Eucalyptus insects, how to control them???

Prevention and control of eucalyptus pests and diseases (1) Types of pests and diseases: Pests and diseases generally include bacterial wilt, scorch blight, wilt, shoot blight and erythema. Pests generally include termites, crickets, beetles, leaf-curling moths, bag moths, aphids, etc.

2) Prevention and control of seedling diseases and insect pests before afforestation: Before leaving the nursery, it is necessary to check whether the seedlings carry scorch blight and stem rot, whether the seedlings in the seedling field have continuously appeared bacterial wilt, and whether there are aphids in the tips. The seedlings with the above-mentioned diseases and insects cannot be planted without treatment.

After the backlog or long-distance transportation of seedlings, due to the stems and leaves will be lost to varying degrees, do not drench immediately after unloading, if placed for more than 2-3 years before afforestation, should be sprayed again fungicide to prevent the infection and epidemic of diseases; (3) Prevention and control of pests and diseases in middle and young forests: timely uprooting of blight and wilt plants, and disinfection of disease holes with lime powder; Branch and leaf diseases such as scorch blight, shoot blight, and red spot should be prevented and controlled when the occurrence area is small and the harm is not too serious, and appropriate fungicides can be selected and sprayed according to regulations; Termites that are harmed again on the forest land should be diluted with termite medicine and controlled step by line, and appropriate fungicides can be selected and sprayed according to regulations; For termites that are harmed again on the forest ground, it is advisable to dilute the roots of the seedlings with termite potion, row by row, and plant by plant; For stinging and sucking pests such as aphids that have just occurred, spray them equally with systemic insecticides as soon as possible; For leaf-eating pests such as inchworms and bouch moths that are about to or have become seriously infestation, they should be sprayed with poisoning, contact chemicals or biological pesticides; For tall and large trees, it is advisable to use a high-horsepower forest sprayer to operate, or use a suitable powder to reach the tip end of the forest by mechanical spraying.

Peanut oil can be poured into the hole.

Ecological restoration, raising ants or birds.

The previous method of exterminating eucalyptus was to wrap the head of the felled eucalyptus tree with a black plastic bag to isolate it from the air, so that the tree head rotted, but not completely, and the plastic bag would bring pollution; The second is to use glyphosate to destroy the growth structure of eucalyptus, which will cause soil to be destroyed, and the use of ecological eucalyptus extermination technology is beneficial to farmers planting and the environment: "The science of our eucalyptus eradication is to use biological methods in Huaizhou, a physical borehole, a horizontal cutting ridge Ming Feng, cutting off its nutrition, letting it ferment, let it rot, we break through this technology." ”

1. Disease prevention Scorch blight, bacterial wilt, stem rot and gray mold are common diseases of fast-growing eucalyptus. Scorchroida is mainly manifested as gray-green water stains at the junction of healthy tissues and diseased spots, and the leaves are dried and shed. Bacterial wilt can occur throughout the growth cycle of fast-growing eucalyptus trees, which is mainly manifested by wilting, wilting, drooping and dying within a few days.

Stem rot is characterized by white water-stained spots at the base of the plant's stem, which then turn brown and black. Botrytis is characterized by the formation of fungal molds on the surface of plants. The prevention and control of fast-growing eucalyptus diseases should adhere to the principle of prevention first and combination of prevention and control.

First of all, thorough disinfection should be carried out during the planting process to prevent the introduction of germs with the seedlings, and the drainage system of the planting area should be kept normal to cut off the transmission route of germs. Also pay attention to reasonable fertilization. In addition, chemicals such as Bordeaux liquid, chlorothalonil, methyl tobuzin and other substances can also be used for sterilization.

2.Pest PreventionTerrestrial termites are a common pest of fast-growing eucalyptus trees and usually occur in the young forest stage. Termites first damage the roots and stems of young trees, then turn to the surface and ground, stripping the taproot and root clough along the topsoil, and eventually the seedlings are unable to deliver nutrients and die.

The prevention and control of ants should focus on prevention, and they should be trapped. During afforestation, 3 4g of carbofuran can be placed in the hole, mixed with soil-based fertilizer, and then filled in the hole, and the drug is used every 667m2. After afforestation, 2g of carbofuran can be placed at a distance of 5m from the tree pocket, and the dose is each, and attention should be paid to avoid contact between the powder and the sapling when using the medicine.

Fast-growing eucalyptus is one of the fastest-growing tree species in the world. Reasonable cultivation techniques are of great significance to improve eucalyptus yield. Every aspect of fast-growing eucalyptus cultivation and management affects its final yield.

The use of scientific planting technology and strengthening the prevention and control of pests and diseases will surely achieve the purpose of rapid increase in yield. 3.Weeding artificially lay a layer of black film with a thickness of 1m2 of 5 lines, and then press the surrounding edges with soil, which shall prevail if the wind blows.

Or use thinner agricultural film (1 1 or. It is recommended to lay the agricultural film in strips with meter width, which saves labor and time. It is estimated that the cost of 1m2 black film (non-degradable) is per plant; Agricultural film (degradable)** is per plant, and the life span can generally reach 10 to 12 months.

The method of using farmland film does not need to be weeded within one year, and at the same time has good heat preservation, water retention and insect prevention functions.

Eucalyptus trees are adaptable and can grow in soils with thin ridges. However, its fast-growing properties can only be exerted under suitable soil conditions.

1. Soil: Eucalyptus likes fertilizer, generally requires deep soil, good acres of loose and fertile red soil or brick red soil, and grows well when the soil is neutral or slightly acidic.

2. Light: Eucalyptus is a light-loving tree species, which needs strong sunlight to grow well throughout the growth period, and the sunny slope grows better than the shady slope.

3. Altitude: Mountain afforestation should also consider the altitude, every 100 meters above sea level, the temperature drops, and the problem of cold tolerance should be considered, and the altitude is generally not more than 350 meters. 4. Temperature: The annual extreme temperature is lower than -5, and eucalyptus trees should not be planted.

1. Disease prevention and control of scorch blight, bacterial wilt, stem loose bench rot and gray mold are common diseases of fast-growing eucalyptus. Scorchroid wilt is mainly manifested as gray-green water stains at the junction of healthy tissues and diseased spots, and the leaves are drying up and falling off. Bacterial wilt can occur throughout the growth cycle of fast-growing eucalyptus trees, and is characterized by some or all of the leaves wilting, drying, drooping, and dying within a few days.

Stem rot is characterized by the appearance of white watery lesions at the base of the stem, which then turn brown and black. Botrytis is characterized by the formation of fungal mold on the surface of the plant. In the prevention and control of fast-growing eucalyptus diseases, it is necessary to adhere to the principle of giving priority to prevention and combining prevention and control.

First of all, it is necessary to carry out thorough disinfection during the planting process, prevent and control the germs are brought in with the seedlings, and also maintain the normal drainage system in the planting area to cut off the transmission route of germs. Attention should also be paid to rational fertilization. In addition, you can also choose Bordeaux liquid, chlorothalonil, methyl tobuzin and other chemical agents for sterilization.

2. Insect pest control Soil-dwelling termites are common insect pests of fast-growing eucalyptus, which usually occur in the young forest stage, termites first harm the rhizomes of young plants, and then turn to the surface and the ground and strip the roots and roots along the topsoil, and finally make the seedlings unable to deliver nutrients and die. The prevention and control of ant pests should be based on prevention, and bait should be trapped. In afforestation, 3 4g of carbofuran can be placed in the hole, mixed with soil base fertilizer to fill the hole, and the drug can be used every 667 m 2.

After afforestation, 2g of carbofuran can be placed at a distance of 5m from the tree pocket, and the medicine should be used every 667mz, and attention should be paid to avoid the pesticide damage caused by the powder touching the saplings.

Fast-growing eucalyptus is one of the fastest growing tree species in the world, reasonable cultivation technology is of great significance to improve eucalyptus yield, every link of fast-growing eucalyptus planting and management will affect its final yield, the use of scientific planting technology, and strengthen the prevention and control of pests and diseases, will be able to achieve the purpose of rapid increase in yield.

3. Weed treatment: Manually lay 5 filaments thick 1 m2 black film and press the surrounding edges with soil after paving, subject to the wind that cannot be blown away. Or use thinner agricultural film (1 1 or, it is recommended to use meter-wide agricultural film to lay in a strip to save labor and time. It is estimated that

The cost of 1 m2 black film (non-degradable) per plant is RMB; The use of agricultural mulch film (degradable) is the first element of each plant, and the life span can generally reach 10 to 12 months. The use of agricultural mulch film does not need to be weeded within one year within the scope of use, and has a good effect of heat preservation, water retention and insect control.

The best way to prevent insects is to poison them with pesticides.

OK. The eucalyptus attack Sun tree is slightly bitter, slightly bitter and flat. It has the functions of dispelling wind and relieving fever, antibacterial and anti-inflammatory, antiseptic and anti-itching. The main treatment is to prevent the epidemic of ** and the epidemic of eucalyptus macrophylla leaves decoction with water, which can treat and prevent influenza and cerebral flow.

Eucalyptus oil can be produced by water distillation from fresh eucalyptus leaves. Eucalyptus mainly contains eucalyptol (65-75%). Terpenes, isopentyl leaf oil, caramarone, mentholone, piperone and other ingredients.

It can also be used as oral cavity, rhinitis, expectorant, cooling oil, carminative ointment and other medicinal raw materials. Stool and.