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Henan uses "biological missiles" to control pests
Recently, it was learned from the relevant departments in Qi County, Henan Province that, in order to reduce the damage to humans and crops caused by drugs, the county cooperated with the Wuhan Biological Research Center of the Chinese Academy of Sciences and adopted the biological control of forest pests to launch 20,000 "bio-missiles" for the first time. To the 5,000 mu of woodland locust pests in the forest fields, the pest population formed a virus epidemic, so as to achieve pest control biological control effect. At present, the density of insect population in the county has fallen by more than 60% compared with previous years. According to reports, this so-called "bio-missile" is putting tens of mung bean-sized tussah eggs in a cardboard box of the same size as an ordinary matchbox. After five days of running in Lintian, each tussah egg hatches into nearly 100 eggs. Only the Trichogramma with the virus, Trichogramma species, reproduces and produces viruses in the ovary of pests such as the woodcutter, which causes the formation of viral epidemics in the pest population, thus achieving the biological control effect of pest control. It is understood that the area of ​​afforestation and afforestation in Qi County, Henan Province, has rapidly expanded in recent years, but the ensuing wood-fly mutilation insect pests have also been spreading and developing. The affected area has reached more than 20,000 acres, and the economic forest trees and crops in the disaster-stricken areas have been greatly reduced. Even no income. In this regard, the county government has organized technical personnel to visit the affected areas for investigations and research measures. In order to reduce the harm of drugs to the human body and crops, they decided to cooperate with the Wuhan Biological Research Center of the Chinese Academy of Sciences to carry out biological control. Under the guidance of technical experts of the Chinese Academy of Sciences, in early July of this year, Qi County Forestry Department put the first batch of 20,000 "bio-missiles" into the county of Huangdong Township, Lintianli, which was damaged by 5,000-mu wood-footed locust in Shiyao Village. try out. Experts from the Qixian County Forestry Technology Promotion Center told the reporter: “Originally all of them were artificial or sprayed with airplanes. These two methods are costly and can also cause environmental pollution to the soil. It is not only costly to adopt this biological method to control pests and diseases. It is low, easy to operate, safe and environmentally friendly, and it is good for protecting beneficial insects and beneficial birds. According to calculations, the use of “biological missiles†to prevent and treat forest pests and diseases requires only 3 to 5 yuan per acre, which is half the cost of traditional spraying of pesticides. Above, it is very suitable for the prevention and control of pests in areas lacking water resources such as mountains and hills.