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How to prevent orchard scarab
Chafer is an important class of pests that injure apple trees. Its species are numerous, some eat flowers and tender shoots, some eat leaves, and some harm fruits, and their larvae damage the roots. Adults often migrate into orchards in groups during the seasons. Populations are in serious condition and buds, flowers, and leaves can be grazing. The beetles that take on buds and flowers include apple hair beetle, black cashmere beetle, brown cashew beetle, small blue beetle, and brown beetle. These beetles all live in the soil for winter. The unearthed period is from late March to early April. In mid-April, it is a prosperous period. The period of occurrence of damage is apple budding period to flowering period. It concentrates on damaging flower buds, flowers and young shoots, giving flowering fruit set and tree growth to fruit trees. It poses a great threat, especially on hillside, floodplain and fruit trees along the highway. The beetle is mainly damaged in the evening and night. It has a pseudo-dead, hard body, and is not easy to control. How can we improve its control effect? The following control measures can be used. 1. Pharmaceutical treatment In mid-April, the use of 50% of organic phosphorus pesticides such as 50% monocrotophos or 50% phosphoramide to spray the soil on the tree tray in the middle of the excavated period of the beetle will kill a large number of unearthed adults. This is a key prevention measure. 2, spraying the apple tree budding period with 20% of the sweep profit or 2.5% kung fu 2000 times or 20% fasting 1000 times the liquid in the evening spray tree and tree tray soil, control effectiveness in more than 90%. 3, artificially kill the use of chameleon's pseudo-dead, in the evening, first in the tree plate under a plastic cloth, and then shake the branches, and then quickly fall on the plastic cloth chafers collected, culled or fed chicken, low cost and good effect. 4. Poplar seduce the leaves with a length of about 60 cm with a small stick of about 10 cm in diameter from one end and immersed in 50% phoxim or 90% dipterex 100 times for 2-3 hours. , Hanging on a wooden stick of 1.5 meters in length, scattered in the evening around the orchard and between fruit trees, the use of the characteristics of the beetle to eat poplar leaves to seduce, has a good control effect. 5, rational fertilization does not apply unripe farmyard fertilizer, to prevent the beetle spawning or unfamiliar fertilizer with 1605 and other organophosphorus pesticides treatment, ommatization, cockroach, insecticide. 6. The light trapping of copper-green beetles has a strong phototaxis. In a conditional orchard, a black light or 60-watt light bulb can be installed in the park. A water basin or water tank can be placed under the light to make the trapped chafer fall off. In the eternal culling. 7, chemotaxis and killing can be set in the orchard sweet and sour solution (5 brown sugar, 20 parts of vinegar, water, 80 copies) traps, trapping and killing, cover during rain, so as not to affect the trapping effects of rain falling into the basin.