What are the applications of natural enemy insects in the control of forestry pests?

<>1.Application methods of natural enemy insects

1) Choose good natural enemy insect species. Priority should be given to the selection of natural enemy insects corresponding control operations. This requires careful study of the reproductive ability of local pests, the degree of harm, and the corresponding types of natural enemies in order to choose.

Correct selection of natural enemy insect species, less investment, good effect, large returns. It can play a positive role and affect pests and diseases.

2) Preferential use of local natural enemy insect species. After selecting the excellent natural enemy insect species, priority was given to the application of natural enemy insect species. It is not that there are no natural enemy insects in forest pests, but that for various reasons, the number of natural enemy insects does not reach the level of pest control in the area.

Promote the development of natural enemies of native insects. In some cases, methods such as captivity may be needed to accelerate the reproduction of natural enemies and their ability to control pests.

3) Introduction of natural enemy insect species from other regions. Sometimes there are some natural enemy insects in the area, but these natural enemy insects cannot achieve the goal of forest pest control at this stage. The introduction of natural enemy insects from other regions is an efficient method, but there are several aspects that need to be noted.

For example, the introduction of natural insect enemies may bring other parasitic insects, leading to the emergence of new pests, and some insect natural enemies are introduced in small quantities, in which case artificial reproduction and other assistance are urgently needed.

2.Specific measures for the application of natural enemy insects

1) Bird-based pest control is a commonly used bird-based pest control method. In addition to woodpeckers, magpies, and other beneficial birds are also used occasionally. The control of bird pests is usually to attract and protect these birds by hanging artificial nests, and also to achieve the purpose of protecting birds.

In addition, like frogs, poultry also eat some pests, which can be released to complete forestry pest control efforts.

2) The use of fungi to treat pests is one of the forestry pest control measures, which has the advantages of rapid reproduction and low residue. Commonly used in China are Bacillus thuringiensis, Beauveria bassiana, Beauveria niger, etc., and the effect is very significant. However, over time, forest pests develop resistance and are not effective.

3.Analysis of the release techniques of natural enemy insects

For the first time, mechanization was applied to the field of natural enemy control, so as to deal with some deficiencies in the artificial release of natural enemies, improve the efficiency and control effect of natural enemy release, reduce the cost of control, provide means of prevention and control for the large-scale outbreak of forestry and agricultural pests, greatly reduce the use of chemical pesticides, reduce the pollution and harm of pesticides to the environment, and conform to the national industrial policy of green economy, environmental protection economy and food safety production.

Natural enemies and insects can be used to control pests, we must pay attention to the density, and find suitable methods and skills when controlling them, and the application rate is particularly high.

You can cite the natural enemies of pests, so that you can effectively control them, choose some bacteria, fungi and other things to control, use light, use some special gases to control.

Summary. 1. Forestry control: In the seedling stage, avoid choosing a place with low and humid terrain and heavy soil clay as a nursery land, disinfect the seeds before sowing, and apply well-rotted organic fertilizer as the base fertilizer.

2. Afforestation control: create mixed forests, cultivate varieties that can resist pests and diseases, enhance the tree potential of forest trees through measures such as cultivation and weeding, and cut off diseased branches and leaves when forest trees are damaged. 3. Biological control:

The use of microorganisms to control forestry pests and diseases, some insects with fungi, antibiotics and other microorganisms, can effectively control longhornhorn, masson pine caterpillars and other pests.

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1. Forestry control: In the seedling stage, avoid choosing a place with low and humid terrain and heavy soil clay as a nursery land, disinfect the seeds before sowing, and apply well-rotted organic fertilizer as the base fertilizer. 2. Afforestation prevention and control

Create mixed forests, breed varieties that can resist pests and diseases, enhance the tree strength through tillage and weeding, and prune diseased branches and leaves when the trees are damaged. 3. Biological control: the use of microorganisms to prevent and control forestry pests and diseases, the insects are equipped with fungi, antibiotic bacteria and other microorganisms, and the liquid rock collapse can effectively control pests such as longhorn beetle and masson pine caterpillars.

1. Predatory natural enemies: There are many types of predatory natural enemies, among which the effect is better. Ladybugs, lacewings, aphid-eating flies, insectivorous flies, insectivorous bugs, wasps, walking insects and predatory mites, etc., such natural enemies generally eat a large amount of insects, and in the process of their growth and development, they must eat several, dozens or even hundreds of insects to complete their development.

Therefore, the rampant effect of controlling pests in nature is very obvious. For example, the application of ladybugs, lacewings, wasps and other aphids and cotton bollworms in cotton fields has achieved certain results.

2. Parasitic natural enemies: This kind of natural enemies parasitize the body of pests, feed on their body fluids and internal organs, and kill pests, mainly including parasitic wasps and parasitic flies.

1) Parasitic wasps: It is a bee that mainly parasitizes the body of other insects, and the control of agricultural pests is very extensive and has achieved certain results. For example, the use of red-eyed bees and cocoon bees to control pine caterpillars, corn borers, rice bracts, rice leaf rollers, pod borers, bean armyworms, soybean heartworms, bean moths, cotton bollworms, apple leaf rollers and other agricultural pests.

All parasitic eggs, larvae and pupae cannot complete their development and die halfway.

2) Parasitic flies: mostly parasitize in the larvae or pupae of butterfly moths, feed on their internal nutrients, and cause their death. Parasitic flies often lay eggs on the larvae or pupae of other pests, and after hatching, the larvae burrow into the body to feed on body fluids.

Some eggs are laid on plant leaves and are fed by pests into the digestive tract for parasitism.

Natural enemy insects are widely used in biological control.

Natural enemy insects refer to insects that feed on other smiling insects, which can play a certain role in biological control in nature. In view of the invasion of some pests, the use of natural enemy insects for biological control can not only achieve good control results, but also has many advantages such as environmental friendliness, safety and non-toxicity, ecological protection, etc., so it has been widely used in agricultural production and forest control and other fields.

This method takes time to accumulate, but it can help reduce pesticide use and environmental pollution, while also maintaining an ecological balance and making agricultural production more sustainable.