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| What are the natural enemies of licorice pests? |
| Publisher: admin Release time: 2009/4/20 18:09:05 Read: Times |
The natural enemies of licorice pests are:
(1) Grasshoppers Grasshoppers are natural enemies that are common in production areas and have strong ability to control pests. Care should be taken to protect them. Commonly, there are 4 to 5 species, such as Chinese grasshopper, big grasshopper, and sedge grass. It has strong predation ability against aphids, leafhoppers, blind nymphs, leaf beetles and larvae, lepidopteran pest eggs, larvae, pupae eggs, nymphs and other pests. This insect has the characteristics of entering the licorice field early and exiting late. It has a large number from June to August and has a long time to control pests. When applying pesticides to control pests, it is necessary to pay attention to the protection of grasshoppers and the density of grasshoppers. The benefit and harm ratio is 1 : 2 OO aphids, 1:80 leafhoppers can be exempted or delayed.
(2) The hunting falcons are mainly dry hunting falcons, narrow falcon falcons, gray falcon falcons, and Chinese falcon falcons. They are distributed in all licorice production areas, and can be seen in the field from May to September, and from June to August. The number is large. Generally there are 6 to 10 insects per 100 plants. The difference between different licorice fields is not large, and the annual change is small. It has predation ability on aphids, leafhoppers, spider mites, thrips, blind nymphs, lepidopteran pest eggs, larvae, etc. at various stages of licorice, and has a strong ability to inhibit the occurrence of leafhoppers and spider mites.
(3) Ladybugs There are several species of ladybugs, heterochromatic ladybugs and ladybugs. In the desert steppe area, it appears every year from June to August. Seven-star ladybirds are concentrated from mid-June to early July, mid-July, and heterogeneous ladybugs are from late June to late July. When the density is high, the number of insect populations is 100 to 2. Two heads, which have a certain ability to suppress the eggs and larvae of aphids, leafhoppers, thrips and other pests at this stage.
(4) Tiger beetles are mainly curved tiger beetles. The worm is nocturnal. It is not easy to find in the field during the day, and it is easy to find a large number of worms by netting or light trapping at night. The adult larvae of the tiger beetle mostly live on the surface, so they have certain control ability on the Ningxia pupae adults, ground tigers, and mimics. Adults can also eat licorice stem and leaf pests.
(5) There are many kinds of hornet bee, hornet bee, and larva of the silkworm. It is parasitic on eggs, larvae and pupae of pests such as Lepidoptera, Coleoptera, Hymenoptera, etc. It is particularly strong against larvae of Lepidoptera. Pest control is great.
(6) Aphid-eating flies are commonly found in several species, such as the large gray fly, the thorny leg fly, the black-banded fly and the concave-band fly. They are widely distributed and can be seen throughout the year. The predators are aphids and scale insects. , Whiteflies, leafhoppers, thrips and other small lepidopteran larvae. Has a certain control effect on pests.
(7) Step armor There are mainly yellow scabbard step armor, cone-bearded step armor, and valley step armor.
(8) Other insects There are various insectivorous maggots such as Jeonbuk brown magpie, ant-shaped beetle, and one-maned magpie magpie.
(9) Spider belongs to the arachnid and arachnid, and is an important group in the natural enemy system. It can prey on various insects such as leafhopper, leaf beetle, blind cricket, lepidoptera, larva and so on.
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