less drought in May and June, it caused the overwintering larvae to be unearthed and postponed. It hopes to attract the attention of the majority of farmers and timely control. Based on their living habits, we have summed up some effective prevention and control methods for your reference on the basis of many years of practice.