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http://entnemdept.ufl.edu/creatures/trees/moths/fall_webworm.htm
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Anhui Daily Press Group Daily News
2014-06-16
Winning destroy "moth" eco-war
Drury was included in China's first batch of alien invasive species, great harm. 2012 Drury since the province was first discovered, the rapid development of the epidemic, this year Huaibei, Suzhou, Fuyang, Wuhu City, 13 counties, four became infected - ■ newspaper reporter Wang Kai white moth attacks, blow "forest killer "urgent
"I did not expect such a stunning fall webworm destructive suddenly flooded last year, the village of Poplar like winter, residual Yepiao Ling. Larvae villages and households climbed on the windows, the kitchen, the floor, the walls, a a hairy crawling around, no place to hide people. "June 6, the reporter interviewed the village when the East Village Yongqiao District of Suzhou City, the villagers were ground fresh horses, dozens of acres of leafy poplar had a night Inter was the fall webworm, "shaved his head."
"Drury occurred three generations a year, beginning from April to the end of October each year, for up to six months time if the control is not timely, it will lead to a large area of rapidly spreading epidemic. Compared with 2012, the 2013 outbreak area from 699 acres to 8,445 acres, an increase of 11 times, the occurrence of strain rate 1278 to 16,963, an increase of 12 times. "Suzhou City Forestry Bureau chief engineer Yang Wenhua said that this year the epidemic is likely to spread rapidly to the city's most towns, predict the occurrence of an area of about 3.5 acres. If you do not take decisive and effective measures, is likely to lead to a big disaster.
Not long ago, the State Forestry Administration released in 2014 Drury epidemic announcement shows that the occurrence of pests has expanded the scope of the province Huaibei, Suzhou, Fuyang, Wuhu City 13 4 counties. According to the State Forestry Administration, forest pest monitoring, this north, fall webworm will place emphasis Huang-Huai region, where the province Suzhou, Fuyang, Huaibei and other places generally higher population density.
Reporters learned from the Provincial Forestry Bureau seized, fall webworm first discovered since 2012 in the province, each outbreak governments and forestry departments to take various measures to prevent and treat curb its spread speed. 2013, the province outbreak area of 1.74 acres, 8.42 acres control area, the province's capital of 11,254,500 yuan investment in prevention. The purchase of high-range sprayer, trapping, etc. 1108 (sets), 32.5 tons of pesticides. But the epidemic continued to show a tendency to spread, point occurred in increasing the degree of hazard in some areas increased, damage has occurred in some places in the city neighborhoods, destroy moth task is arduous.
Drury is a worldwide quarantine pests, the "forest locust," said the great harm has been included in China's first batch of alien invasive species. Provincial Secretary Fu Jun Lin seized description: "Drury miscellaneous eating habits, reproductive capacity, adaptability, serious harm not only the main hazard trees and fruit trees, can also cause serious damage to crops, vegetables, flowers and other 300 kinds of plants. Once poor control, causing the disaster, serious and even cause death of trees, fruit reduction, agricultural production, not only the forest landscape, incalculable economic losses, but also serious damage to the ecological environment, forestry ecological safety hazards, the impact of ecological civilization construction process. " Seize the opportunity to get rid of a "moth" is equal to rescue hundreds of acres of forest land.
"Current to early July, the first generation of fall webworm prevention is essential to eliminate a fall webworm equal to rescue hundreds of acres of forest land." Has been the first line in the fight against the fall webworm Yongqiao District Inspection Station Master Li Ying Lin , counting down to reporters calculations: "a lifetime of larvae feeding on poplar leaves 22-30 pieces can spring a female moth eggs to larvae of the third generation can multiply 200 million, a year eaten on acres of woodlots leaves, and tree leaves are eaten, a sharp decline in growth this year is basically not very long. "
Although the larvae will only harm the outbreak, but the fall webworm war, basically throughout the year and always. Being monitored in the woods when pests town forestry station Songcheng Zhang introduced from October until April next year, is the annual fall webworm pupae artificially dug manual control of the first pass. Larvae take artificial cut off net curtain, spraying pest control, black light trapping adult stage, the incubation period to take poison rope tied to a tree, etc. kill, but also the use of biological control. January of this year, when the village town government paid out more than 30,000 yuan closed pupae overwintering pupae were acquired 80,000 bulls, greatly reducing the overwintering population base. A light one day last year to monitor the peak catch 555 adults, up to a day a year to capture the lamp only 55 adults, 90 percent less than last year and more.
A forestry expert said: "The reason why the province was the proliferation epidemic trends, on the one hand, as an invasion of alien species breed, fall webworm no natural predators in China, spread wide pathways, culling can only rely on artificial; hand, Members of this lack of awareness of alien insects, at the beginning of measures have not kept pace, poplar leaves are eaten flooded, only to find the best prevention missed opportunity, but not all of a sudden want to rule the rule. "
Reporters learned that this year around taking a variety of labor, while the ground poplar leaf-eating pests prevention, control measures escalating. Fuyang City, developed in 2014 Drury prevention embodiment, in addition to spraying agent, also acquired net curtain fall webworm, encourage artificial physical control, the use of insecticidal lamps kill adults and prevention of new technologies such as trunk injection. Chuzhou contingency plans this year will fall webworm prevention level to the government level, and publish inspection briefing, tracking supervision and supervision. Suzhou City government at all levels to raise funds more than 200 million yuan to buy a large vehicle-mounted sprayers, sprayer stretcher and other large machinery, organizational control company, control of professional teams, and conducting large-scale prevention.
Drury fly on the implementation of defense, operating area of 9.2 acres, to achieve synchronization with the ground in addition to prevention of governance, to quickly lower population density. And the form of the purchase of services, the introduction of professional control company contracted to carry out prevention, and explore new ways of forest pest control. Can not slack off, to prevent pest invasion fight "protracted war"
"Afforestation is one aspect of our work, but more important is the ranger. Forestry pest control work as a ranger, it should be the same as cause and forest fire prevention departments at all levels of importance." Comrades in charge of the Provincial Forestry Department, where The "forest", there is prevention of fall webworm this work.
"The key to prevention is to persevere, not give the opportunity to insects comeback." Seized Suzhou City Secretary Chen Yi Zhou Lin said that although prevention and control situation is not optimistic, and good prevention work has been widespread attention, municipal finance arrangements for 300,000 yuan per year special funds, and this year specifically charged 800,000 yuan of funds for aircraft pesticide control, which is unprecedented. "But also the linkage zone defense can not stay dead, do not leave it blank."
January this year, the province held a major forest pest control headquarters enlarged meeting requirements, quickly started battle pine wilt disease prevention and fall webworm and other major forest pest and ensure the province's construction achievements Qianwan Mu forest and forest resource security . Accordance with the deployment, through identification of overwintering, the battle of the first generation, second generation and third generation to prevent, to Treatment, control the epidemic from spreading, reduce the degree of harm, the worm does not achieve disaster. Even where the epidemic has not yet occurred Drury, but also strengthen the monitoring, to grasp the epidemic dynamic, proactive early warning, effective prevention, timely detection and timely eradication. In particular, to strengthen the road, rail on both sides of the poplar pest control, prevent the emergence of "bald" tree.
A forestry expert said, a little less than the harm fall webworm forest fires, called "smokeless forest fires." Off moth is no timetable for a "protracted war." Invasive alien species and latency settlers sometimes for two or three years or even a decade or two. Immigrants from China Drury mutation has occurred, and its ability to destroy more powerful, not to mention numerous poplar province, it is easy to let it survive and develop.
This lack of predators once powerful alien species to adapt to the environment, would rob other creatures living space, affecting the ecological balance. He said that over the years the outbreak of pest damage concentrated in high-speed, channel, etc. shelterbelts, ecological corridors, species of unity is the root cause.
Reporters learned from the Provincial Forestry Department, the province in the region to further improve the defense mechanisms, guidance service mechanism, on the basis of the emergency response mechanism, give full play to the role of the market, and actively cultivate professional, social forestry pest control organization, formed sector regulation, main commitment, social organizations involved in the implementation of the specific situation of affairs prevention, prevention mechanism to speed up the establishment of the new society to adapt to the market rules. The population density of the pest control within the allowed range of economic and ecological, curb the spread of momentum, so that the worm is not disaster, to maintain ecological balance.
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