A biological selection device and selection method for black soldier fly pupae to emerge as adults

Abstract

The invention discloses a biological selection device and selection method for the emergence of black soldier flies pupae, which relates to the field of insect breeding technology, including a pupae room, which is a dark room, and is provided with a breeding rack and a flying channel structure in the pupae room, and the breeding rack is provided with a plurality of pupae containing structures, the pupae containing structures are used to contain pupae, the lower end of the flying channel structure is provided with an entrance, the upper end of the flying channel structure is provided with an exit, and a light source is provided in the flying channel structure, and after the pupae are raised in the pupae containing structure and emerge into adults, they enter the flying channel structure for screening. The invention can significantly improve the emergence rate of black soldier flies pupae, and select relatively strong and flexible individuals in batches, and has the advantages of large-scale, high emergence rate, strong selectivity, etc., and can solve the problems of uneven seed insect quality and low egg-laying rate in the large-scale breeding process of black soldier flies.

Description

Technical Field

[0001] The invention relates to the technical field of insect breeding, and in particular to a biological selection device and a selection method for black soldier fly pupae to eclosion into adults. Background Art

[0002] With the continuous growth of the national economy, the continuous acceleration of urbanization and the rapid improvement of living standards, the environmental problems caused by perishable garbage such as pig manure, catering, and kitchen waste generated every day have become a key issue of national concern. At present, in addition to the two technical means of aerobic composting and anaerobic fermentation, the engineering technology of using black soldier flies to efficiently transform perishable garbage is gradually emerging. However, the treatment technology of black soldier flies to efficiently transform perishable garbage also has the defects of large-scale production and stable treatment. Among them, the quality of black soldier flies adults and the level of mating efficiency are important factors restricting the large-scale breeding of black soldier flies. Therefore, how to improve and screen high-quality black soldier flies adults has become an important technical means for the black soldier fly efficient transformation technology to achieve large-scale production. Summary of the invention

[0003] The purpose of the present invention is to provide a large-scale, efficient, energy-saving and simple biological selection device and selection method for black soldier fly pupae to emerge as adults, so as to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The invention provides a biological selection device for the emergence of black soldier flies pupae into adults, comprising a horsefly pupa room, which is a dark room. A breeding rack and a flight channel structure are arranged in the horsefly pupa room, a plurality of pupa containing structures are arranged on the breeding rack, the pupa containing structures are used to contain horsefly pupae, an entrance is arranged at the lower end of the flight channel structure, an exit is arranged at the upper end of the flight channel structure, a light source is arranged in the flight channel structure, and after horsefly pupae are raised in the pupa containing structures and emerge into adults, they enter the flight channel structure for screening.

[0006] Preferably, the flying channel structure is spiral-shaped, and comprises a plurality of channels arranged from bottom to top, each of the channels is arranged obliquely, and adjacent channels are arranged in a bent manner.

[0007] Preferably, an exhaust fan is provided in each of the channels, and the exhaust fan is used to provide assistance or resistance, and the wind direction of each exhaust fan is parallel to the center line of the corresponding channel.

[0008] Preferably, an entrance light source is provided at the entrance of the flying channel structure, a channel light source is provided in each channel, the lighting direction of each channel light source is parallel to the center line of the corresponding channel, and an exit light source is provided at the exit of the flying channel structure, and the intensities of the entrance light source, each channel light source and the exit light source gradually increase from the entrance to the exit.

[0009] Preferably, each of the channels comprises an inner layer structure and an outer layer structure, wherein the inner layer structure is arranged on the inner side of the outer layer structure; the inner layer structure is made of float glass or ultra-white anti-reflection glass, and the outer layer structure is made of wood, glass or metal.

[0010] Preferably, the height of the exit of the flying channel structure from the ground is 4.5m to 7m, the angle between each channel and the horizontal direction is 15° to 75°, and the angle between adjacent channels is 30° to 150°.

[0011] Preferably, the bottom of the breeding rack is provided with walking wheels, and a plurality of the pupa containing structures are arranged on the breeding rack from top to bottom, with gaps between adjacent layers of the pupa containing structures, and each layer of the pupa containing structures includes at least one pupa containing tray, and each pupa containing tray is made of heat-insulating material.

[0012] Preferably, a fly-killing lamp is also provided in the horsefly pupa room; a cleaning structure is also provided in the horsefly pupa room.

[0013] Preferably, the horsefly pupa room is also provided with a temperature and humidity regulating structure, which includes an air conditioner, an air duct, a water mist nozzle and a ventilation fan, one end of the air duct is connected to the interior of the horsefly pupa room, and the other end of the air duct is connected to the ventilation fan.

[0014] The present invention also provides a selection method using the biological selection device for black soldier fly pupae to emerge as adults, comprising the following steps:

[0015] Step 1, placing horsefly pupae in a pupae holding structure for breeding, and adjusting the temperature and humidity in the horsefly pupae room by a temperature and humidity regulating structure;

[0016] Step 2: After the horsefly pupae emerge as adults, they fly into the flying channel structure. The exhaust fans of each channel in the flying channel structure are set in the following ways:

[0017] Mode 1, wind speed adjustment: the wind speed in each channel increases or decreases from bottom to top;

[0018] Mode 2, wind direction adjustment: the wind direction in each channel is forward or reverse;

[0019] Mode 3: wind speed and wind direction are adjusted simultaneously: the wind direction and wind speed of at least one exhaust fan are different from those of the other exhaust fans;

[0020] Adults that can fly out of the flight channel structure are high-quality individuals; adults that cannot fly out of the flight channel structure are low-quality individuals.

[0021] Compared with the prior art, the present invention has achieved the following technical effects:

[0022] The invention can screen out relatively strong and flexible individuals in batches, has the advantages of large-scale production, high emergence rate, strong selectivity, etc., and can solve the problems of uneven quality of seed insects and low egg-laying rate in the large-scale breeding process of black soldier flies. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a front view of the biological selection device for black soldier fly pupae to adult emergence of the present invention;

[0025] Figure 2 It is a left view of the biological selection device for black soldier fly pupae to adult emergence of the present invention;

[0026] Figure 3 A top view of the biological selection device for black soldier fly pupae to adult eclosion of the present invention;

[0027] Figure 4 It is a front view of the flying channel structure of the present invention;

[0028] Figure 5 It is a left view of the flying channel structure of the present invention;

[0029] Figure 6 A top view of the flying channel structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the flying channel structure of the present invention;

[0031] Wherein: 100-biological selection device for black soldier fly pupae to emerge as adults, 1-fly pupa room, 2-breeding rack, 3-pupa tray, 4-through hole, 5-water mist nozzle, 6-air duct, 7-ventilation fan, 8-air conditioner, 9-first section of the channel, 10-second section of the channel, 11-third section of the channel, 12-fourth section of the channel, 13-fly killer lamp, 14-cleaning structure, 15-inlet light source, 16-first light source, 17-second light source, 18-third light source, 19-fourth light source, 20-exit light source, 21-first exhaust fan, 22-second exhaust fan, 23-third exhaust fan, 24-fourth exhaust fan. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The purpose of the present invention is to provide a large-scale, efficient, energy-saving and simple biological selection device and selection method for black soldier fly pupae to emerge as adults, so as to solve the problems existing in the above-mentioned prior art.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Embodiment 1

[0036] like Figure 1-Figure 7 As shown: This embodiment provides a biological selection device 100 for the emergence of black soldier flies pupae into adults, including a horsefly pupa room 1, which is a closed rectangular dark room. A breeding rack 2 and a flight channel structure are provided in the horsefly pupa room 1. The breeding rack 2 is provided with a plurality of pupa holding structures, which are used to hold horsefly pupae for batch emergence. The flight channel structure is connected to the top of the horsefly pupa room 1, an entrance is provided at the lower end of the flight channel structure, an exit is provided at the upper end of the flight channel structure, and a light source is provided in the flight channel structure. After the horsefly pupae are raised in the pupa holding structure and emerge into adults, they enter the flight channel structure for screening.

[0037] In this embodiment, the flying channel structure is spirally curved and ascending at a certain angle. The flying channel structure includes several channels arranged from bottom to top. In this embodiment, it includes four channels, namely the first section channel 9, the second section channel 10, the third section channel 11 and the fourth section channel 12 connected in sequence. Each channel is inclined and the adjacent channels are bent. The flying channel structure can also be set as a five-section channel or a three-section channel. The outlet of the flying channel structure needs to be controlled at 4.5 to 7 meters from the ground, which can not only ensure the elimination of inferior adult insects, but also ensure that the selected high-quality adult insects can fly out of the flying channel structure. The entrance of the flying channel structure is 0.5 to 2 meters from the ground, the vertical distance from the angle between the first section channel 9 and the second section channel 10 to the ground is 1.5 to 4 meters, the vertical distance from the angle between the second section channel 10 and the third section channel 11 to the ground is 2.5 to 5 meters; the vertical distance from the angle between the third section channel 11 and the fourth section channel 12 to the ground is 3.5 to 6 meters; the outlet of the flying channel structure is 4.5 to 7 meters from the ground.

[0038] In this embodiment, an exhaust fan is provided in each channel to provide assistance or resistance. The wind speed can be adjusted to 0-5m / s, and the wind direction of each exhaust fan is parallel to the center line of the corresponding channel.

[0039] In this embodiment, an entrance light source 15 is provided at the entrance of the flight channel structure, and a light source is provided in each channel, namely a first light source 16, a second light source 17, a third light source 18 and a fourth light source 19. An exit light source 20 is provided at the exit of the flight channel structure, and the light source is an irradiation lamp with adjustable light intensity and angle. The entrance light source 15, the first light source 16, the second light source 17, the third light source 18, the fourth light source 19 and the exit light source 20 are gradually enhanced, and the attraction to the adult insects is increased by increasing the light intensity, so that the adult insects can fly along the light source all the time instead of staying or circling in the channel. The overall intensity of the light source is set between 0 and 12000lx.

[0040] The illumination direction of each light source is parallel to the center line of the corresponding channel. The spectrum of the light source is designed to be one or more of a full spectrum, an iodine tungsten spectrum or a blue-violet spectrum light source. The lamps that realize the function can be fluorescent lamps, LED lamps, incandescent lamps or iodine tungsten lamps. The first light source 16, the second light source 17, the third light source 18 and the fourth light source 19 are preferably designed in the order of incandescent lamps, LED lamps, fluorescent lamps and halogen lamps from bottom to top. The dimming method is selected from one or more of switch dimming, thyristor dimming, analog dimming or PWM dimming. The entrance light source 15 is a fluorescent lamp light source, the illumination angle is 15° to 75° obliquely downward, and the adjustable illumination intensity is 0 to 2000lx; the first light source 16, the second light source 17, the third light source 18 and the fourth light source 19 can also be LED lamp light sources, the illumination angle is 15° to 75° at the horizontal plane, which is consistent with the channel angle, and the adjustable illumination intensity of the first light source 16, the second light source 17, the third light source 18 and the fourth light source 19 is 2000 to 4000lx, 4000 to 6000lx, 6000 to 8000lx, and 8000 to 10000lx respectively; the exit light source 20 is an iodine tungsten lamp light source, the illumination angle is 15° to 75° obliquely upward, and the adjustable illumination intensity is 10000 to 12000lx.

[0041] An exhaust fan and a light source are installed at the corner of each passage section, and the installation method is embedded installation or wall-mounted installation, wherein the fan frame of the exhaust fan and the lamp holder or lamp frame of the light source are fixed on the wall, and the exhaust surface and the light-emitting surface are both designed with a rotating shaft, which can adjust the exhaust direction of the exhaust fan and the light source; the start, stop and adjustment of the exhaust fan and the light source are all controlled by the intelligent system, and the control process of the intelligent system is the existing technology.

[0042] Specifically, the lamp holder or lamp bracket is fixed on the corner wall of the passage, and the lamp head adopts a rotating shaft design, which can be flexibly turned and the lighting direction can be freely adjusted.

[0043] In this embodiment, each channel includes an inner layer structure and an outer layer structure. The inner layer structure is arranged on the inner side of the outer layer structure, and the inner layer structure forms a channel space for black soldier flies to fly. The inner layer structure is made of float glass or ultra-white anti-reflective glass, with a light transmittance of more than 95%, and refracts the light source, isolates sound and heat energy. The outer layer structure is made of wood, glass or metal, and is used to nest the light source and the air fan, and fix the channel of the inner layer structure. The exhaust fan is embedded in the corner of the outer layer structure.

[0044] In this embodiment, the external shape of each channel is a polyhedron or a cylinder, preferably a cuboid; the cross-sectional shape of each channel is a rectangle, a square, a variable prism, a circle or an ellipse, preferably a square; the width or diameter of the cross section of each channel is 0.5 to 2 m.

[0045] In this embodiment, the angle between each channel and the horizontal direction is 15° to 75°, preferably 45°, that is, Figure 7 α is 45°, β is complementary to α; the angle between adjacent channels is 30° to 150°, preferably 90°.

[0046] In this embodiment, the breeding rack 2 is hollow, and each layer is provided with 8 through holes 4, which is conducive to air circulation and ensures the regulation of temperature and humidity. The bottom of the breeding rack 2 is provided with running wheels, which have a two-way function of free movement and limited movement. Several pupa holding structures are arranged on the breeding rack 2 from top to bottom to form a multi-layer three-dimensional breeding. There is a gap between the adjacent layers of pupa holding structures. The pupa holding structures of each layer include at least one pupa holding tray 3, which can be manually or automatically disassembled. Each pupa holding tray 3 is made of modified plastic insulation material. In this embodiment, the breeding rack 2 is arranged in two rows, and each row of pupa holding structures can be arranged with 3 to 6 layers, preferably 4 layers. Each layer of pupa holding structures includes 10 or more pupa holding trays 3, and the spacing between adjacent pupa holding structures is 20 to 40 cm. The breeding rack 2 is used to provide space for the pupa holding tray 3 to be placed, which greatly saves floor space and improves space utilization.

[0047] In this embodiment, the horsefly pupa room 1 is also provided with a temperature and humidity regulating structure, which is used to regulate the temperature and humidity in the horsefly pupa room 1. The temperature and humidity regulating structure includes an air conditioner 8, an air duct 6, a water mist nozzle 5 and a ventilation fan 7. The air conditioner 8 is installed on the inner wall of the horsefly pupa room 1 to control the temperature within the range of 20 to 35°C; the air duct 6 is arranged on the top of the horsefly pupa room 1, and the water mist nozzle 5 is installed next to the air duct 6 to maintain air circulation and control the humidity within 30 to 90%; one end of the air duct 6 is connected to the inside of the horsefly pupa room 1, and the other end of the air duct 6 is connected to the ventilation fan 7. The air duct 6 is used in conjunction with the ventilation fan 7 and the water mist nozzle 5 to replace air and maintain a certain humidity, and the ventilation frequency is 0.5 to 8.5 times / hour.

[0048] In this embodiment, a fly-killing lamp 13 with a power of 10 to 100 watts is also provided in the horsefly pupa room 1, which is 0.5 to 2 m from the ground. The fly-killing lamp 13 is installed on the inner wall of the horsefly pupa room 1 to attract and kill "old, weak, sick and disabled" black soldier fly individuals; a cleaning structure 14 is also provided in the horsefly pupa room 1, and the cleaning structure 14 is a sweeping robot. When the sweeping robot is stopped, it is placed in the corner of the horsefly pupa room 1, and when it is turned on, it automatically cleans the dead bodies of black soldier flies and is used intermittently.

[0049] Since some black soldier flies will be eliminated during the flight process, and eventually fall to the bottom of the flying channel structure and die, the remaining ones will eventually be gradually killed by the fly killer lamp 13, and most of the dead black soldier flies will fall on the two walls of the pupae room 1 and the bottom of the flying channel structure. When all the pupae of a batch are screened, the sweeping robot is started to clean the ground, and other places that have not been cleaned are cleaned manually, and then the next batch of pupae will continue to emerge and screen.

[0050] This embodiment is equipped with a fly pupa room 1 and a temperature and humidity regulating structure to provide an optimal temperature and humidity suitable living environment for the emergence of black soldier fly pupae, which can significantly improve the emergence rate of black soldier fly pupae, and ensure the flying ability and activity of the emerging black soldier fly adults, thereby ensuring large-scale production.

[0051] This embodiment adopts a multi-section spiral ascending three-dimensional flying channel structure, each section of the channel is set at a certain angle and length, so as to adjust the physical strength consumed by the black soldier fly to fly out of the channel, so as to achieve the selection effect of survival of the fittest; the cross-sectional area of ​​each section of the channel is designed to be at least 1m 2 The above ensures that the black soldier fly population will not cause a large number of individuals to die or be injured due to excessive density during flight.

[0052] Based on the habitat requirements of black soldier flies pupae and the phototaxis characteristics of adults, this embodiment embeds a light source in the channel of the flying channel structure, and adjusts the light intensity of the light source to adjust the different attractiveness of each channel to black soldier flies, so that strong black soldier flies can continue to fly upwards, and weak black soldier flies are gradually eliminated. The flying channel structure is combined with the light source to screen out strong and high-quality adult individuals through the flying ability and sensitivity to light of black soldier flies pupae.

[0053] The flight channel structure of this embodiment has an exhaust fan embedded in the channel. By adjusting the wind direction and speed of the exhaust fan, the quality of the required black soldier flies can be adjusted so that a positive or reverse airflow is formed in each section of the channel, thereby screening out more robust black soldier fly adult individuals to meet the needs of large-scale production.

[0054] The flight channel structure of this embodiment is equipped with light-transmitting float glass or ultra-white anti-reflection glass, and its light transmittance reaches more than 95%, which can fully ensure the brightness inside the flight channel structure and isolate heat energy and noise, making the flight channel structure an environment suitable for black soldier flies to fly and survive.

[0055] This embodiment can significantly improve the emergence of black soldier flies pupae and the egg-laying quality of adults, meeting the industrial demand for efficient transformation and resource utilization of waste black soldier flies.

[0056] Embodiment 2

[0057] This embodiment provides a selection method using the biological selection device 100 for black soldier fly pupae to adult insects of the first embodiment, comprising the following steps:

[0058] Step 1, placing the horsefly pupae in a pupa containing structure for breeding, and adjusting the temperature and humidity in the horsefly pupae room 1 by a temperature and humidity regulating structure;

[0059] Step 2: After the horsefly pupae emerge as adults, they fly into the flight channel structure from the entrance at the lower end of the flight channel structure under the attraction of the light source. The exhaust fans of each channel in the flight channel structure are set in the following modes:

[0060] Mode 1, wind speed adjustment: the wind speed in each channel increases or decreases from bottom to top;

[0061] Mode 2, wind direction adjustment: the wind direction in each channel is forward or reverse;

[0062] Mode 3: wind speed and wind direction are adjusted simultaneously: the wind direction and wind speed of at least one exhaust fan are different from those of the other exhaust fans;

[0063] A part of the adults fly into the first channel 9, the second channel 10, the third channel 11 and the fourth channel 12 in sequence, and finally fly out of the channel. The adults that can fly out of the flying channel structure are high-quality individuals; another part of the adults cannot fly too high, fly continuously or fly around due to their poor physical strength or lack of intelligence, and are gradually attracted by the fly killer lamp 13 and eventually die. The adults that cannot fly out of the flying channel structure are low-quality individuals.

[0064] Application Example 1

[0065] This application example explores the effect of the biological selection device 100 on the emergence rate of black soldier fly pupae. The test insects are 1-day-old black soldier fly pupae. The experiment is carried out in the same pupa room 1. The specific experimental design is as follows: 200 1-day-old black soldier fly pupae are placed in a 500mm*500mm*500mm pupa tray 3. The temperature of the 1# experimental group is adjusted to 20-35°C and the relative humidity of the air is kept constant at 30%-90% by using air conditioners 8 and water mist nozzles 5; the temperature of the 2# experimental group is controlled below 20°C and the relative humidity of the air is 30%; the temperature of the 3# experimental group is controlled below 35°C and the relative humidity of the air is above 90%.

[0066] Table 1 Effect of biological environment on the emergence rate of black soldier fly pupae

[0067]

[0068]

[0069] It can be seen from the results in Table 1 that the biological selection device 100 for black soldier fly pupae to adult insects adopting the design scheme in Table 1 has a better effect on improving the emergence rate of black soldier fly pupae after adjusting the environment than the pupae emergence rate without any environmental adjustment. This shows that a suitable temperature and humidity environment can improve the emergence rate of black soldier fly pupae.

[0070] Application Example 2

[0071] The difference between this application example and application example 1 is that:

[0072] In this application example, light sources with different spectra and intensities are arranged in the flying channel structure. During the flying process, the light intensity of the light source at the entrance, the light sources in the channel and the light source at the exit is successively increased from the entrance to the exit, with a minimum of not less than 1000lx and a maximum of not more than 12000lx. The entrance light source 15 of the first section channel 9 is set as an LED light source, the light sources in each channel are all set as fluorescent light sources, and the exit light source 20 of the fourth section channel 12 is set as a halogen light source, preferably an iodine tungsten lamp light source. The degree of attraction to black soldier flies is improved by enhancing the light intensity and changing the spectrum type of the light source, thereby achieving the goal of enticing black soldier flies to continuously fly in a spiral upward along each section of the channel.

[0073] Application Example 3

[0074] The difference between this application example and application example 2 is that:

[0075] In this application example, an exhaust fan is added to the flying channel structure, two-way exhaust is adopted, and the wind speed is controlled by adjusting the exhaust gear. In the process of flying, in addition to maintaining a livable environment with constant temperature and humidity, it is also necessary to provide a certain wind speed assistance or resistance when the black soldier fly flies fly through each section of the channel. There are two ways to provide assistance or resistance. The first method is to adjust the wind speed only. The wind speed provided by the first exhaust fan 21, the second exhaust fan 22, the third exhaust fan 23 and the fourth exhaust fan 24 is weakened or strengthened in turn, and the wind direction is the forward or reverse direction of the black soldier fly adult flight, that is, flying with the wind or against the wind. The second method adjusts the wind direction and wind speed at the same time. The first exhaust fan 21 and the second exhaust fan 22 are reverse, that is, flying against the wind, and the wind speed is set at 1-5m / s, and the third exhaust fan 23 and the fourth exhaust fan 24 are forward, that is, flying with the wind, and the wind speed is set at 0-5m / s. Regardless of the above methods, the maximum wind speed does not exceed 5m / s. Ultimately, the strength of the black soldier flies is screened based on whether they can fly away from the flight channel structure, and different strength levels of black soldier flies adult individuals are obtained by adjusting the wind speed or artificially controlling the external environment.

[0076] This application case explores the selection ability of the flying channel structure on the strong black soldier fly adults. The test insects are half-day-old black soldier flies, 200 in each group, including 50 of 0.18g, 50 of 0.16g, 50 of 0.14g, and 50 of 0.12g. The test is carried out in the same fly pupa room 1 and the same environment. The specific experimental design is as follows: the temperature of the fly pupa room 1 is controlled at 20-35℃, the relative humidity of the air is controlled at 30%-90%, the angle of the design channel is 45°, the length is 2m, the cross-sectional area is square, the width is 1m, and the flight time is 2h. Among them, the designed wind speed of experimental group 1# was -5m / s, and 200 half-day-old black soldier flies emerged as adults; the designed wind speed of experimental group 2# was -2m / s, and 200 half-day-old black soldier flies emerged as adults; the designed wind speed of experimental group 3# was 0m / s, and 200 half-day-old black soldier flies emerged as adults; the designed wind speed of experimental group 4# was 2m / s, and 200 half-day-old black soldier flies emerged as adults; the designed wind speed of experimental group 5# was 5m / s, and 200 half-day-old black soldier flies emerged as adults.

[0077] Table 2 Effect of wind speed on biological selectivity in flying channel structure

[0078] project Wind speed (m / s) Average adult weight Elimination rate 1# -5 0.18g 78％ 2# -2 0.16g 47％ 3# 0 0.14g 39％ 4# 2 0.12g 18％ 5# 5 0.12g 9％

[0079] From the results in Table 2, it can be seen that the average weight of strong adults screened out by flying against the wind, flying without wind, and flying with the wind in the flying channel structure designed in Table 2 decreases in turn, and the elimination rate decreases in turn. This shows that by adjusting the wind speed, black soldier fly adults of different strength levels can be screened out and the corresponding elimination rate can be adjusted.

[0080] Application Example 4

[0081] The difference between this application example and application example 3 is that:

[0082] In this application example, the angle between each section of the flying channel structure and the horizontal plane is 15° to 75°, preferably 45°, and the angle between each section of the channel is 30° to 150°, preferably 90°. Each section of the channel is connected end to end, and the whole is in a spiral ascending posture, such as Figure 7 shown.

[0083] This application example explores the effect of the inclination angle of the flight channel structure on the flight ability of screening strong black soldier fly adults. The test insects were half-day-old black soldier flies, and the weight of the adults was controlled at about 0.15 g. The test was carried out in a four-section channel with a square cross-sectional area of ​​1 m width and a length of 2 m. The specific experimental design was as follows: the temperature of the fly pupa room 1 was controlled at 20-35°C, the relative humidity of the air was controlled at 30%-90%, and the wind speed was 0 m / s. The angle between the channel and the horizontal plane of the 1# experimental group was designed to be 30°, and 100 half-day-old black soldier flies emerged as adults; the angle between the channel and the horizontal plane of the 2# experimental group was designed to be 45°, and 100 half-day-old black soldier flies emerged as adults; the angle between the channel and the horizontal plane of the 3# experimental group was designed to be 60°, and 100 half-day-old black soldier flies emerged as adults; the angle between the channel and the horizontal plane of the 4# experimental group was designed to be 75°, and 100 half-day-old black soldier flies emerged as adults.

[0084] Table 3 Effect of the inclination angle of the flying channel structure on biological selection

[0085]

[0086]

[0087] It can be seen from the results in Table 3 that the elimination rates of black soldier flies of the same weight using the 30° structure, 45° structure, 60° structure and 75° structure of the flight channel structure of the design scheme in Table 3 increase successively within the same time, and the rate of increase is also increasing. This shows that the greater the inclination angle of the flight channel structure, the higher the flight elimination rate of black soldier flies, and the longer the flight time. Therefore, the elimination rate and screening time of black soldier flies can be adjusted by adjusting the inclination angle of the flight channel structure.

[0088] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A biological selection device for black soldier fly pupae to adult, characterized in that: The invention comprises a horsefly pupa room, wherein the horsefly pupa room is a dark room, wherein a breeding rack and a flying channel structure are arranged in the horsefly pupa room, wherein a plurality of pupa holding structures are arranged on the breeding rack, wherein the pupa holding structures are used to hold horsefly pupae, wherein an entrance is arranged at the lower end of the flying channel structure, an exit is arranged at the upper end of the flying channel structure, and a light source is arranged in the flying channel structure, and after horsefly pupae are raised in the pupa holding structures and emerge into adults, they enter the flying channel structure for screening; The flying channel structure is spiral-shaped and comprises a plurality of channels arranged from bottom to top, each of the channels is arranged obliquely, and adjacent channels are arranged in a bent manner.

2. The biological selection device for black soldier fly pupae to adult according to claim 1, characterized in that: An exhaust fan is provided in each of the channels, and the exhaust fan is used to provide assistance or resistance. The wind direction of each exhaust fan is parallel to the center line of the corresponding channel.

3. The biological selection device for black soldier fly pupae to adult according to claim 1, characterized in that: An entrance light source is arranged at the entrance of the flying channel structure, and a channel light source is arranged in each of the channels. The illumination direction of each channel light source is parallel to the center line of the corresponding channel. An exit light source is arranged at the exit of the flying channel structure, and the intensities of the entrance light source, each of the channel light sources and the exit light source gradually increase from the entrance to the exit.

4. The biological selection device for black soldier fly pupae to adult according to claim 1, characterized in that: Each of the channels comprises an inner layer structure and an outer layer structure, wherein the inner layer structure is arranged on the inner side of the outer layer structure; the inner layer structure is made of float glass or ultra-white anti-reflection glass, and the outer layer structure is made of wood, glass or metal.

5. The biological selection device for black soldier fly pupae to adult according to claim 1, characterized in that: The height of the exit of the flying channel structure from the ground is 4.5m to 7m, the angle between each channel and the horizontal direction is 15° to 75°, and the angle between adjacent channels is 30° to 150°.

6. The biological selection device for black soldier fly pupae to adult according to claim 1, characterized in that: The bottom of the breeding rack is provided with walking wheels, and a plurality of pupa containing structures are arranged on the breeding rack from top to bottom, with gaps between adjacent layers of the pupa containing structures, and each layer of the pupa containing structures includes at least one pupa containing tray, and each pupa containing tray is made of heat-insulating material.

7. The biological selection device for black soldier fly pupae to adult according to claim 1, characterized in that: A fly-killing lamp is also arranged in the horsefly pupa room; and a cleaning structure is also arranged in the horsefly pupa room.

8. The biological selection device for black soldier fly pupae to adult according to claim 1, characterized in that: The horsefly pupa room is also provided with a temperature and humidity regulating structure, which includes an air conditioner, an air duct, a water mist nozzle and a ventilation fan. One end of the air duct is connected to the interior of the horsefly pupa room, and the other end of the air duct is connected to the ventilation fan.

9. A selection method using the biological selection device for black soldier fly pupae to adult insects according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, placing horsefly pupae in a pupae holding structure for breeding, and adjusting the temperature and humidity in the horsefly pupae room by a temperature and humidity regulating structure; Step 2: After the horsefly pupae emerge as adults, they fly into the flying channel structure. The exhaust fans of each channel in the flying channel structure are set in the following ways: Mode 1, wind speed adjustment: the wind speed in each channel increases or decreases from bottom to top; Mode 2, wind direction adjustment: the wind direction in each channel is forward or reverse; Mode 3: wind speed and wind direction are adjusted simultaneously: the wind direction and wind speed of at least one exhaust fan are different from those of the other exhaust fans; Adults that can fly out of the flight channel structure are high-quality individuals; adults that cannot fly out of the flight channel structure are low-quality individuals.

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