Farmers in Dongkan Town, Binhai County, Jiangsu Province, built cement ponds in plastic greenhouses each winter to short-term temporary conservation. During New Year's Day and Spring Festival, the price per 500 grams is about 10 yuan higher than usual, and the benefits are considerable. This high-efficiency culture technology is introduced as follows: First, build the pool requirements according to their respective conditions, the size of a plastic greenhouse can be. Cement pool area is suitable for 50~100 square meters. The rearing pond is built on the ground, underground and semi-subterranean types, and has an inlet and outlet. The pool depth is 1.2~1.5 meters. The water outlet is set at a distance of 30 cm from the bottom of the pool and the anti-escape facilities are installed. The water depth is 0.8~1. Meter. Before releasing, add 20 centimeters of thick mud beforehand, and clean and disinfect the rearing pond 10 to 15 days before stocking. After 7 days, add 20-30 cm of water, add 0.3-0.5 kg of livestock manure per square meter, and add water to 40-50 cm. A few days later, when the water turns yellow-green, the mud is preserved when the transparency is 15 to 25 centimeters. Second, greenhouses can be constructed in accordance with the method of erecting vegetable greenhouses. There are single-layer or double-layer structures. Bamboo canopies can be used as materials. Steel canopy structures are available, and suitable straw mats or straw curtains are prepared. Winter cold weather covers the plastic greenhouses. Insulation. Three, mud loach stocking mud loach before stocking is usually used 3% to 5% of salt water bath 3 to 5 minutes to prevent hydromycosis, elimination of body surface parasites. The density is about 25 kilograms per cubic meter of water body. With the increase of stocking, the weight of the fish is increased and the pool water can be increased to 0.8-1 meter. Those who have conditions can maintain micro-flowing water in the pool and have better results. When the mud enters the pool, it is also necessary to prevent the temperature difference from being too large, so as to avoid causing death from mud and cold. Fourth, feeding and management loach is omnivorous, natural foods are small crustaceans, aquatic insects, snails, cockroaches, animal organs, algae, rice bran, bean dregs and so on. When feeding, pay attention to the proper mix of animal and vegetable diets, and feed should be set to four. Water temperature above 30 °C or below 10 °C can not cast. In rearing, pay attention to fertilization. Sprinkle manure once every 4-5 days to Dianchi Lake, 50-100 grams per square meter, keep the transparency of water body 15-25cm, change water in time, and change the water every week in Dianchi Lake. Times, change the water 30 centimeters each time. If there are microfluidic conditions in the pool, it is not necessary to constantly change the water, but to prevent deterioration of water quality. Sun pools should always be filled with tap water to ensure sufficient water supply. V. Management of Greenhouses In accordance with the requirements of agricultural technology, greenhouses are managed with reference to the management points of vegetable greenhouses. A portable or detachable lock with a pivoted or sliding shackle that can be passed through a link, ring, staple, or the like. There are many kinds of padlocks, such as key padlock, password padlock, Fingerprint Padlock, etc.It can also be different materials, pure copper padlock, zinc alloy, etc. Acceptable customization. Durable Brass Padlock,Control Key Lock Core,Padlocks With Control Key,Locks Keys Padlock ANDJA TRADING PET. LTD. , https://www.lock-cylinder.com