With the rapid development of modern social life, people pursue the sustainable development of human beings and the earth's ecological environment, so the national government and relevant departments attach great importance to the effective prevention and control of forestry. At the same time, it is urgent to improve the level of prevention and control of forest pests. This seemingly simple project is actually very arduous, because pests have certain harm and destruction. Therefore, this makes the prevention and control of forest diseases and insect pests more unusual, which invisibly increases the difficulty of construction work.
1. 1 Attach importance to ecological environment protection.
In response to the call of national ecological environment protection, people's awareness of ecological environment protection has gradually increased, and relevant departments in various regions have made great efforts in the construction of harmful ecological environment. Among them, the main achievements are reflected in forestry construction. For example, at present, China's major forestry provinces have implemented large-scale afforestation, returning farmland to forests, desert greening and other projects, which have greatly expanded the forest area and invested heavily in forestry.
Therefore, with the expansion of forest area, the tasks and difficulties of forestry-related departments have also increased, so at this time, pest control has become a top priority.
1.2 Insufficient pest control
With the continuous progress of science and technology, various pests and diseases in the forest hinder the growth of forest vegetation in China and restrict the development of ecological civilization construction in China. These pests include poplar stem borers, pine caterpillars, pine leaf peaks and forest rats. Exotic insects such as Hyphantria cunea, Dendroctonus valens, Bursaphelenchus xylophilus and Dendroctonus valens have caused serious damage to forest resources and ecological environment.
Due to the single species of forest vegetation in some areas, once insect erosion occurs, the forest ecosystem will be destroyed and the number of vegetation will be less and less. In order to solve the problem of pest invasion, most areas will spray pesticides on these vegetation.
Although these chemicals will play a corresponding role in the forest in a certain period of time, they will also have a negative impact on the forestry ecosystem. For example, after spraying pesticides on trees and plants, these chemicals will cause some physiological changes of plants, which will make vegetation more susceptible to erosion by pests.
Therefore, after comprehensive consideration of various factors, spraying pesticides to control forest pests will not only inhibit the growth of other species on land and vegetation, but also affect the healthy life of human beings.
2. Factors leading to the outbreak of forest diseases and insect pests
Through the analysis of the causes of pests in China's forestry ecosystem, it is found that there are not single factors causing this phenomenon. For example, after trees are damaged, the weather becomes capricious, and the species of animals and plants decrease, thus destroying the balance of forestry ecosystem. The use of a large number of chemical pesticides leads to the decrease of predators and destroys the balance of biological chain.
In addition, some people cut down trees indiscriminately, and trees are used for the construction of cities, factories and houses, which have caused serious damage to the originally stable forestry ecosystem.