There's been a great harvest of porridge crabs
A year ago, dao du zhifang introduced the shuttle crab protection device to the farm pond: is it worth it if the purchase of the device is costly and uncertain? But now ask him, he won't hesitate to say, "it's too much!"
In 2017, do zhifang contracted 50 acre farm ponds, producing 4,000 kg of crabs and producing 1. 1 million yuan. The average acre production reached 80 kg, twice as high as the average farmer. “the production and value of this production last year have benefited, on the one hand, from the high-yielding production techniques of the hula crab pond, which was developed by the zhejiang marine university, and, on the other hand, from the marketing industry, which sold up to $150 per pound, which is considerably higher than in previous years.”。
In a well-integrated farm pond on the island, du zhifang contracted a well-known farm pond, with a plastic basket full of membranes. "don't underestimate these plastic baskets, they're the anti-pasture devices of the shuttle crabs." du zhifang told reporters that the shuttle crabs are growing up many times, and that they are soft and uncompressed, and then they become “food” for other shuttle crabs, “these plastic baskets can serve as a shield, and the hull crabs themselves can climb into the basket, take off their shells and drill out, thus avoiding being eaten, thereby increasing their productivity.” according to statistics, do zhifang has placed around 6,000 plastic baskets in 50 acres of farm ponds。
The plastic basket in the farm pond
Pork crabs are the dominant species of seawater farming in the city, with a total of nearly 20,000 acres in the city. However, due to the relative lag in farming patterns and supporting technologies, their average survival rate is currently around 2 per cent from seeding to breeding, with an average acre production of less than 40 kg. In addition to the quality of seedlings, the supply of bait and diseases, the most important cause of the low survival rate of the porcupine crabs is the inter-personal killing of each other. Reducing and controlling fratricidal activity is therefore key to achieving high productivity in shuttle crab farming。
After years of research, the team of professor xu wenjun at the aquaculture school of the zhejiang university developed an anti-disabling device that could effectively reduce the machinity of the zhejiang pond and increase the productivity of farming. On this basis, a new model for high-yielding production of ponds and crabs has been established through the integration of key common technologies such as high-quality seedlings, oxygen-added technologies, specialized complementary feed, and farming environment regulation and integrated disease prevention。
Crabs with harvests
Du zhifang made a cut: more than 50 acres of cognac crab farm ponds, including japanese shrimp, had earned only $200,000 to $300,000 in the previous year, more than $1 million in 2017 and many times more. “it's thanks to the new model of new technologies for the protection of crabs from disability, developed by haidar! The killing of crabs has been significantly reduced, and the rate of cultivation has increased considerably.” du zhifang is excited to say。
Now, the new year of shuttle crab farming is about to begin. A few days ago, du zhifang had just transported some 4,000 plastic baskets from shen's home to mounting island, and a number of farmers had come to the house to “take lessons”. It is understood that 95 per cent of the farmers in the village of mount east bay, where du zhifang is located this year, will adopt this new technology。
