Seedling raising device and seedling raising method for ancient cypress tree seeds

Abstract

The invention discloses a seedling raising device and a seedling raising method for ancient cypress tree seeds in regale, and relates to the technical field of seedling raising. According to the ancient cupressus chengiana tree seed seedling raising device, water can be directly supplemented to the bottom layer of soil, and water can be directly supplemented to root systems of seedlings conveniently; moreover, gas exchange in the seedling culture cavity is facilitated, and turbid air in the seedling culture cavity can be exhausted. A seedling raising method for ancient cypress tree seeds includes the steps of cones picking, seed treatment, seed germination acceleration, matrix preparation, matrix disinfection, tray loading and sowing, soil covering and compacting, seedling management, seedling hardening and transplanting and seedling management, mountain brown soil in an arid valley area is adopted as the matrix, screening is conducted, a proper amount of organic fertilizer is added, and therefore good air permeability and water retention are guaranteed; the growth requirements of ancient tree seeds are met; after sowing, slightly covering the seeds with fine soil so as to facilitate the respiration of the seeds; in the seedling stage, a ventilation deslagging mechanism is adopted for ventilation, thinning, seedling supplementing and water supplementing are conducted in good time, and healthy growth of nursery stocks is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of seedling cultivation, and in particular to a seedling cultivation device and a seedling cultivation method for ancient Minjiang cypress trees. Background Art

[0002] Minjiang cypress is a tree of the genus Cupressaceae. It is a rare and endangered species in China, a national second-level key protected wild plant, and a Sichuan-Gansu endemic species. It is distributed in the Minjiang River, Dadu River and Bailong River basins, and generally grows on dry sunny slopes at an altitude of 1200-2900m. Due to the economic and ecological value of ancient cypress, its seed seedling technology has become an important field in forestry research and practice. In terms of seedling technology, the collection, processing, sowing and seedling management of ancient Minjiang cypress seeds need to be precisely controlled to ensure high survival rate and afforestation preservation rate. For example, seed collection is usually carried out after the cones are mature, and it is strictly forbidden to destroy branches and pick fruits; treatment methods may include soaking, germination, etc. to improve the germination rate; sowing time, seedbed preparation, soil thickness and seedling management (weeding, loosening, irrigation, fertilization) will affect the growth of seedlings.

[0003] In the existing seedling raising device, when the seeds are raised in the seedling raising box, water is usually irrigated on the upper layer of the soil using a water pump and a water pipe, which easily leads to the situation that the water is too little and the seeds are not watered thoroughly, or too much water and the roots are soaked and rotten. At the same time, some volatile substances such as ethylene and ammonia (a gas that is easily produced after using organic fertilizers) are generated during the seedling raising process. However, the existing seedling raising box cannot effectively ventilate the seedling raising box, and the seedling raising box is easily affected by the air environment, resulting in poor seed cultivation effect, affecting the subsequent growth of the seeds, and even affecting the health of the staff. Summary of the invention

[0004] The object of the present invention is to provide a device and method for raising seedlings of ancient Minjiang cypress trees, so as to solve the problems mentioned in the background technology.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A seedling raising device for ancient Minjiang cypress trees, comprising a seedling raising box, and further comprising: two partitions arranged in the seedling raising box and close to two side walls respectively, a plurality of push-pull plates slidably arranged on the two partitions, and a seedling raising box arranged on the push-pull plates, wherein the two partitions divide the seedling raising box into a first ventilation chamber, a seedling raising chamber, and a second ventilation chamber from left to right;

[0007] Ventilation holes are provided on the partition, and ventilation fans are installed on the ventilation holes. Ventilation and slag removal mechanisms for ventilating the seedling chamber are vertically arranged in the first ventilation chamber and the second ventilation chamber respectively. The ventilation holes are connected with the ventilation and slag removal mechanisms through connecting pipes. The bottom end of the ventilation and slag removal mechanism passes through the bottom side wall of the seedling box and is connected to the outside, and the top end of the ventilation and slag removal mechanism passes through the top plate of the seedling box and is connected to the outside.

[0008] Furthermore, the above-mentioned seedling box includes a seedling tube arranged on the push-pull plate, a water-absorbing cotton arranged on the inner bottom wall of the seedling tube, a seedling tray located in the seedling tube and in contact with the top of the water-absorbing cotton, and a vertical clamping rod symmetrically arranged on both sides of the top of the seedling tray and clamped with the top of the seedling tube;

[0009] At least two groups of arc-shaped water-adding grooves are axially provided on the top of the seedling tube, a mounting groove for arranging water-absorbing cotton is radially provided on the inner bottom wall of the seedling tube, a water inlet hole connected to the mounting groove is provided on the bottom wall of the arc-shaped water-adding groove, a plurality of water holes are provided on the seedling tray, and a plurality of extrusion blocks for extruding the water-absorbing cotton are provided at the bottom of the seedling tray.

[0010] Furthermore, the bottom of the arc-shaped water adding groove is in contact with the circumferential top surface of the absorbent cotton.

[0011] Furthermore, the above-mentioned ventilation and slag removal mechanism includes a ventilation and slag removal pipe vertically arranged in the first ventilation cavity / second ventilation cavity, a through rod axially slidably arranged in the center of the ventilation and slag removal pipe, and a plurality of scraping components arranged on the outer wall of the through rod in sequence from top to bottom. The bottom end of the ventilation and slag removal pipe penetrates the bottom side wall of the seedling box and extends to the outside, the top end of the ventilation and slag removal pipe passes through the top plate of the seedling box and is connected to the outside, the ventilation hole is connected to the ventilation and slag removal pipe through a connecting pipe, the bottom of the through rod passes through the ventilation and slag removal pipe and contacts with the bottom of the seedling box, and the top of the through rod penetrates the top of the seedling box and extends to the outside.

[0012] Furthermore, the scraping assembly includes a plurality of inclined triangular plates circumferentially spaced apart on the outer wall of the through-rod, the end of the inclined triangular plate away from the through-rod contacts the inner wall of the ventilation and slag discharge pipe, and the inclined triangular plate is inclined downwardly along the end away from the through-rod.

[0013] Furthermore, the obtuse-angled ends of the inclined triangular plates are arranged upward, and all the inclined triangular plates in the same group of scraping assemblies are evenly distributed along the circumference of the penetrating rod.

[0014] Furthermore, the ventilation and slag removal mechanism also includes a rotating rod arranged on the rotating shaft of the ventilation fan and corresponding to the through rod, a pushing plate arranged at the end of the rotating rod close to the through rod, and a plurality of bent baffles circumferentially spaced on the outer wall of the through rod and corresponding to the pushing plate. There are two groups of pushing plates which are symmetrically distributed on both sides of the rotating rod.

[0015] Furthermore, the above-mentioned bending baffle includes a vertical portion and an inclined portion connected to the top of the vertical portion. The vertical portion and the inclined portion are both arranged on the outer wall of the through rod and correspond to the pushing plate. The inclined portion is arranged obliquely upward in a direction away from the vertical portion, and the inclined bottom surface of the inclined portion is located on the circular rotation path of the pushing plate.

[0016] Furthermore, the top of the above-mentioned seedling box is provided with an air hole corresponding to and connected with the top end of the ventilation and slag discharge pipe, the air hole on the top of the seedling box is installed with an activated carbon filter plate, and a transparent window is provided on the front side of the seedling box;

[0017] The number of ventilation fans is equal to the number of push-pull plates, and the number of scraper assemblies is equal to the number of ventilation fans.

[0018] The present invention also provides a method for raising seedlings of ancient Minjiang cypress trees, comprising the following steps:

[0019] S1. Cones are picked after they are ripe. They are lifted to the firm part by crane and picked with high-branch shears. Alternatively, tarpaulins are laid within 10m outside the tree canopy and the cones are collected after they fall naturally.

[0020] S2, seed treatment: after the cones are dried and beaten to remove the seeds, they are blown away by wind to remove impurities, and the shriveled, moldy and undersized seeds are removed. Seeds with a 100-grain weight of ≥ 0.25 g and a diameter of ≥ 0.3 cm are selected for sowing;

[0021] S3. Prepare the seedling box and seedling box. The seedling box should be disinfected before use and soaked in a diluted bleach solution for 8 to 10 hours and then dried;

[0022] Seed germination: one day before sowing, soak the seeds to be sown in hot water with an initial temperature of 45-55℃ for 24 hours, then soak them in 600mg / L gibberellin for 2 hours, then wash and set aside;

[0023] S4. Preparation of substrate: The substrate is made of mountain brown soil from arid river valley areas, which is sieved and added with an appropriate amount of organic fertilizer to ensure good air permeability and water retention. The pH value of the substrate should be adjusted to 6.5-7.5 to meet the growth requirements of ancient tree seeds;

[0024] Substrate disinfection, every 1m 3 The soil is fully mixed with 100g of ferrous sulfate, and then covered with plastic film and piled for 3-5 days, and then spread out in the sun for 1-2 days before use;

[0025] S5. Place seeds on trays. Take a water-absorbing pad and lay it on top of the seedling tray in the seedling box. Place the prepared substrate into the seedling box. Be careful not to over-compress it to facilitate root extension. When sowing, place 10 to 20 ancient tree seeds in each hole to ensure sufficient germination rate.

[0026] S6. Cover the soil and compact it. After sowing, lightly cover the seeds with fine soil with a thickness of 0.5 to 1 cm to facilitate seed breathing.

[0027] S7. Management during the seedling stage: After sowing, the seedling box should be irrigated with clean water in time, and the substrate should be kept moist. A ventilation fan should be used for regular ventilation. The ventilation fan will discharge the turbid air into the connecting pipe and discharge it to the outside of the seedling box through the ventilation and slag discharge mechanism.

[0028] Further observe the germination of seeds, carry out thinning and restocking in a timely manner, and replenish water from the arc-shaped water tank in the seedling box in real time to ensure the healthy growth of seedlings;

[0029] S8, hardening and transplanting. When the seedlings grow to more than 5 cm and have a well-developed root system, hardening treatment is carried out, and the frequency of watering is gradually reduced to enhance the stress resistance of the seedlings. After hardening, according to the growth of the seedlings and the cultivation plan, they are transplanted to containers before the fall turns to winter or before the buds sprout in the spring of the second year to continue to cultivate into seedlings. The container specifications are non-woven nutrient bags with a diameter of 15 cm and a height of 20 cm.

[0030] S9. Seedling management: manual soil loosening and weeding, weeding whenever you see it;

[0031] Water management: From May to September, water once every 10 to 15 days, before 08:00 or after 18:00; from October to November, water once every 20 to 30 days, between 15:00 and 17:00; water in winter before the soil freezes, and water again after the soil thaws in the spring of the following year;

[0032] Fertilization: No additional fertilizer is applied during the entire seedling management period to inhibit excessive growth and increase the lignification and stress resistance of the seedlings.

[0033] The present invention has the following beneficial effects:

[0034] 1. The seedling raising device for ancient Minjiang cypress trees of the present invention is provided with a push-pull plate slidingly arranged on two partitions. When the push-pull plate is pulled, the seedling box can be driven to move, thereby facilitating the observation of the seedling raising situation in the seedling raising box, and facilitating timely water replenishment and later transplanting. Moreover, through the seedling raising box, water can be directly replenished to the bottom layer of the soil, which is convenient for directly replenishing water to the root system of the seedlings; by arranging a ventilation and slag discharge mechanism, gas exchange in the seedling raising chamber is convenient, and turbid air in the seedling raising chamber can be discharged, thereby ensuring the air quality in the seedling raising chamber; at the same time, the dust and impurities attached to the ventilation and slag discharge mechanism can be effectively cleaned through the ventilation and slag discharge mechanism, thereby effectively improving the overall seedling raising efficiency and safety.

[0035] 2. The present invention provides a seedling raising box. When in use, a layer of absorbent pad is laid above the seedling raising tray, matrix soil is laid on the absorbent pad, and seeds are placed for seedling raising. The laying of the absorbent pad can prevent the matrix soil from clogging the water holes on the seedling raising tray, and can absorb and replenish water better. When watering, water is directly added to the arc-shaped water adding trough, and the water in the arc-shaped water adding trough flows into the absorbent cotton from the water inlet hole. Since the vertical clamping rod is clamped with the seedling raising tube, and the bottom of the seedling raising tray has an extrusion block for squeezing the absorbent cotton, the water on the absorbent cotton can be directly supplemented to the absorbent pad above the seedling raising tray through the water holes on the seedling raising tray, and the soil at the bottom is directly supplemented with water through the absorbent pad, and the water in the arc-shaped water adding trough can be gradually supplemented to the soil slowly, which can avoid excessive water supplementation at one time.

[0036] 3. The present invention is provided with a ventilation and slag removal mechanism. When the ventilation fan rotates, the turbid air in the seedling chamber can be discharged through the ventilation and slag removal pipe, thereby ensuring the air quality in the seedling chamber; due to the arrangement of the through rod and the scraping assembly, dust and other impurities will easily adhere to the inner wall of the ventilation and slag removal pipe due to the long-term use of the device. By manually pulling the through rod up and down, the inclined triangular plate on the scraping assembly can scrape off the dust and impurities on the inner wall of the ventilation and slag removal pipe, and the scraped dust and impurities fall downward under the action of their gravity and are discharged from the bottom end of the ventilation and slag removal pipe.

[0037] 4. The present invention sets a ventilation and slag removal mechanism, and through the cooperation of a rotating rod, a pushing plate and a bent baffle plate, when the ventilation fan rotates clockwise, it drives the rotating rod to rotate, and then the rotating rod drives the pushing plate to rotate. When the pushing plate rotates, it contacts the bent baffle plate, and then drives the bent baffle plate and the through-rod to rotate. The rotation of the through-rod drives the scraper assembly to rotate, and the inclined triangular plate and the bent baffle plate on the scraper assembly rotate, which can further increase the air circulation speed in the ventilation and slag removal pipe, and facilitate the acceleration of gas exchange in the seedling chamber; at the same time, when the scraper assembly rotates, the dust and impurities on the inner wall of the ventilation and slag removal pipe can be further scraped off, thereby improving the work efficiency and ensuring the ventilation smoothness of the ventilation and slag removal pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the overall external structure of the seedling box;

[0039] Figure 2 This is a schematic diagram of the internal structure of the seedling box;

[0040] Figure 3 It is a structural diagram of the seedling box;

[0041] Figure 4 It is a schematic diagram of the cross-sectional structure of the seedling raising box;

[0042] Figure 5 It is a structural schematic diagram of the ventilation and slag removal mechanism;

[0043] Figure 6 It is a specific structural diagram of the ventilation and slag removal mechanism;

[0044] Figure 7 It is a schematic diagram of the local structure of the ventilation and slag removal mechanism.

[0045] In the figure: 1. Seedling box; 11. First ventilation cavity; 12. Seedling cavity; 13. Second ventilation cavity; 2. Partition; 21. Ventilation hole; 3. Push-pull plate; 4. Seedling box; 41. Seedling tube; 42. Water-absorbing cotton; 43. Seedling tray; 44. Vertical clamping rod; 45. Arc-shaped water-adding groove; 451. Water inlet hole; 46. Mounting groove; 47. Water hole; 48. Extrusion block; 5. Ventilation fan; 6. Ventilation and slag discharge mechanism; 61. Ventilation and slag discharge pipe; 62. Through rod; 63. Scraping assembly; 64. Rotating rod; 65. Push plate; 66. Bending baffle; 661. Vertical part; 662. Inclined part; 7. Connecting pipe; 8. Activated carbon filter plate; 9. Transparent window. DETAILED DESCRIPTION

[0046] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0047] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a seedling raising device for ancient Minjiang cypress trees, comprising a seedling raising box 1, two partitions 2 arranged in the seedling raising box 1 and respectively close to the two side walls, the two partitions 2 divide the seedling raising box 1 into a first ventilation chamber 11, a seedling raising chamber 12 and a second ventilation chamber 13 from left to right; a plurality of push-pull plates 3 slidingly arranged on the two partitions 2, and a seedling raising box 4 arranged on the push-pull plates 3; specifically, the two partitions 2 are symmetrically provided with slide grooves matching the push-pull plates 3, and the height of the slide grooves matches the thickness of the push-pull plates 3, so it is convenient to pull the push-pull plates 3 and drive the seedling raising box 4 to move, and then it is convenient to observe the seedling raising situation in the seedling raising box 4; and through the seedling raising box 4, water can be directly replenished to the bottom layer of the soil, which is convenient for directly replenishing water to the root system of the seedlings.

[0048] Specifically, the partition 2 is provided with ventilation holes 21, and a ventilation fan 5 is installed on the ventilation hole 21. The number of the ventilation fan 5 is equal to the number of the push-pull plates 3, and the ventilation holes 21 are arranged at intervals from the push-pull plates 3. The ventilation fan 5 is connected to the external power supply through a cable to realize rotation. In this embodiment, the push-pull plates 3 are provided with three groups, and the corresponding ventilation fans 5 and ventilation holes 21 are also provided with three groups; the first ventilation cavity 11 and the second ventilation cavity 13 are respectively vertically provided with a ventilation and slag removal mechanism 6 for ventilating the seedling chamber 12, and the ventilation hole 21 is connected to the ventilation and slag removal mechanism 6 through a connecting pipe 7. The bottom end of the ventilation and slag removal mechanism 6 passes through the bottom side wall of the seedling box 1 and is connected to the outside, and the top end of the ventilation and slag removal mechanism 6 passes through the top plate of the seedling box 1 and is connected to the outside. The ventilation and slag removal mechanism 6 is used to ventilate the seedling chamber 12, discharge the turbid air in the seedling chamber 12, ensure the air quality in the seedling chamber 12, and effectively improve the overall seedling efficiency and safety.

[0049] like Figure 3 and Figure 4 As shown, the seedling box 4 includes a seedling tube 41 arranged on the push-pull plate 3, the seedling tube 41 is a cylindrical structure with an opening at the top; a water-absorbing cotton 42 arranged on the inner bottom wall of the seedling tube 41; a seedling tray 43 located in the seedling tube 41 and in contact with the top of the water-absorbing cotton 42, the water-absorbing cotton 42 and the seedling tray 43 in this embodiment are both circular structures, the size of the seedling tray 43 matches the internal size of the seedling tube 41, and the diameter of the water-absorbing cotton 42 is larger than the diameter of the seedling tray 43; and a vertical clamping rod 44 symmetrically arranged on both sides of the top of the seedling tray 43 and clamped with the top of the seedling tube 41, a clamping groove is opened at the top of the seedling tube 41, the vertical clamping rod 44 is an inverted L-shaped structure, and the top of the vertical clamping rod 44 is clamped in the clamping groove at the top of the seedling tube 41. When the seedlings need to be transplanted, the vertical clamping rod 44 is loosened from the clamping slot, and the seedling tray 43 is taken out through the vertical clamping rod 44 to facilitate the subsequent transplanting of the seedlings.

[0050] At least two groups of arc-shaped water-adding grooves 45 are axially provided at the top of the seedling tube 41, and mounting grooves 46 for arranging absorbent cotton 42 are radially provided on the inner bottom wall of the seedling tube 41. A water inlet hole 451 connected to the mounting groove 46 is provided on the bottom wall of the arc-shaped water-adding groove 45. A plurality of water holes 47 are provided on the seedling tray 43, and a plurality of squeezing blocks 48 for squeezing the absorbent cotton 42 are provided at the bottom of the seedling tray 43; the bottom of the arc-shaped water-adding groove 45 contacts the circumferential top surface of the absorbent cotton 42.

[0051] When the seedling box 4 is in use, a layer of absorbent pad is laid on the top of the seedling tray 43 in advance, the matrix soil is laid on the absorbent pad, and seeds are put in for seedling cultivation. The laying of the absorbent pad can prevent the matrix soil from clogging the water holes 47 on the seedling tray 43, and can better absorb and replenish water; when watering, water is directly added to the arc-shaped water-adding groove 45, and the water in the arc-shaped water-adding groove 45 flows into the absorbent cotton 42 from the water inlet hole 451. Since the vertical clamping rod 44 is clamped with the seedling tube 41, and the bottom of the seedling tray 43 has an extrusion block 48 for squeezing the absorbent cotton 42, the water on the absorbent cotton 42 can be directly supplemented to the absorbent pad above the seedling tray 43 through the water holes 47 on the seedling tray 43, and the soil at the bottom is directly replenished with water through the absorbent pad, and the water in the arc-shaped water-adding groove 45 can be gradually supplemented to the soil slowly, which can avoid the situation of excessive one-time water replenishment.

[0052] like Figures 5 to 7 As shown, the ventilation and slag discharge mechanism 6 includes a ventilation and slag discharge pipe 61 vertically arranged in the first ventilation cavity 11 / the second ventilation cavity 13, the top of the ventilation and slag discharge pipe 61 passes through the top plate of the seedling box 1 and is connected to the outside, and the top of the seedling box 1 is provided with an air hole corresponding to and connected to the top of the ventilation and slag discharge pipe 61, and the air hole on the top of the seedling box 1 is installed with an activated carbon filter plate 8, which can filter the air entering the ventilation and slag discharge pipe 61 from the top to prevent impurities from entering the pipeline from the top, and the bottom end of the ventilation and slag discharge pipe 61 passes through the bottom side wall of the seedling box 1 and extends to the outside, and the bottom side wall of the seedling box 1 is provided with an outlet matching the bottom end of the ventilation and slag discharge pipe 61, and the ventilation hole 21 is connected to the ventilation and slag discharge pipe 61 through the connecting pipe 7; the through rod 62 axially slidably arranged in the center of the ventilation and slag discharge pipe 61, An opening is provided at the bottom of the ventilation and slag discharge pipe 61 and at the center of the pipe to facilitate the passage of the through rod 62. The bottom of the through rod 62 passes through the ventilation and slag discharge pipe 61 and contacts the bottom of the seedling box 1. The top of the through rod 62 passes through the top of the seedling box 1 and extends to the outside. A circular hole matching the through rod 62 is provided on the activated carbon filter plate 8 to facilitate the extension of the through rod 62; and a plurality of groups of scraping assemblies 63 are arranged on the outer wall of the through rod 62 in sequence from top to bottom. In this embodiment, the number of scraping assemblies 63 is equal to the number of ventilation fans 5; wherein, the scraping assemblies 63 include a plurality of inclined triangular plates circumferentially arranged on the outer wall of the through rod 62, the end of the inclined triangular plate away from the through rod 62 contacts the inner wall of the ventilation and slag discharge pipe 61, and the inclined triangular plate is arranged to be inclined downward along the end away from the through rod 62. In this embodiment, the obtuse end of the inclined triangular plate is arranged upward, and all the inclined triangular plates in the same group of scraping assemblies 63 are evenly distributed along the circumference of the through rod 62; in this way, when impurities fall on the inclined triangular plate, the impurities can slide downward along the inclined surface of the obtuse end, which facilitates the discharge of impurities.

[0053] After the device has been used for a long time, the inner wall of the ventilation and slag discharge pipe 61 is prone to adhere to dust and other impurities. In order to ensure the air quality in the seedling chamber 12, it is necessary to regularly clean the dust and impurities on the inner wall of the ventilation and slag discharge pipe 61. By manually pulling the through rod 62 up and down, the inclined triangular plate on the scraping assembly 63 can scrape off the dust and impurities on the inner wall of the ventilation and slag discharge pipe 61. The scraped dust and impurities fall downward under the action of their gravity and are discharged from the bottom end of the ventilation and slag discharge pipe 61.

[0054] like Figure 7 As shown, the ventilation and slag removal mechanism 6 also includes a rotating rod 64 arranged on the rotating shaft of the ventilation fan 5 and corresponding to the through rod 62; a pushing plate 65 arranged at the end of the rotating rod 64 close to the through rod 62, and the pushing plates 65 are provided in two groups and symmetrically distributed on both sides of the rotating rod 64; and a plurality of bent baffles 66 arranged at intervals in the circumferential direction on the outer wall of the through rod 62 and corresponding to the pushing plates 65. Specifically, the bent baffle 66 includes a vertical portion 661 and an inclined portion 662 connected to the top of the vertical portion 661, the vertical portion 661 and the inclined portion 662 are both arranged on the outer wall of the through rod 62 and corresponding to the pushing plate 65, the inclined portion 662 is arranged obliquely upward in a direction away from the vertical portion 661, and the inclined bottom surface of the inclined portion 662 is located on the circumferential rotation path of the pushing plate 65.

[0055] When the ventilation fan 5 rotates, its rotating shaft will drive the rotating rod 64 to rotate, and the rotating rod 64 will drive the pushing plate 65 to rotate. When the end of the pushing plate 65 contacts the inclined bottom surface of the inclined portion 662 in the bent baffle 66, it will push the bent baffle 66 to drive the through rod 62 to rotate. The rotation of the through rod 62 will drive the scraper assembly 63 to rotate. With the rotation of the inclined triangular plate and the bent baffle 66, the air circulation speed in the ventilation and slag discharge pipe 61 can be increased. At the same time, the scraper assembly 63 can further scrape off the dust and impurities on the inner wall of the ventilation and slag discharge pipe 61 when rotating, thereby improving the scraping efficiency and ensuring the ventilation smoothness rate of the ventilation and slag discharge pipe 61.

[0056] In order to facilitate observation of the internal seedling raising conditions of the seedling raising box 1, a transparent window 9 is provided on the front side of the seedling raising box 1.

[0057] Another embodiment of the present invention provides a method for raising seedlings of ancient Minjiang cypress trees, comprising the following steps:

[0058] S1. Cones are picked after they are ripe. They are lifted to the firm part by a crane and picked with high-branch shears. Alternatively, tarpaulins are laid within 10m outside the tree canopy and the cones are collected after they fall naturally. It is strictly forbidden to pick fruits while damaging branches.

[0059] S2, seed treatment: after the cones are dried and beaten to remove the seeds, they are blown away by wind to remove impurities, and the shriveled, moldy and undersized seeds are removed. Seeds with a 100-grain weight of ≥ 0.25 g and a diameter of ≥ 0.3 cm are selected for sowing;

[0060] S3, prepare, prepare the seedling box 1 and the seedling box 4, the seedling box 4 should be disinfected before use, soaked in a diluted bleaching solution for 8 to 10 hours and then dried;

[0061] Seed germination: one day before sowing, soak the seeds to be sown in hot water with an initial temperature of 45-55℃ for 24 hours, then soak them in 600mg / L gibberellin for 2 hours, then wash and set aside;

[0062] S4. Preparation of substrate: The substrate is made of mountain brown soil from arid river valley areas, which is sieved and added with an appropriate amount of organic fertilizer to ensure good air permeability and water retention. The pH value of the substrate should be adjusted to 6.5-7.5 to meet the growth requirements of ancient tree seeds;

[0063] Substrate disinfection, every 1m 3 The soil is fully mixed with 100g of ferrous sulfate, and then covered with plastic film and piled for 3-5 days, and then spread out in the sun for 1-2 days before use;

[0064] S5, tray sowing, take a water-absorbing pad and lay it on the top of the seedling tray 43 in the seedling box 4, put the prepared matrix into the seedling box 4, be careful not to over-compress it to facilitate the root system to stretch, when sowing, place 10 to 20 old tree seeds in each hole to ensure sufficient germination rate;

[0065] The laying of the water-absorbing pad is used to prevent the water holes 47 on the seedling tray 43 from being blocked, and is convenient for replenishing water to the substrate soil at the bottom.

[0066] S6. Covering and compacting: After sowing, lightly cover the seeds with fine soil with a thickness of 0.5 to 1 cm to facilitate seed breathing;

[0067] S7, seedling management, after sowing, the seedling box 4 should be irrigated with clean water in time, and the substrate should be kept moist, and the ventilation fan 5 should be used for regular ventilation. The ventilation fan 5 discharges the turbid air into the connecting pipe 7 and discharges it to the outside of the seedling box 1 through the ventilation and slag discharge mechanism 6;

[0068] When the inner wall of the ventilation and slag discharge pipe 61 needs to be cleaned, the through rod 62 at the top of the seedling box 1 is pulled up and down, which can drive the scraping assembly 63 to scrape off the dust and impurities attached to the inside of the ventilation and slag discharge pipe 61, and the heavy impurities will fall downward due to gravity and be discharged from the bottom of the ventilation and slag discharge pipe 61;

[0069] Start the ventilation fan 5 and make it rotate clockwise. The ventilation fan 5 rotates and drives the push plate 65 to rotate clockwise through the rotating rod 64. The push plate 65 rotates and contacts the inclined bottom surface of the inclined portion 662 in the bending baffle 66, thereby driving the bending baffle 66 to rotate. Finally, the through rod 62 is driven to rotate through the bending baffle 66. The through rod 62 rotates and drives the inclined triangular plate to rotate. Under the action of the bending baffle 66 and the inclined triangular plate, the air circulation speed in the ventilation and slag discharge pipe 61 can be increased, so that the turbid air can be discharged quickly.

[0070] Further observe the germination of seeds, carry out thinning and restocking in time, and replenish water from the arc-shaped water tank 45 in the seedling box 4 in real time to ensure the healthy growth of seedlings;

[0071] S8, hardening and transplanting. When the seedlings grow to more than 5 cm and have a well-developed root system, hardening treatment is carried out, and the frequency of watering is gradually reduced to enhance the stress resistance of the seedlings. After hardening, according to the growth of the seedlings and the cultivation plan, they are transplanted to containers before the fall turns to winter or before the buds sprout in the spring of the second year to continue to cultivate into seedlings. The container specifications are non-woven nutrient bags with a diameter of 15 cm and a height of 20 cm.

[0072] S9. Seedling management: manual soil loosening and weeding, weeding whenever you see it;

[0073] Water management: From May to September, water once every 10 to 15 days, before 08:00 or after 18:00; from October to November, water once every 20 to 30 days, between 15:00 and 17:00; water in winter before the soil freezes, and water again after the soil thaws in the spring of the following year;

[0074] Fertilization: No additional fertilizer is applied during the entire seedling management period to inhibit excessive growth and increase the lignification and stress resistance of the seedlings.

[0075] Through the above steps, the seeds of the ancient Minjiang cypress trees are treated and seedlings are grown, which improves the survival rate and healthy growth of the seeds.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A seedling raising device for ancient Minjiang cypress trees, comprising a seedling raising box (1), characterized in that: Also includes: Two partitions (2) arranged in the seedling raising box (1) and respectively close to the two side walls, a plurality of push-pull plates (3) slidably arranged on the two partitions (2), and a seedling raising box (4) arranged on the push-pull plates (3), wherein the two partitions (2) divide the seedling raising box (1) from left to right into a first ventilation chamber (11), a seedling raising chamber (12), and a second ventilation chamber (13); The partition plate (2) is provided with a ventilation hole (21), and a ventilation fan (5) is installed on the ventilation hole (21). A ventilation and slag removal mechanism (6) for ventilating the seedling raising chamber (12) is vertically arranged in the first ventilation chamber (11) and the second ventilation chamber (13), respectively. The ventilation hole (21) is connected to the ventilation and slag removal mechanism (6) through a connecting pipe (7). The bottom end of the ventilation and slag removal mechanism (6) passes through the bottom side wall of the seedling raising box (1) and is connected to the outside. The top end of the ventilation and slag removal mechanism (6) passes through the top plate of the seedling raising box (1) and is connected to the outside.

2. The device for raising seedlings of ancient Minjiang cypress trees according to claim 1, characterized in that: The seedling box (4) comprises a seedling tube (41) arranged on the push-pull plate (3), a water-absorbing cotton (42) arranged on the inner bottom wall of the seedling tube (41), a seedling tray (43) located in the seedling tube (41) and in contact with the top of the water-absorbing cotton (42), and a vertical clamping rod (44) symmetrically arranged on both sides of the top of the seedling tray (43) and clamped with the top of the seedling tube (41); At least two groups of arc-shaped water-adding grooves (45) are axially provided on the top of the seedling-raising tube (41), a mounting groove (46) for arranging the water-absorbing cotton (42) is radially provided on the inner bottom wall of the seedling-raising tube (41), a water inlet hole (451) communicating with the mounting groove (46) is provided on the bottom wall of the arc-shaped water-adding groove (45), a plurality of water holes (47) are provided on the seedling-raising tray (43), and a plurality of squeezing blocks (48) for squeezing the water-absorbing cotton (42) are provided on the bottom of the seedling-raising tray (43).

3. The device for raising seedlings of ancient Minjiang cypress trees according to claim 2, characterized in that: The bottom of the arc-shaped water adding groove (45) contacts the circumferential top surface of the water-absorbing cotton (42).

4. The device for raising seedlings of ancient Minjiang cypress trees according to any one of claims 1 to 3, characterized in that: The ventilation and slag removal mechanism (6) comprises a ventilation and slag removal pipe (61) vertically arranged in the first ventilation cavity (11) / the second ventilation cavity (13), a through rod (62) axially slidably arranged in the center of the ventilation and slag removal pipe (61), and a plurality of scraper assemblies (63) arranged on the outer wall of the through rod (62) in sequence from top to bottom. The bottom end of the ventilation and slag removal pipe (61) passes through the bottom side wall of the seedling box (1) and extends to the outside. The top end of the ventilation and slag removal pipe (61) passes through the top plate of the seedling box (1) and communicates with the outside. The ventilation hole (21) is connected to the ventilation and slag removal pipe (61) through a connecting pipe (7). The bottom of the through rod (62) passes through the ventilation and slag removal pipe (61) and contacts with the bottom of the seedling box (1). The top of the through rod (62) passes through the top of the seedling box (1) and extends to the outside.

5. The device for raising seedlings of ancient Minjiang cypress trees according to claim 4, characterized in that: The scraping assembly (63) comprises a plurality of inclined triangular plates arranged at circumferential intervals on the outer wall of the through-rod (62); the ends of the inclined triangular plates away from the through-rod (62) are in contact with the inner wall of the ventilation and slag discharge pipe (61), and the inclined triangular plates are arranged to be inclined downward along the ends away from the through-rod (62).

6. The device for raising seedlings of ancient Minjiang cypress trees according to claim 5, characterized in that: The obtuse-angled ends of the inclined triangular plates are arranged upward, and all the inclined triangular plates in the same group of the scraping assemblies (63) are evenly distributed along the circumference of the penetrating rod (62).

7. The device for raising seedlings of ancient Minjiang cypress trees according to claim 4, characterized in that: The ventilation and slag removal mechanism (6) also includes a rotating rod (64) arranged on the rotating shaft of the ventilation fan (5) and corresponding to the through rod (62), a pushing plate (65) arranged on the end of the rotating rod (64) close to the through rod (62), and a plurality of bent baffles (66) arranged at circumferential intervals on the outer wall of the through rod (62) and corresponding to the pushing plate (65), and the pushing plates (65) are provided in two groups and are symmetrically distributed on both sides of the rotating rod (64).

8. The device for raising seedlings of ancient Minjiang cypress trees according to claim 7, characterized in that: The bent baffle (66) comprises a vertical portion (661) and an inclined portion (662) connected to the top of the vertical portion (661); the vertical portion (661) and the inclined portion (662) are both arranged on the outer wall of the through rod (62) and correspond to the push plate (65); the inclined portion (662) is arranged obliquely upward in a direction away from the vertical portion (661), and the inclined bottom surface of the inclined portion (662) is located on the circular rotation path of the push plate (65).

9. The device for raising seedlings of ancient Minjiang cypress trees according to claim 4, characterized in that: The top of the seedling raising box (1) is provided with an air hole corresponding to and communicating with the top end of the ventilation and slag discharge pipe (61); the air hole at the top of the seedling raising box (1) is installed with an activated carbon filter plate (8); and the front side of the seedling raising box (1) is provided with a transparent window (9); The number of the ventilation fans (5) is equal to the number of the push-pull plates (3), and the number of the scraping components (63) is equal to the number of the ventilation fans (5).

10. A method for raising seedlings of ancient Minjiang cypress trees, characterized in that: The device for raising seedlings of ancient Minjiang cypress trees according to any one of claims 1 to 9 comprises the following steps: S1. Cones are picked after they are ripe. They are lifted to the firm part by crane and picked with high-branch shears. Alternatively, tarpaulins are laid within 10m outside the tree canopy and the cones are collected after they fall naturally. S2, seed treatment: after the cones are dried and beaten to remove the seeds, they are blown away by wind to remove impurities, and the shriveled, moldy and undersized seeds are removed. Seeds with a 100-grain weight of ≥ 0.25 g and a diameter of ≥ 0.3 cm are selected for sowing; S3, preparing, preparing the seedling box (1) and the seedling box (4), the seedling box (4) should be disinfected before use, soaked in a diluted bleach solution for 8 to 10 hours and then dried; Seed germination: one day before sowing, soak the seeds to be sown in hot water with an initial temperature of 45-55℃ for 24 hours, then soak them in 600mg / L gibberellin for 2 hours, then wash them and set aside; S4. Preparation of substrate: The substrate is made of mountain brown soil from arid river valley areas, which is sieved and added with an appropriate amount of organic fertilizer to ensure good air permeability and water retention. The pH value of the substrate should be adjusted to 6.5-7.5 to meet the growth requirements of ancient tree seeds; Substrate disinfection, every 1m 3 The soil is fully mixed with 100g of ferrous sulfate, and then covered with plastic film and piled for 3-5 days, and then spread out in the sun for 1-2 days before use; S5, tray sowing, take a water-absorbing pad and lay it on the top of the seedling tray (43) in the seedling box (4), put the prepared substrate into the seedling box (4), be careful not to over-compress it, so that the root system can stretch. When sowing, place 10 to 20 ancient tree seeds in each hole to ensure a sufficient germination rate; S6. Covering and compacting: After sowing, lightly cover the seeds with fine soil with a thickness of 0.5 to 1 cm to facilitate seed breathing; S7, seedling management, after sowing, the seedling box (4) should be irrigated with clean water in time, and the substrate should be kept moist. The ventilation fan (5) should be used for regular ventilation. The ventilation fan (5) discharges the turbid air into the connecting pipe (7) and then discharges it to the outside of the seedling box (1) through the ventilation and slag discharge mechanism (6); Further observe the germination of the seeds, perform thinning and replanting in a timely manner, and replenish water from the arc-shaped water tank (45) in the seedling box (4) in real time to ensure the healthy growth of the seedlings; S8, hardening and transplanting. When the seedlings grow to more than 5 cm and have a well-developed root system, hardening treatment is carried out, and the frequency of watering is gradually reduced to enhance the stress resistance of the seedlings. After hardening, according to the growth of the seedlings and the cultivation plan, they are transplanted to containers before the fall turns to winter or before the buds sprout in the spring of the second year to continue to cultivate into seedlings. The container specifications are non-woven nutrient bags with a diameter of 15 cm and a height of 20 cm. S9. Seedling management: manual soil loosening and weeding, weeding whenever you see it; Water management: From May to September, water once every 10 to 15 days, before 08:00 or after 18:00; from October to November, water once every 20 to 30 days, between 15:00 and 17:00; water in winter before the soil freezes, and water again after the soil thaws in the spring of the following year; Fertilization: No additional fertilizer is applied during the entire seedling management period to inhibit excessive growth and increase the lignification and stress resistance of the seedlings.

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