one species Learn more about one species
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China has become one of the most serious invasions of alien species.
On July 24, the national exotic invasive organism water hyacinth was killed on the spot in Guilin Town, Tongnan County, Chongqing. Water hyacinth is one of the top ten malignant invasive weeds in the world. It was introduced into China in the 1930s and has spread in the middle and lower reaches of the Yangtze River.
2016-03-20 China adult alien species invasion the heaviest one July -
The fire was the second death they were forced to experience.
A fire in Brazil has touched the hearts of countless scientists and museum enthusiasts-the fire that started last Sunday night burned almost all of the main collection of the National Museum of History of Brazil, and 20 million collections were torched, including.
2018-09-08 -
What is the model of cultivating one-year-old fish species in Guangdong and Guangxi
The way of cultivating one-year-old fish species in Guangdong and Guangdong is different from that in Jiangsu and Zhejiang. Instead of multi-species mixed culture at the beginning, monoculture was carried out in the early stage, and after the fish grew to 5-6 cm, mixed culture was carried out in proportion. The advantages of this way of cultivating one-year-old fish species in Liangguang are as follows: (1) the survival rate of fish cultured alone in the early stage is relatively high, usually 80% to 90%. (2) in the later stage, we can "get rid of the inferior and take the best" when matching and stocking in proportion. Mixed culture of strong fish can also improve the survival rate accordingly.
2019-01-16 -
How to identify the quality of fish species in aquaculture
Strong fish species is not only an important basis for increasing adult fish production, but also one of the main conditions to improve the survival rate of fish species. The main standards for identifying the quality of fish species are 5.
2019-02-26 -
Summer Flower Fish: mainly raise one fish without putting carp feed combined with strong feeding
Summer flower fish species are small and delicate, and their ability to resist adverse environment is weak, coupled with the transformation of summer flower feeding at this stage, but the structure and function of their digestive system are not yet well developed, and their digestive ability is poor. If the feeding method is improper, there will be a large number of deaths. Through the experiment, the author found that the following culture methods can significantly improve the survival rate and culture benefit of summer flowers. Scientific stocking and reasonable matching of traditional breeding methods are mainly mixed culture of multiple varieties. However, from the perspective of production practice, due to the different eating habits of fish, this kind of culture
2019-01-16 -
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 -
Identification of seven species of closed-shell turtles
At present, the breeding of closed-shell turtles is one of the hot spots in turtle breeding. There are seven species of closed-shell turtles, except Anbu closed-shell turtle is a common species, the other six species are difficult to see their appearance. In order to enable farmers to select species correctly, the identification methods of seven species of closed-shell turtles are introduced as follows: 1. The difference between closed-shell turtles and other turtle species closed-shell turtles are specialized groups of turtles. The middle part of their abdominal nail is connected by ligaments, which is like a hinge and can move. after death, the ligament is broken and the abdominal nail becomes two segments, so the closed-shell turtle is called broken plate tortoise.
2019-01-16 -
Can foodie repel invasive species? Stupid humans are clothes.
Today's species calendar introduces hairy crabs. At the end of the article, we say that hairy crabs have become an invasive species in Europe and the United States. You may be surprised that hairy crabs can still cause headaches? Send a Chinese food delegation, not divide it.
2018-10-03 -
The three Gorges landscape bonsai is full of interest.
Title: the sun shines on the incense burner peak gives birth to purple smoke stone species: tortoise stone tree species: cypress specifications: 120cm*60cm*50cm three Gorges landscape bonsai appreciation (4) original author of three Gorges landscape bonsai garden in Wanzhou, Chongqing.
2018-07-27 -
How to identify high quality fish species
"half the profit is good for planting, and half the grain is good for seedlings." Strong and good quality fish species is not only an important factor to improve the survival rate of fish species, but also an important basis and guarantee to increase fish production and economic benefits. High-quality fish species should have: appropriate specifications, neat, robust and harmless, lively action, strong food grabbing power, specifically to identify high-quality fish species can be summarized as "three look and one sampling". A look: the specifications of fish species in the same pond and the same fish pond should be neat and uniform, with little difference in body length and weight, on the contrary, there is a large individual gap.
2019-01-16 -
What are the species of river fish in Wusuli?
The Wusuli River is an important tributary of Heilongjiang, with a total length of 909km and a basin area of 180000 square kilometers. it is one of the only unpolluted rivers in China, so there are all kinds of fishes. What are the species of fish in Wusuli? Let's come together next.
2020-11-27 Wu Suri River fish species species which Suli River are -
What are the species of parrots? What are the big parrots? What kind of food do you eat?
Parrots, also known as parrots, parrots, are many parrot-shaped birds with bright feathers and love to call. They are brightly colored and are often kept as pets. There are many kinds of parrots, including 2 families, 82 genera and 358 species, which is one of the largest families in the class Ornidae. Mainly distributed in tropical forests.
2020-11-11 Parrot parrot -
Common Species and Cultivation Techniques of Aquatic Flowers
Common Species and Cultivation Techniques of Aquatic Flowers
2019-09-12 -
Doctor "bug fan" discovers 13 new species of giant mosquitoes
Doctor "bug fan" discovers 13 new species of giant mosquitoes
2019-02-18 -
What are the common species of sea bass? Where is it made?
Perch is one of our common aquatic products, which contains nutrients such as protein, fat and carbohydrates, as well as vitamin B2, nicotinic acid and trace amounts of vitamin B1, phosphorus and iron. It can tonify the liver and kidney, invigorate the spleen and stomach, resolve phlegm and relieve cough.
2020-11-27 Bass have which common species produced in where bass yes -
What are the species of Dendrobium which is one of the four ornamental flowers?
Dendrobium is an orchid plant, the flower is a unique structure of Dendrobium-shaped flowers, bright colors, fragrant smell, is described as one of the four ornamental flowers, in addition to ornamental, but also medicinal. So, what are the species of Dendrobium? A brief introduction to Dendrobium! 1. What is the alias of Dendrobium?
2020-11-09 Four ornamental foreign flowers one of Dendrobium species which ones -
What kind of chicken is the desert bird sand pheasant? Is it protecting animals? How much is it for one?
Sand pheasant is often classified as the general name of 16 species of desert birds in Asia and Africa. So is it protecting animals? How much is it for one? According to the data of avian encyclopedia, there are 14 species of sand pheasant in the world, which are distributed in Africa, Europe and Asia.
2020-11-11 Desert birds sand pheasant what is it chicken yes protection animals? -
Did the close relatives of the piranha go to the Yangtze River? And citizens put 40 trucks of fish into the river at one time!
Did the close relatives of the piranha go to the Yangtze River? And citizens put 40 trucks of fish into the river at one time!
2019-02-20 -
Preparation of secondary strain of volvariella volvacea
The secondary species is a strain made by transferring the primary species into the culture material with secondary species. Second-class species can be directly used for production. In general, secondary species are transferred to the same culture material for expanded culture to become productive species. Secondary species are generally packed in 750 ml mushroom bottles or plastic bags. (1) Formula 1 of culture material: 90% of rice straw, 9% of wheat bran (rice bran) and 1% of gypsum powder. The preparation method is to select golden, mildew-free dried straw, cut it into 3 centimeters long, soak in water for about 12 hours, and make it.
2019-01-16 -
What are the species of turtles?
What are the species of turtles?
2018-07-02