more than 500 species Learn more about more than 500 species
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There are more than 500 species of alien invasive plants in China.
In recent years, tropical micro-chamomile, southern Phoenix blue, southwest Eupatorium adenophorum, these exotic invasive plants have caused serious losses to China's ecosystem and economic development. The latest survey shows that there are more than 500 species of alien invasive plants in China. Chinese department
2016-03-20 China exotic invasive plant has more than 500 species tropical micro -
There are 529 alien invasive species in China, resulting in a loss of 57 billion yuan a year.
The invasion of more than 500 alien species engulfs 57 billion yuan a year, which is caused by the invasion of alien creatures in Beijing by reporter Zhang Wen, which not only seriously interferes with the ecosystem, but also brings an average annual economic loss of more than 57 billion yuan to our country. The Ministry of Agriculture issued a message on July 29 that I
2016-03-20 China alien invasive species up to 529 species a year bring 500 -
The Legend of ● 's "Green Cloud"
The Legend of ● 's "Green Cloud"
2018-04-27 -
Brief introduction and culture techniques of red tilapia
Brief introduction and culture techniques of red tilapia
2018-07-10 -
Due to the water system, fish species should be put in reasonably.
In an activity of science and technology going to the countryside, the author learned that the output and benefit of many fish farmers were not ideal in the process of fish culture in ponds over the years. the main reason is that the fish species are not reasonably matched according to the fish diet and habits, and the species is single, the quantity is too large and the size is small. This situation exists more or less all over the country, and the end of the year and the beginning of the year is the season for the release of a large number of fish fingers. in order to make full use of the water body, put the fish species reasonably and increase the yield per unit area of the water body, the fish species will be put in reasonably according to the water system.
2019-01-16 -
A complete collection of pictures of bullfrog species
A complete collection of pictures of bullfrog species
2018-07-07 -
A new species of mushroom glows green at night
Beijing Science and Technology News, November 1, 2006: a cluster of mushrooms glows green at night or in dark places in Ribeira Canyon State Park, not far from Sao Paulo, Brazil, according to National Geographic. There are more than 500 species of fungi in the world, of which 33 species will glow. This kind of mushroom is one of the newly discovered species that glow. During the day, this mushroom is inconspicuous, but at night, chemical reactions make it emit a soft and strange green light, sometimes called "fox fire". Since 2002
2019-01-16 -
What are the characteristics of Korean pine species?
The characteristics of Korean pine species are as follows: evergreen trees of Pinaceae. It can be up to 50 meters high and 1.5 meters in breast diameter. The trunk is straight and complete, and the crown is conical. The tree can be more than 500 years old. It is one of the precious timber tree species in China. Because the trunk is straight, the material is good, the yield is high, the decay resistance is strong, and the technological value is extremely high. It is an excellent material for construction, aviation, electricity posts, sleepers, bridges, vehicles and ships. It is also a good raw material for making all kinds of moulds, plywood, musical instruments and sports equipment. In addition, Korean pine can also extract resin; bark can
2019-01-15 -
Common orchid species and small techniques for orchid maintenance
Common orchid species and orchid maintenance techniques as the orchid of the plum orchid bamboo chrysanthemum "four gentlemen in the flower" orchid, beautiful flower shape, vitality and environmental adaptability.
2019-02-22 -
Characteristics and introduction of bullfrog species
In recent years, bullfrog has become more and more popular. Because of its delicious taste, white and delicate meat, bullfrog has become a characteristic dish in many restaurants. Bullfrog has high edible and medicinal value, and has the effect of nourishing and detoxifying, nourishing the mind and calming the mind and invigorating qi. Now we buy it on the market.
2020-11-27 Bullfrog species characteristics and introduction in recent years bullfrog more and more -
Seven delicious and sweet grapes suitable for planting in 2020!
Grape is a very famous fruit in the world, which can not only be eaten raw, but also be used as raisins, wine and other food. Next, let's take an inventory of the seven delicious and juicy grapes suitable for planting in 2020! Beauty refers to
2020-11-08 2020 suitable planted Seven delicious Juice Sweet High quality -
Knowledge of fish culture in reservoir
Now many people are starting to raise fish in the countryside, and many people are building a reservoir in the countryside, but there are also a lot of exquisite fish farming in the reservoir. Let's learn about the relevant knowledge with Xiaobian, hoping to help the new aquaculture friends. Reservoir cultivation
2020-11-08 Reservoir fish farming knowledge now many people all in the countryside begin -
Culture Technique of Crucian Carp Variety Xiangyun Crucian Carp
Culture Technique of Crucian Carp Variety Xiangyun Crucian Carp
2018-07-10 -
What should be paid attention to when releasing fish fry in winter in the reservoir
Every winter is the golden season for releasing silver carp, bighead carp, grass carp and herring to the reservoir. However, many mariculturists report that a large number of dead fish and swimming diseased fish will be found on the water surface of the reservoir within 2 ~ 7 days. The skin of these fish loses luster and the body surface mucus increases. According to the above symptoms, it can be inferred that the fish is suffering from a typical "incompatibility of soil and water". The disease is mainly caused by the sharp change of water temperature and the strong stimulation of nerve endings in the skin of fish, which leads to the dysfunction of internal organs and its death.
2019-01-16 -
When do ginkgo leaves turn yellow and deciduous? When will new leaves grow? What are the famous places to watch?
Ginkgo biloba, also known as ginkgo tree, Gongsun tree and duck foot tree, is a rare tree species of Mesozoic era and is a specialty of China. Ginkgo trees usually bloom in April, the leaves begin to turn yellow in October, the leaves begin to fall in November, and tender new leaves begin to grow in May of the following year.
2020-11-09 Ginkgo biloba leaves general what month yellow fallen leaves when? -
Culture techniques of lobster
Culture techniques of lobster
2018-07-04 -
Orchid plant nutrition soil pine chestnut king bark particle matrix plant species Chunhui Jianmu orchid special general mixed type
Many orchids have dug orchids or picked orchids in the mountains, and you will find that lush orchids grow in mountain forests with thick substrates, loose pines, fertile pine trees and chestnut trees. So what is this matrix? This matrix is some pine bark, pine.
2018-07-23 -
What kind of crab is a winter crab? Is it like swimming crab? How much half a kilo?
Winter crabs are winter crabs, which are generally fat and beautiful in winter, but at present, winter crabs on the market are all new crabs, so the price is about the same as ordinary crabs, not very expensive, but their nutritional value is not inferior to other crabs, what kind of crabs are winter crabs? And swimming crab one
2020-11-11 Winter crab what is crab and shuttle the same Mo more less money -
Technology and video of wasp culture
Technology and video of wasp culture
2018-07-02 -
Planting methods and cultivation techniques of Corydalis tricolor (picture)
Pansy is a common species of wild flowers in Europe. It is a biennial or perennial herb of the genus Viola of the family Viola, also known as cat face, butterfly flower, cat face flower, grimace flower, etc., often cultivated in parks, usually suitable for open-air planting, suitable for flower beds, gardens and potted plants, but not suitable for indoor planting.
2018-08-31