46results about How to "Improve the survival rate of overwintering" patented technology

The present invention discloses a method for artificially domesticating wasps. The method for artificially domesticating the wasps comprises the steps of: artificial breed selection, artificial rejuvenation, artificially assisted mating, queen bee domestication, overwintering preparation, overwintering artificial rejuvenation, artificial nesting, natural stocking and the like. According to the method for artificially domesticating the wasps, the physical condition of female bees before wintering is improved, so that the problem that the queen bee is likely to be frozen to death during wintering in a wasp artificial domesticating process is solved and thus a large number of high quality queen bees are provided for artificially raising wasps in large scale.

The invention discloses a technology for ecological breeding of large Chinese mitten crabs (female crabs 150g and male crabs more than 200g) in a pond. The method comprises the steps of (1) selection and transportation of the large parent crabs, (2) mating of the parent crabs, (3) over-wintering fatting and management of the parent crabs, (4) catching and temporary breeding of egg-carrying crabs, (5) cage hanging and distribution of the egg-carrying crabs, (6) food organism culture, (7) zoea cultivation, (8) megalopa desalting. The technology for ecological breeding of the large Chinese mitten crabs in the pond is developed for emphasizing to improve the over-wintering survival rate and the egg-carrying rate of the large parent crabs and the survival rate of the egg-carrying crabs according to features of reproductive biology and reproductive ecology of the Chinese mitten crabs on a basis of in-pond ecological breeding work of large parent crabs. Technical practices of an inventor for nearly a year proves that unprecedented success on the in-pond ecological breeding of the large parent crabs is achieved, an in-pond ecological breeding technical system of the large parent crabs is established, and profound influence is made in the Chinese mitten crab breeding industry of our country.

The invention discloses an indoor raising and overwintering method for shrimp and crab parents, which comprises the following steps: mixing fresh water with brine, and leading the salinity to achieve 22-28 per mill; filling air, increasing oxygen and regulating temperature, leading the water temperature of a reservoir to be higher than the overwintering water temperature by 0.5 DEG C, and reducing the temperature to 9-12 DEG C; leading the parents to enter into a room; carrying out daily management; and draining water, and recycling the overwintering water after draining for saving water resources. The method can not only achieve the purposes of reducing the overwintering cost and improving the overwintering survival rate, but also achieve the desired effects of environmental protection, energy conservation and disease prevention.

The invention provides a low-salt overwintering and breeding method of portunus trituberculatus. The method comprises the following steps that: manual seed selection parent crabs without any diseases are selected; low-salt seawater is used for carrying out parent crab overwintering and juvenile crab breeding, so as to avoid causing diseases and vertical disease transmission in an overwintering and breeding period; during the overwintering period, underground bittern and fresh water are used for mixing and preparing low-salt seawater for the overwintering, so as to cut off a transmission path of the diseases; baits are reasonably matched, and have complete nutrition, so as to accelerate the healthy development of parent crab embryos; the seawater with the 2 per mill salt degree is adopted to carry out juvenile crab breeding to simulate a natural environment which is suitable for egg laying of the parent crabs and juvenile crab growth, so that the yield and the quality of the juvenile crabs are improved; and the salt degree and the temperature of the sweater in a breeding pool are adjusted to be same as those of an outdoor cultivating pool at the time of 24 hours before the juvenile crabs are output, so as to avoid causing stress reaction due to that the environment is greatly changed. According to the low-salt overwintering and breeding method of the portunus trituberculatus, the overwintering survival rate and the juvenile crab yield of the portunus trituberculatus are improved and the outdoor cultivation survival rate is greatly improved; and the low-salt overwintering and breeding method of the portunus trituberculatus can be widely applied to sea-near sea areas and river mouth regions and has the obvious economic benefits.

The invention discloses a method for cultivating cold-resistance gift tilapia. The method adopts the establishment of a plurality of pedigrees and selects a pedigree of which an average cold-resistance variance is higher than a total variance as a primitive pedigree through a cold-resistance test. In the May of the following year, a female and a male of the primitive pedigree mate for propagation. After emergency from eggs, fish fry passes through growth selection and cold-resistance selection as well as a growth comparison test to select a pedigree growing faster than a reference gift tilapia and having a cold-resistance variance higher than a cold-resistance total variance of the time as the first pedigree. The selection and the test are both carried in a mesh box. The first pedigree is protected as parent stock in winter and passes the selection of a second pedigree in the same way in the following year. Researches show that the total variance of the cold-resistance selection is obviously higher year by year. Through selection generation by generation, gift tilapia which grows fast and is fully improved in cold resistance can be obtained.

The invention discloses a pond bottom eyebright planting crawfish and fingerling continuous culture method.The pond bottom eyebright planting crawfish and fingerling continuous culture method is characterized by comprising the following steps that 1, pond conditions are selected; 2, a pond is transformed; 3, the pond is prepared; 4, crawfish fry are stocked; 5, daily management of crawfishes is carried out; 6, the crawfishes are caught; 7, eyebright is immersed; 8, fingerling is stocked; 9, daily management of fish culture is carried out; 10, the fishes are caught.According to the method, the space-time resources of the pond are fully utilized, the eyebright is placed in the pond where only fingerling is cultured, feed crops are synthesized through solar energy to be eaten by the crawfishes and the fishes, one season of crawfishes is added on the premise of not influencing the yield of the fingerling, and the aim of increasing income and benefits is achieved.

The invention relates to a wasp breeding method. The wasp breeding method comprises the steps of collecting and domesticating, overwintering management, rejuvenation management after overwintering, artificial nesting and natural stocking. According to the wasp breeding method, food and nutrition syrup are added in each stage for feeding, the growth and development of a bee colony can be promoted,the disease resistance of the bee colony can be improved, the functions of adjusting body metabolism, supplementing nutrition and protecting health can be achieved, the overwintering survival rate ofa queen bee is further increased, the amount of honey eaten by bees is reduced, the physique of the queen bee obtained after overwintering can quickly recover, and nesting and oviposition can be carried out as soon as possible. By means of the method, reasonable large-scale breeding of bees can be achieved, the problem that the number of wild wasp populations is sharply reduced can be solved by breeding wasps, the yield of forestry, crops and fruits is increased while the species are protected, and the method has high direct economic benefits and wide market prospects.

The invention relates to a protective overwintering method for Fujian angiopteris lygodiifolia rosenst in cold districts in winter. The method comprises the following steps of: clearing withered branches and leaves around the Fujian angiopteris lygodiifolia rosenst when the temperature is reduced to 3 DEG C below zero in winter, sterilizing the rosenst and the surrounding soil thereof, and covering the rosenst by using a prepared mulch; and performing winter management, clearing the mulch on the rosenst when the temperature is stabilized at 5 DEG C below zero in next spring, so that the rosenst is germinated and grown and can overwinter safely by a covering protection method. The method can ensure that the Fujian angiopteris lygodiifolia rosenst can overwinter safely and can normally germinate and grow in next spring, the grown quantity is high, and the plants are grown robustly. The preparation of the coverage matrix is simple; and the operating method is simple, convenient, feasible and strong in operability, has the characteristics of low investment, high overwintering survival rate, early plant germination and high growth quantity in next year, and is a reliable mode of safe overwintering after the Fujian angiopteris lygodiifolia rosenst is migrated northwards. Meanwhile, the method provides reference for open field culture and safe overwintering after similar large tropical ferns are migrated northwards, and has high popularization value.

The invention discloses a method for improving the overwintering survival rate of limnodrilus hoffmeisteri. The method includes the following steps: at the beginning of December, draining a limnodrilus hoffmeisteri breeding pond completely, pouring a layer of pig manure on the breeding pond, and according to the dry condition of the surface soil of the breeding pond, injecting pollution-free river water every 7-10 days. The nutrition requirement, water quality requirement and wetting-and-drying alternation condition of the limnodrilus hoffmeisteri in the overwintering period is considered, and the method has the advantages of being convenient to operate, low in labor intensity and cost and the like.

The invention relates to a method of controlling a big-standard female crab egg carrying amount of a Chinese mitten crab. The method includes selecting parents according to a GB/T19783-2005 standard of the Chinese mitten crab in the first ten-day period of November, marking the parents, raising female crabs and male crabs separately and conducting strengthening cultivation; matching the parent crabs according to a requirement of breeding in the last ten-day period of November, for example, a parent crab male and female ratio of a full sibs family is one to one, and the parent crab male and female ratio of a half-sibs family is two or three to one, arranging one male crab into each group, putting one group of crabs into one specially-made mating cage; sinking the in-proportion assembled parent crab mating cage into an outdoor soil pool with temperature of six to eight DEG C, salinity of 20 per thousand and water depth of one meter, setting three methods including that the bottom of the mating cage does not contact the bottom of the soil pool and suspends in pool water, the bottom of the mating cage contacts the bottom of the soil pool and the bottom of the mating cage is inserted into the bottom of the pool by five centimeters, and conducting directional mating. Small, medium and big breeding requirements of big-standard female crab egg carrying amount are achieved.

The invention discloses a cherax quadricarinatus industrial early-breeding method and system. The method is characterized by including: setting small net cages for temporary rearing by adopting tandemgreenhouse ponds, so that cherax quadricarinatus can effectively adapt to water quality conditions of a local water source before entering a heating greenhouse; slightly and naturally increasing thetemperature in an early stage, and performing male and female partitioned breeding in the same pond after entering the greenhouse; when preset control conditions are reached, opening a partition device to enable complete mating of male and female cherax quadricarinatus and oogenesis; after mating of 70-80% of female cherax quadricarinatus is completed, taking out 80% of male cherax quadricarinatus, breeding in a special pond, and waiting for next mating; after separation of well developed juvenile cherax quadricarinatus from maternal bodies, falling from bottom holes, driving through a retaining plate, and bringing out along with water flow. Outer tandem greenhouses are used for drainage, water storage and purification and available for planting of water purification plants; in mass emergence in spring, effective utilization in pond large-scale fry culture areas can be realized, a culture site is expanded, and energy consumption is reduced. Compared with traditional greenhouse artificial breeding, the method and the system have the advantage that emergence time is 1 month ahead of time.

The invention relates to a method for cultivating wasps and belongs to the technical field of cultivation. The method for cultivating the wasps comprises the steps of collection and domestication, overwintering, rejuvenation after overwintering, artificial nesting and natural stocking. By strengthening the bodies of the wasps before overwintering, the problem that a queen wasp dies easily during overwintering in the artificial domestication process is solved, the overwintering survival rate of the queen wasp is improved to over 90% from 10% of a natural state; the queen wasp's health recovers quickly after overwintering, and the queen wasp can nest and lay eggs as quickly as possible.

The invention relates to a cotton field transplantation overwintering method. The cotton field transplantation overwintering method comprises the following steps that (1) cotton plants are trimmed before transplantation at the beginning of October, and a small part of main stems and lateral branches are only reserved on the ground part to reduce nutrient consumption during the period of transplantation; (2) the soil relative humidity is between 50% and 60% between the midmonth of the October and the beginning of November, and flowerpots are adopted to arrange the overwintering cotton plants into a greenhouse covered with thin films in a potted plant mode to keep a root system to be complete; and (3) soil moist is kept after transplantation, growth of the cotton root system is facilitated,the temperature and humidity of the greenhouse are controlled, and safe overwintering of cotton is facilitated. According to the cotton field transplantation overwintering method, the survival rate ofcotton field transplantation is increased more than 90%, and in a general plastic thin film greenhouse, the survival rate of overwintering is increased more than 90%.

The invention provides a breeding method for improving the commercial specification and the commercial rate of freshwater shrimps. The breeding method comprises the following steps: clearing a pond, and planting cold-resistant waterweeds; putting young shrimps bred in winter and spring; catching the freshwater shrimps for marketing for the first time; catching the freshwater shrimps for marketing for the second time; clearing the pond, and planting high-temperature-resistant waterweeds; putting young shrimps bred in summer; replacing bottom-layer water of the pond, and spreading quicklime, a bottom-sediment improver and an organic acid detoxifying agent into the pond; when the content of dissolved oxygen of the pond is 3 mg/L or less, introducing oxygen into the pond; and alternately applying the bottom-sediment improver and the organic acid detoxifying agent, and catching all the freshwater shrimps in the pond for marketing. The breeding method has the following beneficial technical effects: through technological innovation in the aspects of control of water quality, a stocking manner of the young shrimps, planting of the waterweeds, feed selection and feeding, catching, etc., a proper shrimp load density of the pond is maintained, and the survival rate of the freshwater shrimps is improved. Through technical measures of the invention, a unit net profit reaches 5000 to 8000 yuan which is 2 to 4 times of the unit net profit of traditional breeding.

The invention discloses a rachycentron canadum overwintering compound feed and a preparation method thereof. The feed comprises the following components in percentage by mass: 24-26% of fish meal, 17-21% of euphausia meal, 2-4% of wheat protein powder, 10-15% of sticky rice, 8-12% of flour, 1.2% of monocalcium phosphate, 4% of mixed oil, 10% of soy protein concentrate, 3-5% of peanut cake, 6-8% of beer yeast, 1.2% of choline chloride, 2% of minerals, 1.8% of vitamin premix and 0.2% of a mildew preventive. Compared with the prior art, the rachycentron canadum overwintering compound feed and the preparation method thereof have the beneficial effects that firstly, sticky rice is used for replacing flour partially and is added into the rachycentron canadum feed, so that the fat content of a rachycentron canadum body can be improved obviously, and the anti-freezing capability is improved; secondly, fish oil, soybean oil and inkfish oil form mixed oil according to a certain ratio, so that the assimilation capability to grease by rachycentron canadum can be improved; thirdly, the digestive ability of rachycentron canadum can be improved, the intestinal health is protected, and the overwintering survival rate is improved.

The invention discloses a portable high-pressure bottom-layer nanometer micropore aeration aerator. A power supply, a timer, an air compressor, a stainless steel corrugated pipe, a rubber pipe and anaeration disc of the aerator are sequentially connected, the air compressor is connected with the stainless steel corrugated pipe through a quick connector, a plurality of four-way joints are mountedon the aeration disc, the rubber pipe is connected with the four-way joint on the outermost side of the aeration disc, a check valve is mounted at the joint of the aeration disc and the rubber pipe, the aeration disc is formed by fixing a plurality of concentric circular pipes, a plurality of concentric circular aeration pipes of the aeration disc communicate with each other through the four-way joints, and a plurality of aeration micropores are formed in each aeration pipe. The portable high-pressure bottom-layer nanometer micropore aeration aerator solves the technical problems that an existing aerator is large in power consumption, inconvenient to operate, poor in aeration oxygenation effect and the like, fishes lose weight, are frostbitten and even die due to the fact that the water temperature is lowered in the oxygenation process, and the portable high-pressure bottom-layer nanometer micropore aeration aerator has the functions of oxygenation, aeration, detoxification, deicing and promotion of water body substance circulation.

The invention provides a greenhouse overwintering method for artificially-bred poecilobdella manillensis lesson. The method includes steps: 1) digging a pit in a greenhouse, arranging an overwinteringcontainer matched with the pit in the pit, and laying soil at the bottom of the overwintering container to form a slope at the bottom of the overwintering container; 2) adding water to the bottom ofthe overwintering container to keep the soil wet, and releasing poecilobdella manillensis lesson to the soil surface to allow the poecilobdella manillensis lesson to freely enter the soil; 3) in an overwintering period, controlling the temperature of the greenhouse and the temperature of the soil, and taking out poecilobdella manillensis lesson after overwintering is completed. The method has advantages of easiness in operation, sharp reduction of labor, high overwintering survival rate and the like.