In the autumn of October, the harvest season, the countryside is full of busy figures. At this time, an invasive alien species also competed with farmers for the fruits of their labor. If you find it, you must completely eliminate it, otherwise there will be endless troubles. If it is allowed to rage, all the vegetation leaves will be swept away.
After half a day, many people think that xiaobian is talking about locusts, in fact, it is not, but the caterpillar in the picture above, this thing is more powerful than locusts, the state has specially taken out control funds for this, the scientific name of this caterpillar is "American white moth", which is an invasive alien species, which was introduced to China in 1979.
Don't look at this caterpillar inconspicuous, but the harm to agricultural forestry is quite large, and its main harm presents four characteristics: one is the food mixture, the larvae of the American white moth eat more than 300 kinds of plants; the second is a large amount of reproduction, 3 generations a year, can reproduce to tens of millions, up to 100 million; the third is adaptable, larvae above 3 instars can tolerate hunger for more than 7 days; fourth, the transmission route is wide, and the mature larvae, pupae, and adult insects can spread long distances with forest products and means of transport. Because these characteristics determine that the American white moth is extremely prone to outbreaks, it is called "smokeless fire".
As for how harmful the American white moth is to green vegetation, Xiaobian directly showed the picture. This is a few days ago Xiaobian went to the countryside to interview the film, this tree has basically been eaten clean by the American white moth, leaving only light poles. This is still light, looking down at the picture, it is unbearable to see, and the woods are eaten clean by it.
Later, when talking to the farmer about this, the farmer discovered a law of the American white moth invading the vegetation, that is, its feeding habits. This caterpillar first eats the delicious leaves of mulberry trees, and then the elm trees, poplars and other tree species, basically overnight, can turn these green trees into light poles, making people look like entering the middle of winter.
At present, what we see is the third generation of American white moths, this season is the peak period of the most harmful to American white moths in the year, when the American white moth will overwinter under the tree pupa, "caterpillar" is easy to be observed, so we should improve the awareness of active prevention and control of American white moths and annihilate this pest.
The following teaches you several prevention and control methods: First, cut the net curtain, and in the larval net screen period, the net screen is cut down and destroyed centrally. Second, artificial pupae, before the American white moth pupates, tie grass at about one meter from the ground from the trunk to lure pupae, centralized destruction, but also in the pupal stage digging pupa elimination. Third, the control of agents, the larval stage, spraying larval urea, matrine, bitter smoke emulsion, hyperosmolar phenoxyvir and so on. I hope you can fight a war of annihilation of the American white moth.
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