First of all, we need to understand: locusts are "grasshoppers", a common name in the world, belonging to Orthoptera, including grasshoppers, grasshoppers, grasshoppers, locusts, distributed throughout the world in the tropics, temperate grasslands and desert areas.

I, the different categories:

Locusts (commonly known as "grasshoppers"): belong to the insect order Orthoptera, locust family. Mainly including flying locusts and earth locusts. In our country, the flying locust has East Asian flying locust, Asian flying locust and Tibetan flying locust 3 kinds, of which the East Asian flying locust in our country has the widest distribution range.

Grasshopper: grasshopper subfamily insects. With the locust genus of the same kind, but different species.

Second, the difference in habits:

Locusts: locusts are characterized by periodic outbreaks of large populations and can migrate long distances. The transformation of locusts from dispersed individuals to individuals who prefer to live in groups is an important reason for the formation of large-scale groups, long-distance migration and plagues of flying locusts.

Grasshoppers: without the habit of clustering and migrating, often living in one place, usually scattered in the field edge, grass activities, eating grass plants, so it will also have a certain harm to rice and bean crops.

Three, the appearance of the difference:

Locusts (commonly known as "grasshopper"): antennae are short whip-like, with strong hind legs, can be used to avoid the natural enemy bouncing. Body color green and brown, is the protective color of the living environment. The forewings are long and narrow, often exceeding the middle of the tibial segment of the hind foot, with brown and dark markings, darker in the group type. The hind wings are colorless and transparent.

Grasshopper: often green or yellowish-brown, males are small, females are large, with reddish longitudinal stripes on the dorsal surface. The median ridge, lateral ridge and ventral margin of the dorsal plate of the prothorax are light red. The forewings are green or withered grass color, with light red streaks along the elbow vein area, or dark brown longitudinal stripes on the midrib, and the hindwings are light green.

Expanded Information

Prevention Methods

Preventive measures

Suppressive measures should be emphasized in the early stages of early prevention and suppression, supplemented by late extermination, and the implementation of sustainable management of flying locusts. That is, actively develop and improve the level of detection and early warning technology, so that information can be transmitted quickly and accurately, transforming and managing the locust's base of occurrence, creating ecological environments unfavorable to the occurrence of flying locusts, controlling locust infestation fundamentally, and using drugs to control and inhibit the formation of swarming locust populations when necessary.

Revamping the ecological environment of locust areas

(1) Constructing water conservancy, so that droughts and floods do not occur.

(2) Reclaiming land for planting, changing the habitat of locusts and reducing the area of the base of occurrence.

(3) Protect and utilize natural enemies. Make full use of the local advantageous natural enemies and give full play to their ability to naturally control locust populations.

(4) Integrated development of agriculture, forestry, animal husbandry and fishery. The key flooded locust areas can be used "on the grain under the fish" integrated agricultural development measures to suppress the density of flying locust populations. For the more stable locust areas, the vegetation cover can be improved by sowing pasture, regular grazing, and strengthening pasture management measures.

Chemical control

Control of the appropriate period: generally the locust control of severe occurrences of locusts will be the appropriate period of locust locust immature hatching out of the ground before the age of three. Control indicators: East Asian locust control indicators for the summer locust 0.3 head / ㎡, trial 0.45 head / ㎡.

(1) Spray or powder. Malathion + second-line oil, Ruijinte ultra-low-volume sprays, etc. for aircraft ultra-low-volume spraying. Carnifex, Malathion crude oil, Rifling, etc. are used for ground ultra-low-volume spraying.

(2) Baiting. When there is insufficient medicinal equipment or sparse vegetation, baiting with poisonous bait is effective in control.

Biological control

(1) In locust-infested areas, highly efficient and low-toxicity agricultural and biological pesticides are used to protect predatory natural enemies in locust areas. Poultry such as chickens, ducks and geese can also be stocked on hillsides for control.

(2) Large-scale application of microsporidia.

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