Efficient sugarcane hybridization method and system

Abstract

According to the efficient sugarcane hybridization method and system, an independent pollen donor area is arranged to plant flowering male parent plants, and automatic collection of male parent pollen is achieved through timing vibration; collected pollen is conveyed into a pollen storage box for temporary storage through a vacuum negative pressure pipeline, a plurality of hybridization chambers for isolated cultivation of single-column female parents are arranged in an independent hybridization pollination area, and each hybridization chamber is communicated with the pollen storage box through a negative pressure pipeline network. Through physical isolation of a donor area and a pollination area, vacuum directional pollen transmission and high-temperature inactivation of female parent pollen, the problems of flowering phase mismatching and female parent selfing pollution caused by a traditional mixed planting mode are thoroughly solved, and high purity of hybrid seeds is fundamentally guaranteed; meanwhile, by means of automatic collection, time-sharing storage and accurate directional conveying as required of pollen and parallel operation of multiple hybridization chambers, an accurate pollination mode of'single male parent-multi-period-cross female parent 'is efficiently realized, and the efficiency, accuracy and large-scale operation capability of cross breeding are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of sugarcane crop pollination, in particular to an efficient sugarcane hybridization method and system thereof. Background Art

[0002] In traditional sugarcane hybrid breeding operations, flowering male and female plants are generally placed together in a single hybridization room or enclosed space for pollination. This spatial mixing setting significantly increases the risk of height mismatch in flowering due to the natural differences in growth and development of different parental plants, often resulting in a misalignment between the peak period of pollen scattering of the male parent and the optimal pollination period of the female parent's stigma, causing pollination failure or low efficiency. Secondly, the premise of traditional sugarcane hybridization is that the male and female parents must flower at the same time under natural conditions. As a result, many ideal hybrid combinations with complementary traits cannot be hybridized for seed production due to the different flowering periods of the parents, resulting in low sugarcane parent utilization. Thirdly, during the same period when the male parent pollen participates in pollination, the pollen produced by the female plant itself mixed in the same room is extremely easy to drift and contaminate its own stigma, leading to serious female self-pollination. The seeds produced by this non-target self-pollination are mixed with the target hybrid seeds, greatly reducing the purity of the hybrid seeds. Summary of the Invention

[0003] The purpose of the present invention is to provide an efficient sugarcane hybridization method and system thereof, which solves the problems of mismatched flowering periods caused by mixed parental plants and inaccurate hybridization caused by pollen contamination of the female plant in traditional hybridization.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: an efficient sugarcane hybridization method, comprising the following steps;

[0005] Set up a pollen donor area, plant flowering sugarcane male parent plants in the pollen donor area, and shake the sugarcane male parent plants regularly to collect the male parent pollen;

[0006] A male parent pollen storage box is set up, and the pollen collected from the pollen donor area is collected and temporarily stored in the male parent pollen storage box through a vacuum negative pressure pipe;

[0007] A hybridization pollination area is set up, which is equipped with multiple independent hybridization chambers. Single-column sugarcane female plants are cultivated in independent hybridization chambers. Each hybridization chamber is connected to a negative pressure pipe, which is connected to the male parent pollen storage box;

[0008] Monitor or adjust the temperature in the hybridization pollination area, adjust the temperature of each hybridization chamber in the hybridization pollination area, set the temperature to 50 degrees, and perform self-inactivation of pollen on the female sugarcane female plant for 3 minutes;

[0009] The sugarcane female plants are hybridized, and the male pollen in the male pollen storage box is directionally transported to each hybridization room through a negative pressure pipe, and the temperature and humidity in the hybridization room are adjusted again, the temperature is 25-28 degrees Celsius, and the relative humidity is maintained at 80-85%.

[0010] Furthermore, the pollen collected from the male parent is depollened by artificial or mechanical vibration, and the humidity in the pollen storage box is maintained at ≤10% and the temperature at -2-0°C.

[0011] Furthermore, during the hybridization step of the sugarcane female plants, the corresponding negative pressure pipeline valves can be selectively opened according to the hybridization chamber numbers to achieve individual or batch transportation of pollen.

[0012] Furthermore, the air pressure parameters in the negative pressure pipe include an air flow velocity of 0.5-2 m / s and a continuous delivery time of 10-30 minutes.

[0013] Furthermore, it includes a pollen donor shed, a hybridization shed, a first pneumatic conveying pump, a pollen collection box and a second pneumatic conveying pump. The pollen donor shed has multiple donor rooms, and a negative pressure pipe is provided at the bottom of the donor room. The negative pressure pipe is connected to the first pneumatic conveying pump. One end of the pollen collection box is connected to the first pneumatic conveying pump, and the other end is connected to the second conveying pump. The hybridization shed has multiple hybridization rooms, and a negative pressure pipe is provided on the top of each hybridization room.

[0014] Furthermore, the interior of the donor room is a rectangular cavity, the bottom of the rectangular cavity is hinged with a first bucket-shaped flip cover, the bottom of the first bucket-shaped flip cover is provided with a powder collecting hole, a first limiting hole is provided above the powder collecting hole, and the negative pressure pipe is connected to the powder collecting hole.

[0015] Furthermore, a wall-cleaning vibrator is provided on the inner wall of the first bucket-shaped flap, a movable clamp is provided below the donor room, and a powder-exciting vibrator is provided on the movable clamp.

[0016] Furthermore, a filter screen is provided on the bucket-shaped flip cover, and the filter screen is located above the powder collecting hole. A second limiting hole is provided on the filter screen, and the second limiting hole is aligned with the first limiting hole.

[0017] Furthermore, a second bucket-shaped flip cover is hingedly connected below the rectangular cavity of the hybridization room, and a second limiting hole is provided at the bottom of the second bucket-shaped flip cover.

[0018] Furthermore, a first electric heating tube and a first water mist tube are provided in the pollen collection box, and a second electric heating tube and a second water mist tube are provided in the hybridization room.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The hybridization method of the present invention sets up independent pollen donor areas and hybridization pollination areas, uses vacuum negative pressure pipes to realize the separate collection, storage and directional transportation of male parent pollen, and combines the independent temperature control technology of the hybridization chamber (high temperature treatment at 50°C for 3 minutes to inactivate the female parent's own pollen). It completely solves the problems of flowering period mismatch and female parent self-pollen contamination caused by mixing of parents in traditional hybridization. While ensuring the purity of hybrid seeds, by collecting male parent pollen in time and directional transportation to different hybridization chambers on demand, precise pollination of a single male parent across multiple time periods and female parents is achieved, significantly improving breeding efficiency and hybridization accuracy.

[0021] 2. The hybridization device of the present invention realizes the automatic collection of large-scale male parent pollen by setting a movable clamp at the bottom of each donor room in the pollen donor shed to clamp the sugarcane, and electrically drives the sugarcane to vibrate through vibration, thereby replacing the problem of manual shaking of pollen, which consumes a lot of physical energy and has low collection efficiency; the first bucket-shaped flip cover and the second bucket-shaped flip cover are hingedly connected, so that the bottom of the donor room and the hybridization room can be opened by flipping, and the male and female plants can be conveniently placed into the donor room and the hybridization room; multiple donor rooms / hybridization rooms are combined with a negative pressure pipeline network to realize the simultaneous collection of multiple male parent pollen and batch pollination across female parents in a single operation, which greatly improves the efficiency compared with traditional manual operation; the pollen collection box is equipped with built-in electric heating tubes and water mist tubes, which can adjust the pollen storage temperature and humidity to maintain activity. At the same time, the second electric heating tube in the hybridization room supports a high temperature of 50°C to inactivate the female parent pollen, blocking the female parent self-pollination contamination at the source. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings:

[0023] Figure 1 This is a gas circuit connection diagram of an efficient sugarcane hybridization method of the present invention;

[0024] Figure 2 Schematic diagram of the internal structure of the donor room of the present invention.

[0025] In the figure: 1 donor room, 2 hybridization room, 21 second electric heating tube, 22 second water mist pipe, 3 first pneumatic conveying pump, 4 pollen collection box, 41 first electric heating tube, 42 first water mist pipe, 5 second pneumatic conveying pump, 6 negative pressure pipe, 7 first bucket-shaped flip cover, 72 powder collecting hole, 73 first limiting hole, 74 movable clamp, 75 powder exciting vibration machine, 76 wall cleaning vibration machine, 77 filter screen, 78 second limiting hole, 8 second bucket-shaped flip cover. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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.

[0027] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0028] like Figure 1 and Figure 2 As shown, a sugarcane hybridization system and its system include a pollen donor shed, a hybridization shed, a first pneumatic conveying pump 3, a pollen collection box 4 and a second pneumatic conveying pump 5. The pollen donor shed has multiple donor rooms 1, and a negative pressure pipe 6 is provided at the bottom of the donor room 1. The negative pressure pipe 6 is connected to the first pneumatic conveying pump 3. One end of the pollen collection box 4 is connected to the first pneumatic conveying pump 3, and the other end is connected to the second conveying pump. The hybridization shed has multiple hybridization rooms 2, and a negative pressure pipe 6 is provided on the top of each hybridization room 2.

[0029] Specifically, it is necessary to divide the pollen donor area, hybridization area and equipment area in the selected flat, well-ventilated area that is easy to isolate and manage. The equipment area should be close to or located between the two sheds. Then, the pollen donor shed and hybridization shed are built separately. Both sheds need to adopt a sturdy steel frame structure and be built and partitioned by PC boards to separate multiple independent donor rooms 1. Each donor room 1 is used to plant a single male parent or a batch of male parents to ensure that the internal environment is controllable and prevent external pollen contamination and accidental escape or mixing of internal pollen. The construction of the hybridization shed is the same as that of the pollen donor shed. It is also necessary to separate multiple independent hybridization rooms 2. Each hybridization room 2 is used to plant female plants, and hybridization needs to be completed in the hybridization room 2. The ground of the donor shed needs to be hardened, and a water channel is provided under the hybridization room 2 and the donor room 1. Water can flow into the channel to provide nutrients for the planted male and female plants.

[0030] The negative pressure pipe system 6 is installed. Within each donor room (1) of the pollen donor shed, a main pollen collection pipe is laid on the ground or attached to a steel frame along the planting row. Smooth, corrosion-resistant PVC or galvanized steel pipes are used. Branch pollen suction pipes with suction heads or regulating valves are installed upward on the main pollen collection pipes, corresponding to the inflorescence position of the male parent plant. The main pollen collection pipes of all donor rooms (1) are ultimately combined into a main pipe, which passes through the pollen donor shed and leads to the equipment area. A main diffusion pipe, made of the same material requirements as above, is laid lengthwise below the top scaffolding of each hybridization room (2) in the hybridization shed. Downward or lateral air outlet branches or outlets are evenly distributed on the main diffusion pipes to achieve uniform and gentle pollen distribution. The main diffusion pipes of all hybridization rooms (2) are also combined into a main pipe, which leads to the equipment area and connects to the male parent pollen storage tank.

[0031] At the same time, the first pneumatic conveying pump 3 is firmly installed, which adopts a high-pressure centrifugal fan or a Roots wind, and is connected to the negative pressure pollen collection main pipe from the donor shed through a pipeline at the air inlet, and its outlet is connected to the air inlet of the male parent pollen collection box 4 through a pipeline. The male parent pollen collection box 4 is a key transfer station, and an effective gas-solid separation device needs to be designed inside it. The gas-solid separation device adopts a cyclone separator combined with a filter bag / filter cartridge to separate gas and powder, so that after the pollen-containing air flow enters, the pollen particles are separated and retained at the bottom of the box, and the pollen is cleaned. Clean air is discharged from the exhaust port. A sealed pollen collection port is provided at the bottom of the pollen collection box 4 for regular pollen collection, and an outlet of a pollen conveying valve is provided. The second pneumatic conveying pump 5 is installed and connected to the output port of the male parent pollen storage box. The air inlet of the second pneumatic conveying pump 5 is connected to the pollen output port of the pollen collection box 4 through a pipe, and its air outlet is connected to the diffusion pipe main leading to the top of the hybridization shed through a pipe. All interfaces of the entire pipeline network are sealed to prevent air leakage from causing efficiency loss or pollen leakage.

[0032] Finally, it is necessary to configure a control system and debug it to provide a stable power supply and air source for the first and second pneumatic conveying pumps 3 and 5, and install a PLC control system, sequence controller and frequency converter to control the start and stop, operation sequence and duration of the pumps, and accurately adjust the delivery rate of the air pump through the frequency converter to control the suction of the donor shed to ensure effective collection without damaging the flowers and the blowing force of the hybrid shed to ensure uniform distribution without damaging the plants. At the same time, pressure sensors are installed for monitoring and feedback, and all pipelines and equipment are firmly supported and fixed, and clearly marked. No-load tests are carried out to check the sealing and measure and adjust the wind pressure and wind speed at key points; load tests are carried out to use simulated pollen to verify the collection efficiency, separation effect and diffusion uniformity, and fine-tune accordingly. During the actual operation of the sugarcane flowering period, the optimization parameters such as collection / delivery time and fan frequency are continuously monitored. The core goal is to maximize the activity of pollen, eliminate pollution and mixing, and achieve efficient and accurate pollination, thereby significantly improving the efficiency and success rate of sugarcane hybrid breeding.

[0033] The interior of the donor room 1 is a rectangular cavity, and a first bucket-mounted flap 7 is hingedly provided at the bottom of the rectangular cavity. A pollen collecting hole 72 is provided at the bottom of the first bucket-mounted flap 7, and a first limiting hole 73 is provided above the pollen collecting hole 72. The negative pressure pipe 6 is connected to the pollen collecting hole 72. Specifically, each independent donor room 1 of the pollen donor shed is designed as a rectangular cavity. The bottom of the cavity is not fixed and closed, but is hingedly installed with a first bucket-mounted flap 7. The interior of the first bucket-mounted flap 7 is a smooth surface. Under normal conditions, it can be closed upward and fit tightly with the side walls of the rectangular cavity to form a relatively closed space, which covers the inflorescence area of the male sugarcane plant and effectively prevents the pollen from escaping at will. When the plant needs to be replanted or removed, the bucket-shaped flap can be hinged around the cavity. The connecting shaft flips downward and opens, and the bucket-shaped shape naturally forms a downward-folding funnel structure. A powder collecting hole 72 is provided at the bottom center of this bucket-shaped flip cover. Above the powder collecting hole 72, that is, on the inclined wall of the bucket-shaped flip cover, there is also a first limiting hole 73. The negative pressure pipe 6 laid at the bottom of the donor room 1 and its corresponding dust suction branch pipe or suction port are directly and sealedly connected to the powder collecting hole 72 at the bottom of the first bucket-mounted flip cover 7 through the connecting component flange. That is, when the first pneumatic conveying pump 3 is started to generate negative pressure, the mature and scattered pollen can be effectively guided to gather at the bottom of the bucket, and is sucked into the connected pipe system by the negative pressure airflow through the pollen collecting hole 72, and finally transported to the pollen collection box 4. The first limiting hole 73 is used to fix the planted plants to ensure that the plants will not tilt or fall over.

[0034] A wall-cleaning vibration machine 76 is provided on the inner wall of the first bucket-shaped flip, and a movable clamp 74 is provided under the donor room 1, and a powder-exciting vibration machine 75 is provided on the movable clamp 74; specifically, the wall-cleaning vibration machine 76, when the pollen collection process is started, the negative pressure airflow acts on the pollen collecting hole 72, and the wall-cleaning vibration machine 76 generates high-frequency micro-vibration, which effectively causes the pollen particles that are retained on the inclined wall or side of the bucket-shaped flip cover due to static electricity or slight adhesion to loosen and detach, and under the action of gravity and vibration, naturally slide down the bucket-shaped inclined surface and gather into the pollen collecting hole 72 at the bottom, so as to be sucked away by the negative pressure airflow, which greatly reduces the residual waste of pollen on the collection surface. During the operation, a movable clamp 74 is specifically positioned beneath the rectangular cavity of donor room 1. Its function is to firmly clamp the base of the stalk of the male sugarcane plant planted within donor room 1, ensuring that the plant remains upright and stable during operation. More importantly, movable clamp 74 itself is equipped with a pollen vibrator 75. When activated, the mechanical vibration generated by this vibrator 75 is directly transmitted to the clamped plant, causing the plant's inflorescence to sway or shake moderately. This actively applied mechanical stimulation simulates the effects of natural wind or artificial shaking, effectively forcing mature pollen to scatter from the anthers at an accelerated rate, significantly increasing the amount of pollen available for collection. Therefore, through the coordinated operation of the vibration motor on the inner wall of the bucket-shaped flip cover and the vibration motor of movable clamp 74, the former solves the problem of pollen residue during the pollen collection process, while the latter actively stimulates pollen release. Together, these two constitute a highly efficient, proactive pollen scattering and collection enhancement system, significantly improving efficiency compared to traditional manual operations.

[0035] The first bucket-mounted flip cover 7 is provided with a filter screen 77, which is located above the pollen collecting hole 72. The filter screen 77 is provided with a second limiting hole 8178, which is aligned with the first limiting hole 73. The filter screen 77 is rigidly connected to the first bucket-mounted flip cover 7 itself. Therefore, when the first bucket-mounted flip cover 7 is flipped downward to open or flipped upward to close around the hinge axis, the filter screen 77 will move synchronously. When the first bucket-mounted flip cover 7 is flipped upward to merge with the bottom of the rectangular cavity of the donor room 1, the filter screen 77 is then in a horizontal state and is located parallel to the bottom of the interior space of the rectangular cavity, that is, just below the inflorescence area of the male sugarcane plant. In this closed state, it can effectively intercept and filter out leaves, calyx fragments or other large debris that accidentally fall due to the vibration of the plant by the "pollen vibrator 75", preventing these impurities from being sucked into the negative pressure pipe 6 system through the pollen collecting hole 72, thereby protecting the pipe and collection equipment from blockage or contamination, and ensuring that relatively pure pollen is collected. In addition, a second limiting hole 8178 is specially opened on the filter screen 77, and the position of the hole is aligned with the original first limiting hole 73 on the first bucket-mounted flip cover 7. The purpose of this second limiting hole 8178 is to provide a positioning and passing channel for the stem (pole) of the father sugarcane plant planted in the donor room 1. After the plant is planted and positioned, its stem passes through the aligned first limiting hole 73 and the second limiting hole 8178, which not only ensures the stability of the plant during the vibration process, but also ensures that the filter screen 77 and the limiting structure on it will not interfere with the plant stem during the opening and closing process of the flip cover, thereby maintaining the smoothness and reliability of the operation of the device.

[0036] The structure of the hybridization room 2 is the same as that of the donor room 1. A second bucket-shaped flap 8 is hingedly connected to the bottom of the rectangular cavity of the hybridization room 2, and a second limiting hole 8178 is provided at the bottom of the second bucket-shaped flap 8. The structure of the hybridization room 2 is the same as that of the second bucket-shaped flap 8, except that the second bucket-shaped flap 8 does not need to reserve a pollen collection hole.

[0037] The pollen collecting box 4 is provided with a first electric heating tube 41 and a first water mist tube 42 , and the hybridization room 2 is provided with a second electric heating tube 21 and a second water mist tube 22 .

[0038] In order to accurately control the environmental parameters of key links to ensure pollen activity and hybridization success rate, an integrated temperature and humidity control system is installed inside the pollen collection box 4 and the hybridization room 2. Specifically, a first electric heating tube 41 and a first water mist tube 42 are specially installed on the inner wall of the cavity of the pollen collection box 4. The first electric heating tube 41 can actively heat and increase the temperature to prevent the humidity in the box from being too high, causing pollen to clump or mold, or to maintain a suitable storage temperature in a low temperature environment; the first water mist tube 42 can spray fine water mist to appropriately increase the humidity in the box under dry conditions to avoid pollen inactivation due to excessive dehydration. The two work together to ensure that the collected and temporarily stored pollen is always in the optimal temperature and humidity storage environment. Similarly, a second electric heating tube 21 and a second water mist tube 22 are installed at the top or sidewall of each hybridization room 2. The second electric heating tube 21 is used to control the temperature inside the hybridization room 2, raising the temperature in cold weather to promote pollination. The second water mist tube 22 is used to adjust the humidity in the space, keeping the stigma moist to facilitate pollen attachment and germination. Together, these two sets of devices create a stable and suitable pollination microenvironment for the mother plant, effectively overcoming the influence of external climate fluctuations. Through this design of independent control of each zone, pollen can obtain targeted environmental protection during the collection and storage stage (in the collection box) and the final pollination stage (in the hybridization room 2), significantly improving pollen utilization efficiency and hybrid fruit set rate.

[0039] In addition to the above-mentioned preferred embodiments, the present invention has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. An efficient sugarcane hybridization method, characterized in that: The following steps are included: Set up a pollen donor area, plant flowering sugarcane male parent plants in the pollen donor area, and shake the sugarcane male parent plants regularly to collect the male parent pollen; A male parent pollen storage box is set up, and the pollen collected from the pollen donor area is collected and temporarily stored in the male parent pollen storage box through a vacuum negative pressure pipe; A hybridization pollination area is set up, which is equipped with multiple independent hybridization chambers. Single-column sugarcane female plants are cultivated in independent hybridization chambers. Each hybridization chamber is connected to a negative pressure pipe, which is connected to the male parent pollen storage box; Monitor or adjust the temperature in the hybridization pollination area, adjust the temperature of each hybridization chamber in the hybridization pollination area, set the temperature to 50°C for 3 minutes, and perform self-inactivation of pollen on the female sugarcane female parent plants; The sugarcane female plants are hybridized, and the male pollen in the male pollen storage box is directionally transported to each hybridization room through a negative pressure pipe, and the temperature and humidity in the hybridization room are adjusted again, the temperature is 25-28 degrees Celsius, and the relative humidity is maintained at 80-85%.

2. The efficient sugarcane hybridization method according to claim 1, characterized in that: The pollen of the male parent is collected and de-pollened by artificial or mechanical vibration, and the humidity in the pollen storage box is maintained at ≤10% and the temperature is -2-0°C.

3. The efficient sugarcane hybridization method according to claim 1, characterized in that: During the hybridization step of sugarcane female plants, the corresponding negative pressure pipeline valves can be selectively opened according to the hybridization chamber numbers to achieve individual or batch transportation of pollen.

4. The efficient sugarcane hybridization method according to claim 1, characterized in that: The air pressure parameters in the negative pressure pipe include an air flow velocity of 0.5-2 m / s and a continuous delivery time of 10-30 minutes. The frequency and time of pollen delivery can be appropriately adjusted according to the flowering progress of the mother plant and the pollen storage capacity.

5. A sugarcane hybridization system for implementing the efficient sugarcane hybridization method according to any one of claims 1 to 4, characterized in that: The pollen collection box includes a pollen donor shed, a hybrid shed, a first pneumatic conveying pump, a pollen collection box and a second pneumatic conveying pump. The pollen donor shed has multiple donor rooms, and a negative pressure pipe is provided at the bottom of the donor room. The negative pressure pipe is connected to the first pneumatic conveying pump. One end of the pollen collection box is connected to the first pneumatic conveying pump, and the other end is connected to the second conveying pump. The hybrid shed has multiple hybrid rooms, and a negative pressure pipe is provided on the top of each hybrid room.

6. The sugarcane hybridization system according to claim 5, characterized in that: The interior of the donor room is a rectangular cavity, the bottom of the rectangular cavity is hinged with a first bucket-shaped flip cover, the bottom of the first bucket-shaped flip cover is provided with a powder collecting hole, a first limiting hole is provided above the powder collecting hole, and the negative pressure pipe is connected to the powder collecting hole.

7. The sugarcane hybridization system according to claim 6, characterized in that: A wall cleaning vibrator is provided on the inner wall of the first bucket-shaped turntable, a movable clamp is provided below the donor room, and a powder exciting vibrator is provided on the movable clamp.

8. The sugarcane hybrid system according to claim 7, characterized in that: A filter screen is provided on the bucket-shaped flip cover, and the filter screen is located above the powder collecting hole. A second limiting hole is provided on the filter screen, and the second limiting hole is aligned with the first limiting hole.

9. The sugarcane hybridization system according to claim 8, characterized in that: The structure of the hybridization room is the same as that of the donor room. A second bucket-shaped flip cover is hinged below the rectangular cavity of the hybridization room, and a second limiting hole is provided at the bottom of the second bucket-shaped flip cover.

10. The sugarcane hybridization system according to claim 5, characterized in that: A first electric heating tube and a first water mist tube are provided in the pollen collection box, and a second electric heating tube and a second water mist tube are provided in the hybridization room.

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