Chinese sturgeon is mainly distributed in Hunan, Hubei, Jiangsu, Anhui, Henan, Hebei, etc. These areas are ancient areas of the Central Plains, China is also known as the Central Plains, China, it is named Chinese sturgeon. Chinese sturgeon has its inherent characteristics:
First, the external shape of Chinese sturgeon flat, oval-shaped body surface covered with soft leathery skin, back, abdomen. Carapace central convex, concave in the periphery, both sides have a thick connective tissue, commonly known as "skirt." Less plastron, incomplete development, ligaments between the back and plastron. There are many black fine lines on the head. The front of the hammerhead is triangular, the kiss is long and prominent, and the outer nostril at the center is at the front of the kiss. Eyes are small, born on both sides of the head, visually underdeveloped. Mouth width, upper and lower jaw with horny tooth plate, can crush hard snails, clams. The limbs are flat and short, with 5 toes at the front and rear, and sharp claws at the inner 3 toes. There is a well-developed aponeurosis between the toes, which is suitable for both land crawling and swimming. The tail is a flat cone with a dark green or brown back, depending on the habitat. The ventral surface is generally milky or slightly reddish, with individual yellow spots.
Second, the characteristics of feeding Chinese sturgeon meat-based omnivorous animals. In the natural world, small fish, shrimps, clams, snails, mussels, and animal organs are used as feeding targets. Small amounts of aquatic plants, tender stems, and vegetables, melons, and fruits are supplementary foods. Under artificial breeding conditions, they can be fed. Artificial compound feed or eel special feed.
Third, physiological characteristics Chinese sturgeon has the characteristics of hibernation. It is a variable-temperature animal and is very sensitive to changes in outside temperature. The level of body temperature is directly related to its ability to move and its degree of feeding. Its most suitable growth temperature is 28 °C ~ 32 °C. When the water temperature falls to 20°C, it enters hibernation, and hibernation usually takes place in water bottoms with a depth of about 2 to 3 meters. When choosing a wintering place, use your limbs to rotate your body and let the body into the sand. Mud depth varies with body size, and does not exceed 30 cm in depth. During hibernation, he does not eat any food and is suspended in a state of suspended animation. He relies on the throat tissue to absorb dissolved oxygen in the water to maintain the lowest life activity during the hibernation period. In addition, when the water temperature in midsummer exceeds 35°C, there is also a phenomenon of voluntary heat, and the group often lives in a cool place or in deep water.
4. Germplasm Resources For thousands of years, Chinese sturgeon has been mainly derived from the Yangtze River and the Yellow River. Especially Hunan Dongting Lake and Zhejiang area. The geographical environment and climatic conditions here are more suitable for the growth of Chinese sturgeon. These two areas are rich in rivers and lakes, and clear in spring, summer, autumn and winter. They are more suitable for the physiological characteristics of the Chinese wolfberry spring Su, summer production, autumn break and hibernation. People once called it the hometown of Chinatown.
In comparison with the Chinese baht and the Thai bastard, there is no black spot on the surface of the larvae in the Chinese mainland, and blue-black spots appear on the surface of the grapples in Taiwan and Thailand, and the “skirt†in the Chinese mainland is slightly wider. The "skirts" of seedlings in Taiwan and Thailand are slightly narrower.
First, the external shape of Chinese sturgeon flat, oval-shaped body surface covered with soft leathery skin, back, abdomen. Carapace central convex, concave in the periphery, both sides have a thick connective tissue, commonly known as "skirt." Less plastron, incomplete development, ligaments between the back and plastron. There are many black fine lines on the head. The front of the hammerhead is triangular, the kiss is long and prominent, and the outer nostril at the center is at the front of the kiss. Eyes are small, born on both sides of the head, visually underdeveloped. Mouth width, upper and lower jaw with horny tooth plate, can crush hard snails, clams. The limbs are flat and short, with 5 toes at the front and rear, and sharp claws at the inner 3 toes. There is a well-developed aponeurosis between the toes, which is suitable for both land crawling and swimming. The tail is a flat cone with a dark green or brown back, depending on the habitat. The ventral surface is generally milky or slightly reddish, with individual yellow spots.
Second, the characteristics of feeding Chinese sturgeon meat-based omnivorous animals. In the natural world, small fish, shrimps, clams, snails, mussels, and animal organs are used as feeding targets. Small amounts of aquatic plants, tender stems, and vegetables, melons, and fruits are supplementary foods. Under artificial breeding conditions, they can be fed. Artificial compound feed or eel special feed.
Third, physiological characteristics Chinese sturgeon has the characteristics of hibernation. It is a variable-temperature animal and is very sensitive to changes in outside temperature. The level of body temperature is directly related to its ability to move and its degree of feeding. Its most suitable growth temperature is 28 °C ~ 32 °C. When the water temperature falls to 20°C, it enters hibernation, and hibernation usually takes place in water bottoms with a depth of about 2 to 3 meters. When choosing a wintering place, use your limbs to rotate your body and let the body into the sand. Mud depth varies with body size, and does not exceed 30 cm in depth. During hibernation, he does not eat any food and is suspended in a state of suspended animation. He relies on the throat tissue to absorb dissolved oxygen in the water to maintain the lowest life activity during the hibernation period. In addition, when the water temperature in midsummer exceeds 35°C, there is also a phenomenon of voluntary heat, and the group often lives in a cool place or in deep water.
4. Germplasm Resources For thousands of years, Chinese sturgeon has been mainly derived from the Yangtze River and the Yellow River. Especially Hunan Dongting Lake and Zhejiang area. The geographical environment and climatic conditions here are more suitable for the growth of Chinese sturgeon. These two areas are rich in rivers and lakes, and clear in spring, summer, autumn and winter. They are more suitable for the physiological characteristics of the Chinese wolfberry spring Su, summer production, autumn break and hibernation. People once called it the hometown of Chinatown.
In comparison with the Chinese baht and the Thai bastard, there is no black spot on the surface of the larvae in the Chinese mainland, and blue-black spots appear on the surface of the grapples in Taiwan and Thailand, and the “skirt†in the Chinese mainland is slightly wider. The "skirts" of seedlings in Taiwan and Thailand are slightly narrower.
The product is suitable for the spring or fall of greenhouse, open field cultivation production, good shape, early maturity, strong cold resistance, high disease resistance, is one of the best varieties of thermal cultivation, sprawling, podding rate is high, the high yielding good, increase rate of big, about 4000 kg per mu.
Beans Seeds,Pole Bean Seed,Red Op Beans Seeds,Long Bean Seeds
Ningxia Zhongqing Agricultural Technology Co. Ltd. , http://www.zq-vegetableseeds.com