Also known as fennel, it belongs to Lepidoptera and Papilionidae. Larvae is harmful to plants. Larvae eat leaves at night, causing nicks, and when it is serious, eat them up. Only petioles and veins are left.

Prevention and cure method

Artificial killing, pay close attention to artificial killing in the early stage of larval occurrence and before the third instar. You can also use 90% trichlorfon 1000 times solution every week 1 time, 2 ~ 3 times in a row.

(2) Seed flies

Also known as ground maggot, it belongs to Diptera anthomyiidae. Damage to larvae, erosion of roots. When Angelica sinensis emerges, it burrows into the roots near the ground to eat, eating away at the roots, leading to rot and plant death.

Prevention and cure method

It is necessary to apply decomposed organic fertilizer and cover it with soil after application to reduce the spawning of fly species. It can also trap and kill adults through their preference for sweet and sour taste and fermented taste. That is, 2 parts of vinegar, 5 parts of brown sugar 2, 5 parts of water and a small amount of 90% trichlorfon were mixed, put into a plate and placed in the field for trapping and killing. In addition, 90% trichlorfon 1000 times solution or 80% dichlorvos-2,000 times solution was used to irrigate the roots, once a week/kloc-0 times, 2 ~ 3 times in a row.

(3) Native tiger

There are mainly little tigers and yellow tigers. Larvae damage, night out, bite off the roots, resulting in lack of seedlings.

Prevention and cure method

Because black cutworm mostly occurs in low-lying areas where weeds are overgrown and prone to waterlogging, it is necessary to improve drainage conditions, remove weeds in the fields and reduce the transit hosts of black cutworm. Set sweet and sour wine in the field to trap and kill adults. 50% phoxim EC 1000 times solution and 2.5% deltamethrin 1000 times solution can also be applied to the rhizosphere of seedlings, which has good control effect on many kinds of cutworms.