Davidia involucrata blossoms like a flock of pigeons
Davidia involucrata, also known as @ # @ 247 trees, originally grows in cold mountain areas with an altitude of 1000 to 2000 meters above sea level. It likes shady, wet, slightly acidic or neutral soil. It is a first-class protected tree species in the country. It blossoms in spring and looks like pigeons, hence the name "pigeon tree". The Forestry Institute of Xiangfan City, Hubei Province, was introduced and cultivated in 1980, and now there are more than 200 plants, the largest of which is 13 meters high and 14 centimeters in breast diameter. On April 10, the 27-year-old Davidia involucrata is full of flowers, about 800, like a flock of pigeons dancing. Xiangfan Forestry Institute is located in Gulongzhong Scenic spot. This tree grows at an altitude of more than 150 meters. It is rare to see successful introduction and luxuriant flowers at such a low altitude.
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The reproductive ability of dogs
The reproductive ability of dogs has reached sexual maturity before 1 year old, showing the phenomenon of oestrus (commonly known as "naughty dog"), but the time of physical maturity varies according to the breed of dog. Generally speaking, small dogs mature earlier than large dogs. For Beijing dogs, Xishi dogs and other small dogs, it is appropriate to breed and conceive in the second estrus (about 12-14 months old), while Great Dane dogs and black shellfish dogs are better after 18 months of age, because they have reached maturity at this time. The highest pregnancy rate occurs when the bitch is in estrus.
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Common characteristics and habits of Fructus Scutellariae
It is profitable to raise special economic animals, especially special fur animals. However, the time for domestication and breeding of special fur animals is relatively short, not only strong wild, but also retain many wild habits, special breeding must fully understand the characteristics and habits of these animals, in order to carry out targeted breeding and management. The beetle looks like a fox, but has short calves and long fluffy hair. With the Yangtze River as the boundary, it can be divided into two species: southern raccoon dog and northern raccoon dog, but according to the specific producing area, it can be divided into Wusuli raccoon dog, Amur raccoon dog, Korean raccoon dog, Jiangxi raccoon dog, Fujian and Guangdong raccoon dog, Hubei raccoon dog
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