1. Morphology and habits The adult body is about 20mm in length, light green or yellowish-brown, spindle-shaped, forebris leathery, light green and transparent. The nymph body is small and has no wings. Around three generations a year, the egg masses overwinter in the soil, and both adults and nymphs bite on the leaves, causing holes and nicks. In severe cases, the leaves can be eaten out, like in areas where the plants are lush and have high humidity.
2. Control methods can be captured manually; in the winter, the soil is deeply poured or disinfected with pesticides to reduce the eggs; 50% of the pine oil is used to kill 1000 times, 90% of the original drug is trichlorfon 800 times, or 80% of the dichlorvos EC is 100 times. liquid.
Scarab
1. Morphology and habits The adult body is about 1.5 centimeters long. The back of the head and chest is golden yellow, the abdomen is yellow-brown on the back, the inner half of the forewing is yellow, the outer half is brown, and the hind wings are yellowish brown. The larvae are yellow-green and have dumbbell purple markings on the back. Yellow thorns occur one or two times a year, and the mature larvae overwinter on the affected branches and cause larvae to feed. In severe cases, leaves eat, leaving only petiole and veins.
2, prevention and control methods (1) lighting trap adult. (2) Manually remove the overwhelming insects. (3) Spray 80% dichlorvos EC 1000 times, or 25% imidothiophosphate EC 1000 times, or 2.5% bromocyanoester EC 4000 times in the early stage larvae.
Chafer
1. Morphology and habits The body is oval or long ellipsoid, and the elytra is more glossy, and the adult is mainly harmful at night. With phototaxis, the affected parts are mostly leaves and flowers. In severe cases, the leaves and flowers can be eaten. The larvae of the golden turtle are called cockroaches and are one of the main pests that harm the roots of the seedlings. The chafers occur one generation a year, and the larvae overwinter in the soil.
2. Control methods (1) Use black light to trap adult insects. (2) The use of adult feign death can be used to manually kill adults at dusk. (3) spraying 40% omethoate EC 1000 times, or 90% trichlorfon 800 times.
Coffee moth
1. Morphology and living habits Adult insects are grayish white and 15-28mm long. Antennae black, filiform, three pairs of blue blue spots on the back of the chest, grayish white wings, translucent. The larvae are red-brown and their heads are light brown. One to two generations a year, wintering in branches as larvae. The damage to the larvae into the stems caused the shoots to die, the plants could not grow normally, or the stems were hollowed out and broken.
2. Control methods (1) Cut off the damaged twigs and burn the dead branches together. (2) Insert the iron wire into the wormhole, hook it out or hedge the larvae. (3) Inject 80% dichlorvos or 40% omethoate 100-200 times into the wormholes, and close the wormholes with wet mud. (4) Spray 40% omethoate, or 1000-1500 times 80% dichlorvos EC, or 1000 times 50% killer pine EC.
Rose Bee
1, morphology and habits Adult body length 7-8mm, black wings, translucent, head and chest shiny feet, orange and yellow belly. The larvae are about 20mm long and yellowish green. Rose beetles can occur for two generations a year, with larvae in the soil in winter. There are clusters. Ten constant clusters are fed on the leaves. In severe cases, the leaves can be eaten, leaving only rough veins. The female lays eggs on the branches and leaves the shoots dead.
2. Prevention and control methods (1) Manual removal of leaves (2) Control of alfalfa in winter eliminates overwintering eggs. (3) Spray 80% of dichlorvos EC 1000 times, or 90% of trichlorfon stock 800 times, or 50% of Caesarean Losin 1000-1500 times, or 2.5% of deltamethrin EC 2000-3000 times.
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