In general, the survival rate of natural crabs cultivated is about 25 percent. Recently, the survival rate of the artificially cultivated crabs in Shijianzhong, Cixi, Ningbo, Ningbo, is as high as 80%. So what's wrong with him? Artificially cultivated these young crabs is Cai Zhili, the owner of the Danyan blue crab nursery boutique park in Xianxiang Town, Cixi City. Under the guidance of the city’s aquatic experts, after four years of research and improvement, Lao Cai bred more than 1 million green crabs in a pond of 3,200 square meters at the end of June this year. Accepted by the municipal department, found that the survival rate of crab seed exceeded 7% for the first time, which is the first case in the national crab breeding market. “The success of artificial blue crab breeding laid the foundation for the industrialization of blue crabs,†said Jin Zhong, a researcher at the Ningbo Institute of Marine Fisheries. For a long time, due to the difficulty of artificial breeding, crab crabs in many parts of the country rely on wild fishing. In the past 10 years, there have been fewer and fewer natural seedlings, and the scale of Ningbo's green crab has dropped from nearly 90,000 mu to 40,000 mu. Cai Zhili's successful artificial blue crab breeding means that the crab breeding industry will undergo tremendous changes. Cai Zhili, who has been engaged in aquaculture for 20 years, once cultivated river crab seedlings and shuttle crab seedlings. However, in a few years, the market became saturated. Lao Cai realized that engaging in aquatic products must run ahead to taste the sweetness. In 2010, Cai Zhili tried to cultivate blue crabs. However, as early as 16 years ago, Ningbo City had introduced a policy of “subsidizing with awards†to encourage aquaculture farmers to cultivate blue crabs, but no one succeeded. Although the blue crab artificial nursery has no successful experience in the country or even abroad, Cai Zhili has taken this route. In 2011, there were 505,000 green crabs in 4 test ponds; in 2012, only 300,000 out of 8 test ponds were affected by the weather; in 2013, there were still only 300,000 in 8 test ponds. In these three years, the survival rate of blue crabs in various ponds is also unstable. "Live feeds should be sufficient and water quality should be clean." After accumulating three years of experience, Lao Cai added an overhead facility worth 200,000 yuan last year to separate feces from water. In addition, he also went to Ninghai, Sanmen, Xiamen, and other places to collect high-quality crab species, and increase the amount of eggs they can hold. Last year, Lao Cai's project was listed in the city's key seedling technology project and also supported by district-level science and technology projects. In June of this year, Cai Zhili produced more than 1 million crabs in 8 ponds. Unlike previous years, this year's crabs produced more balanced crabs and passed city acceptance. City aquatic experts agreed that Cai Zhili has overcome the problem of ecological breeding of artificial crab ponds in the country. According to the comparative experiment, the nursery ponds, such as catching on greenhouses, have good insulation conditions, and the survival rate of crab seedlings is high. "With the mastery of the core technology, it is expected that 3 million crabs will be successfully bred next year." Earloop Kn95 Face Mask,Kn95 Fold Flat Face Mask,Kn95 Filters Respirator,Kn95 Protective Face Mask Jiangmen anjian biotechnology co. LTD , https://www.anjianmask.com