Medicinal Plant Pest Aphids

Scientific name Aphis sp. It belongs to the order Homoptera, Aphididae. Distributed throughout the country.

Host 枸杞.

The damage is an important pest in our country's production. The sap and sap sap from the clusters of Cheng and Ruojiao, the bases of the buds and the backs of the leaves, seriously affect the flowering results and growth and development of the alfalfa. It is one of the three major pests on the alfalfa.

The morphological characteristics of adult worms were 1.9mm long and greenish yellow. Black head, eye tumor is not obvious. The tentacles are 6 knots, yellow, brown and brown in the first and second sections, and the sixth section ends in the base with a full length, chest, and length. The chest is narrow and long, wide, and the chest is wide and black. Light yellow-brown, dark color at the end of leg and tarsal joints and ganglion. The abdomen is tan, and the abdomen is black cylindrical with two sets of bristles on each side of the abdomen ending. The non-wing-bearing carcass is more hypertrophic than the winged pupae, the color is light yellow, and the tail piece is also light yellow, with two to three sides on each side. bristle. (right)

Life habits are unclear on an annual basis. Wintering on the branches with eggs. After starting to sprout in April north of the Great Wall, it began to incur damage. In May, it burst into full bloom. Numerous adult nymphs clustered on young shoots and damaged young buds. They entered the larvae of the summer and fell, and they resumed after falling into autumn. The second peak appeared in September. . Nitrogen fertilizer is excessively applied in production, and the growth is excessive and the victim is heavy. The main natural enemies include ladybugs, grasshoppers, and food flies.

Prevention methods (1) Strengthen the management of gardens, adopt formula fertilization techniques, prohibit over-application of nitrogen fertilizer, and reasonably water. (2) protect and utilize natural enemies; (2) forecast and forecast locusts, pay close attention to the number of larvae, and immediately spray 50% anti-inflamy WP 2000 times or 40% dimethoate 10 ow Mixed spray can also be used alone with 35% ovary net emulsifiable concentrate or 10% adipendrone wettable powder 1500 times or 35% endosulfan cream 1000 times more effective. Locusts are susceptible to drug resistance and attention should be paid to alternating and rotating medications.

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