Traditional Culture Encyclopedia - Weather forecast - Can I raise lobsters in Dongying University, Shandong Province?
Can I raise lobsters in Dongying University, Shandong Province?
Second, the living environment of lobsters
1, spiny shrimp has strong adaptability. According to the survey, spiny lobsters are found in lakes, rivers and ponds.
Ponds, canals and paddy fields can survive, even in some water bodies where fish are difficult to survive. Lobster has a strong adaptability to dissolved oxygen in water. It can not only climb ashore in an anoxic environment, but also lie on its side on the water with the help of floating plants or aquatic plants in the water and breathe through its gills to survive.
2. Lobsters have a strong tolerance to hypoxia, and can climb ashore for gill breathing and survive in an anoxic environment. The pH value of water is in the range of 5.8 ~ 9, and it can still survive normally when the dissolved oxygen is lower than1.5 mg/L/L. The normal growth requires that the dissolved oxygen be above 3 ml/L.
Lobsters have a strong tendency to flow, like fresh water and flowing water, go upstream, and like to live in groups. In aquaculture ponds, groups often gather around the water inlet. In rainy days, shrimp can stay or escape on the shore for a short time against the current, and climb ashore to live when the water environment is not suitable, so the breeding ground should be fenced to prevent escape.
Three. Climatic precipitation
1, Dongying City is located in the mid-latitude, with its back to the land and facing the sea. Influenced by Eurasia and the western Pacific Ocean, it belongs to the continental season of warm temperate zone. The basic climate is characterized by Leng Xia heat in winter and distinct seasons. It is dry and windy in spring, and the temperature in early spring is changeable, often accompanied by spring cold, and it recovers quickly in late spring, often accompanied by spring drought; In summer, it is hot and rainy, hot and humid, and sometimes it is attacked by typhoons; In autumn, the temperature drops, the rain drops sharply, and the sky is crisp; In winter, the weather is dry and cold, the cold wind blows frequently, the north wind and northwest wind blow more, and the rain and snow are scarce.
2. The main meteorological disasters are frost, dry hot wind, gale, hail, drought, waterlogging and storm surge. There is no obvious climate difference between north and south in China. The average temperature for many years is 12.8℃, the frost-free period is 206 days, and the accumulated temperature not lower than 10℃ is about 4300℃, which can meet the needs of three crops in two years. The average annual precipitation is 555.9 mm, mostly concentrated in summer, accounting for 65% of the annual precipitation. The annual precipitation changes greatly, which is prone to drought and flood disasters.
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