102results about How to "Improve the quality of breeding" patented technology

The invention discloses a method for improving breeding quality of dalbergia odorifera cuttings. In a period from the last ten-day of February to the last ten-day of March, a large hole is dug for an annual-growth seedling, organic fertilizer serving as base fertilizer is applied to the seedling, the seedling is planted to be a stock plant, topdressing is performed, lateral branches are reasonably trimmed, stems are cut and sprouting is promoted in a period from the last ten-day of February to the last ten-day of March of a second year, the lateral branches and sprouted branches are appropriately trimmed, two or three thick, strong and evenly-distributed sprouted branches are retained, the topdressing is performed in July to August, a main stem and the sprouted branches are collected and serve as the cuttings in the period from the last ten-day of February to the last ten-day of March, the cuttings are treated through medicament and then are inserted into a non-woven fabric mesh bag provided with a matrix, a plastic film and a shading mesh are covered for seedling cultivation, and high-quality dalbergia odorifera cuttings are obtained. By means of the method for improving the breeding quality of the dalbergia odorifera cuttings, the stock plant is convenient to manage, the quality of cutting strips is easy to control, propagation coefficient is large, cottage time is strictly mastered, the cuttings are thick and strong and good in quality, the rooting time and out-planting time are effectively shortened, the cottage survival rate reaches to 80.3-92.5%, and the economic benefit is good.

The invention relates to the technical field of internet fish culture, and discloses an internet-based automatic feeding device for fish culture. The automatic feeding device comprises a fixed seat, wherein stand columns are uniformly arranged at the upper end of the fixed seat; a material storage cylinder is arranged at the upper end of each stand column; a partition plate is arranged in the middle of an inner cavity of the material storage cylinder; a material discharging plate is rotationally connected below the partition plate in the middle of the inner cavity of the material storage cylinder; a driving tooth rod is rotationally connected between the material storage cylinder and the fixed seat; and the upper part of the driving tooth rod is fixedly connected with a wedge-shaped block.According to the internet-based automatic feeding device for fish culture, the driving tooth rod drives the wedge-shaped block to open the material discharging plate intermittently and to drive an air pressure plate to rotate intermittently, so that the air outlet direction is changed; and by virtue of match with rotation of a transmission tooth rod, a sliding block can perform reciprocating motion, and the sliding block enables a guide plate to change a pitch angle through a connecting rod, so that large-range inner and outer feed putting uniformity is realized and the fish breeding qualityis improved.

The invention belongs to the technical field of biology, particularly relates to a peony retarding culturing method. The peony retarding culturing method includes the steps of (1) selecting a peony variety suitable for retarding culturing; (2) refrigerating storage in basins so as to protect a new root and improve nutrient absorption efficiency; (3) daubing gibberellin on a peony seedling once every day so as to increase flowering rate; (4) after leaves grow on the peony plant, spraying monopotassium phosphate with mass concentration at 0.1% on leaf surfaces once every two days, spraying urea with the mass concentration at 0.1% on the leaf surfaces once every five days, and at beginning of a budding stage, fertilizing compound fertilizer solution at the mass concentration at 0.2% once every week. By creatively combining the above four steps, flowers of the peony can be large in size, gorgeous in color and good in viewing effect, quality of the peony obtained from retarding culturing is improved, and industrialization development of the peony is facilitated.

The invention discloses a layer incubation period intensive control system and a control method. The system comprises a master control unit. The master control unit is respectively connected with a ventilation module, a temperature adjustment module, a humidity adjustment module, and a light adjustment module. The ventilation module comprises an ammonia sensor. The ammonia sensor is connected with a ventilator via a ventilation control unit. The temperature adjustment module comprises a temperature sensor. The temperature sensor and a temperature control unit are connected. The temperature control unit is respectively connected with a heating device and a cooling device. The humidity adjustment module comprises a humidity sensor. The humidity sensor and a humidity control unit are connected. The humidity control unit is respectively connected with a sprayer and a moisture removing fan. The light adjustment module comprises a light control unit. The light control unit is connected with a fluorescent lamp. The system is high in degree of automation. Based on the above system and the above method, the environment inside a henhouse can be automatically controlled. Meanwhile, the disinfecting operation is conducted automatically, and the workload is reduced. The scientific feeding and managing process is facilitated.

The invention relates to a method of braiding, planting and cultivating multiple plants of photinia fraseri into a stereoscopic landscape shape, belonging to a tree cultivation technique. The invention aims to solve the problems that the cultivation quality is influenced slightly while the cultivation success rate is severely reduced by giving up halfway and keeping all the previous effects wasted due to broken or dead plants subjected to the planting severe factors as the traditional method adopts the single-seedling planting, the production cost is high as the cultivation period is as long as 3-5 years, the optimum time to market is missed so as to cause low market price and reduced economic benefits. The method is characterized in that at least two seedlings with the height of over 30cm are braided into a bundle for planting and cultivating, and the seedlings are cultivated, pruned and braided into a bundle again for 12 months to form the stereoscopic landscape shape finished seedling according to the design requirement. After implementation, compared with the prior art, the method has the advantages that the stress resistance of the stereoscopic landscape shape is enhanced, therefore, the cultivation success rate can reach up to over 99%, the plant growth is doubled, and the cultivation time is greatly shortened to 1-2 years.

The invention discloses an intelligent greenhouse monitoring and control system and method. The intelligent greenhouse monitoring and control system comprises a main controller and a background monitoring center. The intelligent greenhouse monitoring and control system adopts a sensor technology to carry out automatic control on the soil and air environment in the greenhouse through the backgroundmonitoring center, and automatically controls a drip irrigation system, a soil loosening and liquid injection device and a fan to carry out soil loosening, nutrient solution or clear water injectionand greenhouse ventilation through the main controller, thereby greatly improving the accuracy in the cultivation process of saffron crocus or stigma croci planted in the greenhouse. The soil loosening and liquid injection device is formed by the combined structural setting of a first driving mechanism, a second driving mechanism, a third driving mechanism, a lifting mechanism and a soil looseningand liquid injection rod, thereby not only greatly improving the accuracy and positioning function of the soil loosening and liquid injection device in the working process, but also greatly improvingthe overall working stability and reliability of the system. The system is reasonable in design, has high control accuracy and high use values, and is suitable for popularization and application.

The invention relates to an inoculation method for large-section ductile iron, which can accurately change the adding speed of inoculant according to different flow rates of molten iron during pouring. The method can be used for producing the large-section ductile iron with high performance requirement and capable of resisting low-temperature shock. The inoculation method for the large-section ductile iron is characterized in that the molten iron is poured into a straight pouring channel from a runner box, an automatic feeding device adds the inoculant into the straight pouring channel through a pipeline at the same time of pouring, the inoculant and the molten iron are in a half filling state in the straight pouring channel, mixed and then poured into a die cavity, and the automatic feeding device automatically adjusts the adding speed of the inoculant according to the flow change of the molten iron.

The present invention belongs to the field of forest apparatus technology. The sapling nursing apparatus with solar energy photovoltaic generating system consists of mainly an independent solar energy photovoltaic generating system and sapling nursing device connected together. The independent solar energy photovoltaic generating system consists of square solar cell array, controller, accumulator and inverter connected through wires. The sapling nursing device is a sealed sapling nursing box with temperature controller, humidity controller, sprayer and lighting unit as well as sapling nursing medium for sapling to grow on. The present invention has reasonable structure and convenient moving, and the independent solar energy photovoltaic generating system converts solar energy into electric energy to power the electric appliance inside the sealed sapling nursing box so as to provide sapling with excellent growth environment.

The invention provides a cultivation box for needle mushroom cultivation based on an optical flow method. The box comprises a box body, a placing frame and a plurality of needle mushroom strains, wherein the box body is of a cylindrical structure; the placing frame is arranged in the box body; a plurality of the needle mushroom strains are uniformly arranged on the placing frame; the placing frameis of an annular structure, a rotary disc is arranged on the bottom surface of the box body; the placing frame is arranged on the rotary disc; the central axes of the placing frame and the rotary disc coincide with the central axis of the box body; and the rotary disc is used for driving the placing frame to rotate along the central axis of the box body. By arranging an image collector, image data of the needle mushroom strains are collected, and an optical flow image is generated according to the image data; a control unit judges the growth stage of the needle mushroom strains in real time,and controls the temperature in the cultivation box according to the growth stage of the needle mushroom strains, so as to enable the needle mushroom strains to be at the most favorable growth temperature in real time, and thus the growth efficiency of needle mushroom is improved, and the cultivation quality of the needle mushroom is improved.

The invention relates to a grape breeding method, in particular to a double-cropping grape breeding method. The method comprises the following steps: S1, selecting a variety with high flower bud differentiation capability as a female parent variety, and cultivating the variety in a greenhouse; S2, by utilizing a one-year double-cropping cultivation technology, according to the specific time required by full ripening of secondary fruits of the female parent variety, taking twice flowering as a target, setting and controlling the temperature rising speed of the greenhouse, and arranging cultivation management of accelerating germination, promoting flowering, protecting fruits and promoting secondary flowering in the greenhouse; and S3, one week before primary blooming and secondary blooming,bagging partial flower spikes, conducting emasculation manually three days before blooming, taking the inflorescence which is not bagged as a reference, and artificially pollinating the inflorescenceat 18-28 DEG C in the morning when the inflorescence enters an initial blooming period. According to the method, one-year one-breeding is changed into double-cropping, so that the breeding efficiencyis greatly improved, and the method has very important significance for breeding. Pollination hybridization among a large number of parents can be carried out to obtain more hybridization samples, sothat an ideal hybridization variety can be found more quickly.

The invention provides a rice carbon-based seedling-raising substrate and a preparation method thereof. The substrate comprises the following components in percentages: 5-12% of a cake fertilizer, 0.2-1% of an inorganic compound fertilizer, 5-15% of diatom mud, 5-8% of tailings, and the balance of biochar, wherein the biochar is prepared by adopting rice hulls, straw, sugarcane stalks and soybeanhulls as raw materials. According to the method provided by the invention, through a rational raw material ratio and process improvement, the water retention and permeability of the seedling raising substrate are effectively improved, the nutrient content is high, the absorbability is good, the dry matter accumulation is strong, a survival rate and growth rate of seedlings are greatly improved, the seedlings are robust and tidy and have good root twisting performance, and the comprehensive cultivation quality is high.

The invention relates to a stream inoculation apparatus with dual feed tubes, belonging to the mechanical manufacture field and comprising a host cabinet, a guide discharge hopper, a feed tube component, a hopper pressure-limiting plate component, a feed level sensor, an electromagnetic vibration feeder, a compression spring shock absorption support component, a micro flow gauge, a reversing slide plate assembly, two V-shaped discharge hoppers, two three-way feed tube components, a low-pressure air path component and a control cabinet. The invention not only realizes the online weighing inspection and control and the closed-loop feedback regulation in the stream inoculation feeding process and improves the inoculation feeding precision, but also meets the requirements of casting the stream inoculation at two work stations on a converter-type casting machine with dual work stations. The invention improves the current situation by using one stream inoculation apparatus with dual feed tubes to replace two stream inoculation apparatuses with single feed tube, so the purchase cost on equipment is reduced, and the facility utilization rate is improved.

The invention relates to a garden irrigation device comprising a water supply device. The water supply device is connected with a water distribution pipe, a first water guide pipe, a second water guide pipe and a third water guide pipe are arranged on the water distribution pipe, and the first water guide pipe, the second water guide pipe and the third water guide pipe are sequentially arranged along the length direction of the water distribution pipe. A micro-spray device used for irrigating herbaceous plants is connected on the first water guide pipe, a drip irrigation device used for irrigating trees and shrubs is connected on the second water guide pipe, and the third water guide pipe is connected with a water flow regulation device through a four-way pipe. The garden irrigation device has the advantages that the micro spray device and the irrigation device are of an integrated design, few pipelines are used, layout is facilitated, landscape effect is improved, usage functions are increased, growth quality of gardens is guaranteed, and water is saved.

Disclosed is a supplementing lighting method for improving cultivating quality of peonies for the Lunar New Year. The supplementing lighting method includes that different light rays are adopted in different growing stages of the peonies for supplementing lighting; for the germination stage, composite light with lighting intensity of 150-180Lux and formed by blue light and yellow light according to a proportion of 3-1:2-1 is adopted; for the squaring stage, composite light with lighting intensity of 160-210Lux and formed by red light and blue light according to a proportion of 3-1:2-1 is adopted; for the small wind bell stage, composite light with lighting intensity of 170-200Lux and formed by red light, blue light and yellow light according to a proportion of 3-1:2-1:2-1; for the big wind bell stage, composite light with lighting intensity of 170-200Lux and formed by red light, blue light and yellow light according to a proportion of 3-1:2-1:2-1; for the garden-peach color transparency stage, composite light with lighting intensity of 170-200Lux and formed by red light, blue light and yellow light according to a proportion of 3-1:2-1:2-1; for a week before the flowering stage, composite light of red light, blue light and yellow light according to a proportion of 3-1:2-1:2-1 is adopted; for a week after flowering, composite light of red light and blue light according to a proportion of 3-1:2-1 is adopted. By the supplementary lighting method, influences are generated on biological characteristics of peony plants, and nutritional growing and flowering quality of the peonies for the Lunar New Year is improved remarkably.

The invention provides a method for regulating natural spawning of parent fish of seriola aureovittata and belongs to the field of aquaculture. The method comprises the steps of parent fish selection,parent fish rearing, and reproductive regulation for natural spawning, wherein the step of reproductive regulation for natural spawning is regulating gonadal maturation of the parent fish and carrying out natural spawning through regulating the conditions including water temperature, a photoperiod, water flow and nutrition for parent fish rearing. According to the method provided by the invention, natural spawning of the parent fish in a culture pond can be achieved in a regulation period of 60-77 days and high-quality fertilized eggs are obtained; the spawning period can be advanced by 1-2 months in comparison with that in the natural world, and the spawning period can last up to 45-60 days; the fertilization rate reaches 90% or above; and the hatching rate reaches 70% or above.

The invention discloses a novel taxus chinensis seedling cultivation greenhouse which comprises a greenhouse, steel tubes, electronic nozzles, a cottage pond, a temperature sensor, a humidity sensor, an electromagnetic switch, a gas cylinder, a fan, an electronic window, a controller and an atmospheric pressure sensor, wherein the cottage pond takes the shape of a trough, is constructed by cement and is arranged inside the greenhouse; the gas cylinder is arranged inside the greenhouse; the electromagnetic switch is arranged at the opening of the gas cylinder; the fan is mounted on the inner wall of the greenhouse; the electronic window is arranged in the wall body of the greenhouse; the controller and the atmospheric pressure sensor are arranged inside the greenhouse; the electronic nozzle, the temperature sneosr, the humidity sensor, the electromagnetic switch, the fan, the electronic window and the atmospheric pressure sensor are connected with the controller through cables. As the atmospheric pressure inside the novel taxus chinensis seedling cultivation greenhouse is monitored, the air pressure inside the greenhouse is comprehensively regulated, and climate environment factors are provided for taxus chinensis seedlings in the cultivation process, the survival rate of the cultivated taxus chinensis seedlings is increased, the cultivated taxus chinensis seedlings are high in vitality, and the cultivation quality of the taxus chinensis seedlings is improved.

The invention discloses an intra-system temperature-controlled algae liquid external circulating microalgae photobioreactor, comprising a six-side closed cuboid vat body made of a transparent material, wherein two ends of the vat body in the length direction are respectively connected with a water inlet pipe and a water outlet pipe, an external circulating pipe is connected between the water inlet pipe and the water outlet pipe, and a circulating water pump is arranged on the external circulating pipe; the photobioreactor further comprises an air feeding pipe which is externally connected with a carbon dioxide pressure gas source, and the inner end opening of the air feeding pipe is close to the water outlet pipe; a heat exchanger for cooling algae liquid in the external circulating pipe is also arranged on the external circulating pipe. The algae liquid is efficiently and quickly cooled through a temperature control device of the photobioreactor, so that the purposes of saving energy and reducing consumption are achieved; closed culture of a flat photobioreactor is realized, air pollution and waste of carbon dioxide are avoided under the premise that algae cells can be fully circulated and suspended, the energy consumption of a system is reduced, and the efficiency and quality of algae cell culture are improved.

The vibration feeding and flow inoculating apparatus includes one main frame, one pneumatic sealing assembly, one feeding opening assembly, lifting lugs, one material level inducing sensor, one electromagnetically vibrating feeder, one damping base assembly, one V-shaped hopper, one feeding T-pipe assembly, one micro flowmeter with sensor, one low pressure air passage assembly, and one control cabinet with built-in flow controller, programmable control and miniature printer. The present invention completes the on-line detection of the feeding and flow inoculating process, closed-loop feedback, printing and recording, and has high feeding precision and reliable operation performance. The present invention may be used in producing small casting and in other casting fields.

The invention belongs to a wheat radiation breeding method, in particular to a 60Co-Gamma radiation method for breeding a new wheat high-molecular-weight glutenin subunit line. Reports on the 60Co-Gamma ray breeding of a new wheat high-molecular-weight glutenin subunit mutant line in the prior art are not seen. The method includes the following steps: wheat seeds are irradiated by 60Co-Gamma rays for ten minutes, and the dosage rate is 200Gy; a first mutagenized generation is produced; seeds of a second mutagenized generation are produced; individuals of the M2 generation are grown and harvested; the wheat glutenin of the M2 generation is extracted by the half-seed method, and protein electrophoresis is carried out; half seeds are grown, and a third mutagenized generation is harvested; the wheat glutenin of the M3 generation is extracted; M3 protein electrophoresis is carried out; and the new mutant line with different number of high-molecular-weight glutenin subunit bands or high-molecular-weight glutenin subunit bands at different positions is determined by comparing with the parents. The method has the advantages that: the method breeds the new wheat high-molecular-weight glutenin subunit mutant line by combining 60Co-Gamma ray radiation with the electrophoresis and combining the field planting with indoor electrophoresis screening; and the result is accurate, scientific and reliable.

The invention discloses an intelligent plant maintenance control system and method based on the internet of things. The intelligent plant maintenance control system comprises a camera, a processing device, a pesticide spraying device, a wireless gateway and a monitoring terminal, wherein the camera is used for acquiring plant images of a cultivation area; the processing device is connected with the camera and used for judging plant pest conditions according to the plant images and receiving control instructions; the pesticide spraying device is connected with the processing device and used forspraying pesticides to plants in the cultivation area for deinsectization according to the control instructions; the wireless gateway is connected with the processing device and used for uploading related information, wherein the related information at least contains the plant images and the insect pest conditions; the monitoring terminal is connected with the wireless gateway and used for receiving the plant images and the insect pest conditions and sending control instructions. According to the intelligent plant maintenance control system based on the internet of things, plant pest monitoring can be realized, pesticide spraying and deinsectization can be timely controlled, the plant cultivation quality can be improved, and in addition, compared with artificial insect prevention, the intelligent plant maintenance control system based on the internet of things is higher in efficiency, more reliable and lower in cost.

The invention relates to a preparation method of a traditional Chinese medicine feed additive capable of reinforcing kidney and activating blood circulation for boar. The preparation method comprises the steps of dewatering the medicine leaves, crushing medicine leaves and corncob, preparing EM bacteria activating fluid, preparing a solid culture medium, inoculating and fermenting the solid culture medium, drying the additive, etc. With the adoption of the traditional Chinese medicine feed additive capable of reinforcing kidney and activating blood circulation for boar, prepared by the process, both the hybridization capacity and hybridization quality of the boar can be improved.

The invention relates to a bulb cutting cultivation method of hippeastrum rutilum, and belongs to the technical field of artificial plant cultivation. With bulbs of the bulb flower hippeastrum rutilum as a mother bulb material, rapid cultivation production of seed bulbs of the hippeastrum rutilum is conducted through the procedures of cleaning, disinfecting, cutting, matrix planting, cultivation managing and the like. The cultivation method is optimized, the growth speed is increased, and the problems that according to an existing scale vermiculite cuttage cultivation technology, the bulblet development speed is low, the cultivation period is long and the production cost is high are effectively solved. The cultivation method is a beneficial improvement on the prior art and can provide technical support for industrial mass production of the seed bulbs of the hippeastrum rutilum.

The invention relates to special fat powder for marine fishes and a preparation method and application of the special fat powder. The special fat powder for the marine fishes is prepared from microbial oil, phospholipid oil, micro seaweed meal, an emulsifier, an antioxidant and a carrier. The preparation method comprises the following steps: (1) heating the phospholipid oil, mixing the heated phospholipid oil with the microbial oil and the emulsifier, and carrying out high-pressure homogeneous emulsification treatment; (2) spraying an emulsion obtained in the step (1) onto the carrier in vacuum; and (3) mixing solid powder obtained in the step (2) with the micro seaweed meal and the antioxidant to obtain the special fat powder for the marine fishes. The special fat powder for the marine fishes is balanced in nutrition; the growth and development of the marine fishes are promoted in a nutrition intake manner, the culture yield is increased, the culture quality is improved, resources aresaved, and the economic benefit is increased; furthermore, the in-vivo fat storage of the marine fishes is reduced, and the fatty liver is reduced; and the intestinal health of the marine fishes is regulated, the immunity of the marine fishes is improved, and the survival rate is increased.

The invention relates to traditional Chinese medicine compound estrus promotion powder and a preparation method thereof. The traditional Chinese medicine compound estrus promotion powder is made of the following raw materials in parts by weight: 30-60 parts of actinolite, 20-50 parts of rhizoma cyperi, 40-60 parts of hairyvein agrimony, 30-50 parts of semen cuscutae, 40-60 parts of dried tangerineor orange peel, 10-30 parts of astragalus membranaceus, 5-20 parts of atractylodes macrocephala, 10-25 parts of dried ginger and 40-60 parts of herba epimedii. The preparation method specifically comprises the following step: mixing powder of different raw materials. The medicine has the effects of promoting estrus of female livestock in time, increasing ovulation number and increasing pregnancyrates and farrowing rates.

The invention provides an agrostis stolonifera summer breeding method, which can reduce temperature, abate the light strength and can keep moisture by a shade net with 30 to 60 percent shade ratio and 2m ground clearance; the breeding lands of the agrostis stolonifera varieties such as guangdong selection No.1 creeping bent grass, L-93, Pen A4 and new strains of 1613, 3305, 1308, 2624, 6608 are shaded in summer to result in high plant, fast tillering and rapid growth, thus being beneficial to the growth of the seedlings of agrostis stolonifera. The agrostis stolonifera summer breeding method has good breeding quality, high livability, simplicity, easiness, and good effect.

The invention discloses equipment and a method used for Bombyx mori L. germplasm resource culture protection, and relates to the technical field of Bombyx mori L. germplasm resources. The equipment comprises a base, a first rotary plate and culture boxes, wherein the top of the base is fixedly provided with an annular guide rail; the first rotary plate is arranged on the annular guide rail in a sliding way; a rotary shaft on the bottom center of the first rotary plate is rotatably connected with the base; the top edges of the first rotary plate are independently fixedly provided with the culture box; the center of the top of the first rotary plate is fixedly provided with a supporting frame; and an air intake fan, an air outlet fan and a control box are fixedly placed on the supporting frame in sequence from bottom to top. The equipment is provided with a high-definition camera, a temperature sensor, a humidity sensor and an illumination intensity sensor, so that the equipment can intelligently control humidity and illumination, a Bombyx mori L. culture condition can be more accurately controlled, Bombyx mori L. culture quality is improved, a plurality of culture boxes are arranged, so that different varieties of Bombyx mori L. can be cultured, and culture efficiency is high.

The invention discloses an internet-of-things-based agricultural prevention, control and management system, which comprises a booth management terminal and a plantation management center. The booth management terminal is connected with the plantation management center via a wireless communication module. The booth management terminal is connected with a power supply module. The power supply module comprises an alternating current (AC) module, a storage battery, a solar panel and a power-off protection device. The booth management terminal is connected with a humidity monitoring device, a temperature monitoring device, a soil fertility level acquisition device, a luminous intensity monitoring device, a gas concentration monitoring device, a trace element content detecting device and an infrared probe sensor. The booth management terminal is further connected with a blue-light LED device, a temperature control device, a moistening device, a gas sustained-release device and an alarm device. The internet-of-things-based agricultural prevention, control and management system is structurally simple, convenient to use, good in security, and high in informationization level, automation level, intellectualization level, breeding quality and breeding efficiency.

The invention relates to a snake feed, in particular to a feed special for a male python during a mating period. The feed is prepared by blending and stirring a feed and an additive in a weight ratio of 100:1.0-2.0, wherein the feed is prepared by crushing, blending and stirring fish, fish fillets, chicken bones and whole chickens; and the additive is prepared by crushing, blending and stirring a plurality of vitamins, traditional Chinese medicament materials and preservatives. The feed has the advantages of obviously improving digestibility, increasing the egg laying amount of the male python, improving breed ability and immunity performance and increasing organism vigor, along with simple preparation process, low cost and high nutritive value. The feed contributes to the promotion of the mating quality of the male python on the whole and has important significance for the breeding of pythons.

The invention discloses a preparation device for a cordyceps militaris culture medium. The device comprises a frame, wherein a discharging hopper is arranged at the upper end of the frame; a discharging valve is connected with the lower end of the discharging hopper; a receiving hopper is arranged on the middle part of the frame; an annular sliding rail is arranged in the receiving hopper; a vibrating hopper is arranged at the lower end of the receiving hopper; a discharging port is connected with the lower end of the vibrating hopper; a material box is arranged at the lower end of the frame. The material is placed in the discharging hopper and enters into the annular sliding rail through the discharging valve so as to perform the first mixing of the culture medium, and then the material flows into the vibrating hopper so as to perform the secondary mixing of the culture medium and the fully mixed culture medium passes by the discharging port and enters into the material box. The preparation device disclosed by the invention is at high degree of automation and is capable of reducing labor intensity and increasing production efficiency, the cordyceps militaris culture medium is more uniformly mixed and the culture quality and medicinal value of the cordyceps militaris are promoted.

The invention discloses a vector for recombinant expression of luteinizing hormone of panda, an expression system and a preparation method thereof, which relate to the technical field of gene engineering. The vector comprises a first gene for encoding a panda LH beta subunit and a second gene for encoding a panda LH alpha subunit, the sequence of the first gene is shown as SEQ ID NO.1, and the sequence of the second gene is shown as SEQ ID NO.3. By constructing the vector and the expression system for recombinant expression of the luteinizing hormone of the panda, stable and continuous activeexpression of the LH beta subunit, the LH alpha subunit and subunit compounds of the LH beta subunit and the LH alpha subunit of the panda can be realized. The expression product can be used for inducing oestrus and ovulation of pandas, and luteinizing hormone derived from pandas cannot induce adverse reactions of organisms, so that the breeding quality of pandas can be improved. In addition, therecombinant preparation method is simple, convenient and feasible, and has a wide application prospect.