Recently, I believe that most people have heard of the grass moth, but what is going on may not be clear to many people. The grassland moth is an invasive alien species that is extremely harmful to crops! After the invasion of the grassland night moth in China, it has also attracted much attention, and all regions have entered a state of alert, and CCTV has also specially reported the harm of the grassland night moth. However, many people may not know very well how terrible the grassland night moth is, and what harm it will cause to crops, and the following Xiaobian will introduce it to you.
<h1>Introduction to the Meadow Nocturnal Moth</h1>
The meadow moth, as the name suggests, is a moth, similar to our common moth, and belongs to the genus Ofluteran in the lepidoptera family Noctuidae.
The larvae of the grassland nightcrawler have 6 ages and a body length of 1-45 mm; adults have a wingspan of 32-40 mm, the forewings are dark brown, the hindwings are grayish-white, and the margins have a narrow brown band, with a very strong migratory ability and reproductive ability. The harm to crops is mainly in the larval stage, when the larvae feed on the young leaves, stems, pistils, stamens and even fruits of the crop.
<h1>How the meadow moth entered our country</h1>
The grassland nightcrawler is an exotic species, which was not found in China, and was first distributed mainly in the warm climate of the Americas, but it can migrate and spread to all parts of the United States every year. Later, the meadow moth was introduced to Africa, and in two years, the grassland moth caused a devastating blow to Africa's agriculture. In January this year, the grassland night moth was introduced into China's Yunnan Province from India and Southeast Asian countries, and has since broken out in China.
<h1>The harm of the grass moth</h1>
The harm of the grassland moth is very large, and the insect infestation at the seedling stage of maize can lead to a yield reduction of more than 20%, and if it cannot be controlled in time, it may even lead to a harvest failure. In addition to corn, it can also cause harm to more than 80 kinds of crops such as rice and cotton. There are three main hazards: can eat, can fly, can live!
Can eat
This is the most direct harm of the grassland moth to crops, as mentioned earlier, the recipe of the grassland moth is very extensive, and most of the crops in China are its food. And they are all group battles, the amount of food is amazing, taking corn as an example, corn from seedling to harvest, the whole period can be said to be the food of the grassland moth.
Can fly
The migration ability of the grassland night moth is extremely strong, flying at night, and the migration speed can reach up to 100 kilometers per night, which is why the grassland night moth outbreak is extremely fast. As of June 6, more than five months, the grassland moth has been monitored in 884 counties (cities, districts) in 18 provinces across the country, with an area of 3.42 million mu.
Can be born
Such a large range of migration, the distribution range is so wide, what is even more terrifying is that the reproductive ability is extremely strong! A single grassland moth can lay more than 1,000 eggs per year, and under suitable temperature conditions, it can develop from eggs to adults in about a month. In other words, with the current temperature conditions, a new batch of grassland moths can be produced every month, and it will increase by 1000 times!!!
<h1>Control of the grassland moth</h1>
The grassland nightcrawler is an invasive alien species that has not occurred before, so there is no registered agent for the control of this pest in China so far. However, just because there is no registration does not mean that there are no:
After tests, agents such as methylamino avermectin benzoate, filamentosomide, polybactericide, ethyl polybactericide, cyanopyrifosamide, chlorantrane benzamide, carbonitrile, carbohydrazide, insecticide and urea have a killing effect on the larvae of the grassland night moth.
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