Aeration type phyllostachys praecox fertilizing device

Abstract

The utility model provides an aeration type phyllostachys praecox fertilizing device, and belongs to the technical field of phyllostachys praecox planting. Comprising a feeding valve, a connecting frame and a hollow inserting rod, the feeding valve comprises a valve body and a plunger longitudinally connected into the valve body in a sliding mode, the connecting frame is connected with the outer wall of the valve body and the upper end of the inserting rod, a liquid inlet valve cavity and a material mixing valve cavity located below the liquid inlet valve cavity are formed between the valve body and the plunger, and the liquid inlet valve cavity is connected with the water outlet end of a water pump. The water inlet end of the water pump is connected with the liquid fertilizer storage box, the valve body is provided with a one-way air inlet valve connected with the mixing valve cavity and the atmosphere, and the mixing valve cavity is further connected with the upper end of the insertion rod; the plunger is provided with a first liquid inlet channel which can be communicated with the liquid inlet valve cavity and the material mixing valve cavity, an inlet of the first liquid inlet channel is located in the wall face of the plunger, and a first pre-tightening spring is connected between the top of the plunger and the valve body.

Description

Technical Field

[0001] The utility model belongs to the technical field of praecox planting and relates to an aeration type praecox fertilizing device. Background Art

[0002] Phyllostachys praecox belongs to the Poaceae family. It is an excellent bamboo species for producing bamboo shoots earlier among scattered bamboo species. It is widely distributed in the area south of the Yangtze River. There are two varieties of Phyllostachys praecox, namely broad-leaved Phyllostachys praecox and fine-leaved Phyllostachys praecox. The shoots of fine-leaved Phyllostachys praecox are 10 to 15 days earlier than those of broad-leaved Phyllostachys praecox. The shoots taste sweet and tender, the yield is high, and the economic benefits are higher than those of broad-leaved Phyllostachys praecox. Therefore, fine-leaved Phyllostachys praecox is widely planted. Its shoots have the advantages of high yield, delicious taste, and significant economic benefits. The bamboo shoots are tender, crispy and refreshing, with high nutritional value. They have always been loved by people and are regarded as mountain delicacies and high-quality forest products. They are my country's traditional bulk export agricultural and forestry products.

[0003] Chongyang County, Xianning City, serves as a model for rural revitalization through the use of the thallium bamboo industry. Since its introduction in 1994, the county has developed the largest contiguous thallium bamboo cultivation area, spanning over 40,000 mu (approximately 16,000 hectares) and producing 15 million jin (approximately 200 kg) of fresh bamboo shoots annually. This industry has enabled local villagers to escape poverty and achieve prosperity, leading to a well-off society and a stable and fulfilling life.

[0004] Bamboo shoots are large and robust, with thin shells and thick flesh. They are delicious and nutritious, rich in fiber, vitamins, and amino acids. Under natural conditions (for example, in southern Hubei), bamboo shoots emerge from the ground when temperatures reach 10°C between late February and early March, missing the optimal time for market entry during the Spring Festival. Through appropriate fertilization and temperature-controlling mulching techniques, the shoot emergence period can be advanced, yields increased, and shoots of superior quality can be achieved, thus meeting demand for bamboo shoots during the Spring Festival and significantly increasing economic benefits. This is a key research direction in the economic cultivation of bamboo. However, this approach is currently relatively costly, and bamboo shoot yields before the natural shoot emergence period are still suboptimal. Utility Model Content

[0005] The purpose of the utility model is to provide an aeration type fertilizing device for bamboo shoots in view of the above problems existing in the existing technology, so as to reduce fertilizer loss, loosen the soil, increase the oxygen content of the soil and optimize the environment for bamboo shoots.

[0006] The objectives of the utility model can be achieved through the following technical solutions: an aerated bamboo fertilizing device, characterized in that it includes a feed valve, a connecting frame and a hollow plug rod, the feed valve including a valve body and a plunger longitudinally slidably connected to the valve body, the connecting frame connects the outer wall of the valve body and the upper end of the plug rod, a liquid inlet valve cavity and a mixing valve cavity located below the liquid inlet valve cavity are formed between the valve body and the plunger, the liquid inlet valve cavity is connected to the water outlet end of a water pump, the water inlet end of the water pump is connected to the liquid fertilizer storage tank, the valve body is provided with a one-way air inlet valve connecting the mixing valve cavity and the atmosphere, the mixing valve cavity is also connected to the upper end of the plug rod; the plunger is provided with a first liquid inlet channel that can connect the liquid inlet valve cavity and the mixing valve cavity, the inlet of the first liquid inlet channel is located on the wall surface of the plunger, and a preload spring is connected between the top of the plunger and the valve body.

[0007] Furthermore, the lower end of the connecting frame is provided with a material storage cavity, the material storage cavity is connected to the upper end of the insertion rod, and the mixing valve cavity and the material storage cavity are connected via a hose.

[0008] Furthermore, there is a boosting chamber in the plunger, a breathing hole is provided at the top of the boosting chamber, a piston slides longitudinally in the boosting chamber, a preload spring 2 is connected between the upper end of the piston and the plunger, and a second liquid inlet channel is provided below the piston that can be connected to the liquid inlet valve chamber, the inlet of the second liquid inlet channel is located on the wall surface of the plunger, and the inlet of the second liquid inlet channel is located above the inlet of the first liquid inlet channel.

[0009] A boost chamber is provided here. On the one hand, the boost chamber can increase the displacement and pressure of the plunger when it moves downward, and on the other hand, it can extend the pressure storage market of the liquid inlet valve chamber, so that the plunger can be effectively reset and adapt to the continuous delivery of high-pressure water. Especially when the plunger moves downward, the upward movement of the piston can temporarily maintain the pressure in the liquid inlet valve chamber lower than the preload force of the preload spring, thereby ensuring that the pressure of the plunger moving downward is greater.

[0010] Furthermore, the connecting frame includes two connecting plates, the upper ends of the two connecting plates are hinged to the outer wall of the valve body, the lower ends of the two connecting plates are connected to the shell of the storage chamber, and the two connecting plates and the shell of the storage chamber form a pressing force part.

[0011] Furthermore, a limit plate sleeved outside the valve body is connected between the two connecting plates.

[0012] During handheld operations, in order to adapt to the slope of the forest and the irregularity of the ground, the insertion rod is sometimes not inserted into the soil horizontally. Therefore, in order to improve the portability of the operation and optimize the operational sensitivity, there is a certain angle of swing between the connecting frame and the valve body, and the limit plate limits the swing amplitude.

[0013] Furthermore, the insertion rod includes a rod body, a material hole located in the rod body, and an anti-blocking structure located at the lower end of the insertion rod. The anti-blocking structure includes a conical plug with a large diameter end facing downward, a pull rod and a spring. The spring is fixed to the middle part of the rod body. A number of through holes are opened on the spring. The spring is connected to the upper end of the pull rod, and the conical plug is connected to the lower end of the pull rod. The spring can drive the plug to seal the lower end of the material hole.

[0014] During the continuous insertion and pulling process, in order to prevent soil from entering the insertion rod, an anti-blocking structure is provided at its outlet. Under normal circumstances, the spring drives the conical plug to block the opening at the lower end of the insertion rod. The conical plug can only be opened when the hydraulic pressure is greater than the pre-tightening force of the spring. Therefore, it is ensured that water vapor is sprayed out when the conical plug is opened to prevent soil from entering. When there is no water vapor pressure driving the conical plug to seal the lower end opening of the insertion rod; the conical plug can also disperse and guide the water vapor to a certain extent, and the water vapor spraying effect and dispersion area are large.

[0015] Furthermore, the valve body has a holding portion.

[0016] The basic operation process is as follows: hold the handle and insert the rod into the soil to a certain depth. If necessary, you can step on the pressure part with your foot to assist the rod in inserting the rod into the soil. After the water or water-based fertilizer is pressurized by the water pump, it is continuously output to the liquid inlet valve chamber. The plunger is lifted due to the increased pressure in the liquid inlet valve chamber and the preload spring 1 is compressed. When the second liquid inlet channel is connected to the liquid inlet valve chamber, the water pressure begins to act on the bottom of the piston. The piston is also lifted due to the increased water pressure and the preload spring 2 is compressed. In the above process, due to the upward movement of the plunger, a certain amount of air is inhaled into the mixing valve chamber through the one-way air inlet valve, and the air pressure is slightly lower than the atmospheric pressure. Until the entrance of the first liquid inlet channel is connected to the liquid inlet valve chamber, the liquid inlet valve chamber is instantly connected to the mixing valve chamber. Since the hydraulic pressure in the liquid inlet valve chamber is higher than that in the mixing valve chamber, the high-pressure liquid is instantly filled into the mixing valve chamber to achieve gas-liquid mixing. During the process of pressure compensation between the mixing valve chamber and the liquid inlet valve chamber, the pressure in the liquid inlet valve chamber drops instantly, and the plunger rushes down rapidly under the action of the preload spring, driving the gas-liquid mixture in the mixing valve chamber into the storage chamber, and then into the soil through the insertion rod. During the recovery process of the preload spring, the first liquid inlet channel is blocked by the valve body again, and the liquid inlet valve chamber and the mixing valve chamber are separated again, that is, the plunger is reset and enters the next cycle. By continuously delivering high-pressure liquid to the liquid inlet valve chamber, the reciprocating motion of the plunger is achieved, and the naturally inhaled air and liquid are mixed and filled into the soil. This method can not only increase the oxygen content in the soil, promote the growth of bamboo rhizomes and bamboo roots, and improve soil compaction, but also realize gas-liquid distribution and diffusion. The soil density of the inserted fertilization glue does not need to be too large, reducing damage to bamboo rhizomes or bamboo shoots during the insertion process.

[0017] In addition, compared with the broadcasting type of fertilization and watering, the above method can significantly reduce the loss and waste of fertilizer and water. Due to the existence of the spraying pressure, the depth of soil insertion can be appropriately reduced, such as controlling it at about 15 cm. The fertilization depth can exceed 25 cm, which can effectively prevent mechanical damage to the bamboo shoots. The water vapor in the soil is dispersed and applied at the same time, and the fertilizer is more evenly distributed, avoiding the blackening of the whip roots and the rot of the bamboo shoots.

[0018] Finally, loose soil is conducive to the growth of bamboo shoots, making the bamboo shoots fresh, tender, plump, high in water content and high in yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the aeration type fertilizing device for praecox.

[0020] Figure 2 It is a cross-sectional view of the aeration type fertilizing device for praecox.

[0021] Figure 3 It is a structural diagram of the feed valve in the pressure accumulation state.

[0022] Figure 4 It is a structural diagram of the feed valve in the discharge state.

[0023] Figure 5 yes Figure 2 Enlarged view of part A in the middle.

[0024] Figure 6 It is a structural diagram of the reed.

[0025] In the figure, 1. feed valve; 11. valve body; 12. plunger; 13. liquid inlet valve chamber; 14. mixing valve chamber; 15. one-way air inlet valve; 16. first liquid inlet channel; 17. preload spring 1; 21. boost chamber; 22. piston; 23. preload spring 2; 24. second liquid inlet channel; 3. connecting frame; 31. material storage chamber; 32. hose; 33. connecting plate; 34. pressing force part; 35. limit plate; 4. insertion rod; 41. rod body; 42. material hole; 43. conical plug; 44. pull rod; 45. reed; 5. holding part. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] like Figures 1-6As shown, the aeration type Leizhu fertilizing device includes a feed valve 1, a connecting frame 3 and a hollow plug rod 4. The feed valve 1 includes a valve body 11 and a plunger 12 longitudinally slidably connected to the valve body 11. The connecting frame 3 connects the outer wall of the valve body 11 and the upper end of the plug rod 4. A liquid inlet valve chamber 13 and a mixing valve chamber 14 located below the liquid inlet valve chamber 13 are formed between the valve body 11 and the plunger 12. The liquid inlet valve chamber 13 is connected to the water outlet end of a water pump, and the water inlet end of the water pump is connected to the liquid fertilizer storage tank. The valve body 11 is provided with a one-way air inlet valve 15 connecting the mixing valve chamber 14 and the atmosphere. The mixing valve chamber 14 is also connected to the upper end of the plug rod 4; the plunger 12 is provided with a first liquid inlet channel 16 that can connect the liquid inlet valve chamber 13 and the mixing valve chamber 14. The inlet of the first liquid inlet channel 16 is located on the wall surface of the plunger 12, and a preload spring 17 is connected between the top of the plunger 12 and the valve body 11; the valve body 11 is provided with a holding portion 5.

[0028] The lower end of the connecting frame 3 has a material storage chamber 31 , which is connected to the upper end of the insert rod 4 . The mixing valve chamber 14 and the material storage chamber 31 are connected via a hose 32 .

[0029] The plunger 12 has a boost chamber 21 with a breathing hole at the top. A piston 22 slides longitudinally in the boost chamber 21. A preload spring 23 is connected between the upper end of the piston 22 and the plunger 12. A second liquid inlet channel 24 is provided below the piston 22, which can communicate with the liquid inlet valve chamber 13. The entrance of the second liquid inlet channel 24 is located on the wall of the plunger 12, and the entrance of the second liquid inlet channel 24 is located above the entrance of the first liquid inlet channel 16. A boost chamber 21 is provided here. The boost chamber 21 can increase the displacement and pressure of the plunger 12 when it moves downward, and can also extend the pressure storage market of the liquid inlet valve chamber 13, so that the plunger 12 can be effectively reset and adapted to the continuous delivery of high-pressure water. In particular, when the plunger 12 moves downward, the upward movement of the piston 22 can temporarily maintain the pressure in the liquid inlet valve chamber 13 lower than the preload force of the preload spring 17, thereby ensuring that the pressure of the plunger 12 moving downward is relatively large.

[0030] The connecting frame 3 includes two connecting plates 33. The upper ends of the two connecting plates 33 are hinged to the outer wall of the valve body 11. The lower ends of the two connecting plates 33 are connected to the shell of the storage chamber 31. The two connecting plates 33 and the shell of the storage chamber 31 form a pressing force portion 34. A limit plate 35 is connected between the two connecting plates 33 and is mounted on the outside of the valve body 11.

[0031] During handheld operation, in order to adapt to the slope of the forest and the irregularity of the ground, the insertion rod 4 is sometimes not inserted into the soil horizontally. Therefore, in order to improve the portability of the operation and optimize the operational sensitivity, there is a certain angle of swing between the connecting frame 3 and the valve body 11, and the limit plate 35 limits the swing amplitude.

[0032] The insertion rod 4 includes a rod body 41, a material hole 42 located in the rod body 41 and an anti-blocking structure located at the lower end of the insertion rod 4. The anti-blocking structure includes a conical plug 43 with a large diameter end facing downward, a pull rod 44 and a spring 45. The spring 45 is fixed to the middle part of the rod body 41. A number of through holes are opened on the spring 45. The spring 45 is connected to the upper end of the pull rod 44, and the conical plug 43 is connected to the lower end of the pull rod 44. The spring 45 can drive the plug to seal the lower end of the material hole 42.

[0033] During the continuous pulling and inserting process, in order to prevent soil from entering the insertion rod 4, an anti-blocking structure is provided at its outlet. Under normal circumstances, the spring 45 drives the conical plug 43 to block the opening at the lower end of the insertion rod 4. The conical plug 43 can only be opened when the hydraulic pressure is greater than the pre-tightening force of the spring 45. Therefore, it is ensured that water vapor is sprayed out when the conical plug 43 is opened to prevent soil from entering, and there is no water vapor pressure driving the conical plug 43 to seal the lower end opening of the insertion rod 4; the conical plug 43 can also disperse and guide the water vapor to a certain extent, and the water vapor spraying effect and dispersion area are large.

[0034] The basic operation process is as follows: hold the handle 5 and insert the rod 4 into the soil to a certain depth. If necessary, you can step on the pressure part 34 with your foot to assist the rod 4 to improve the ease of inserting the rod 4 into the soil; after the water or water fertilizer is pressurized by the water pump, it is continuously output to the liquid inlet valve chamber 13. The plunger 12 is lifted due to the increased pressure in the liquid inlet valve chamber 13 and compresses the preload spring 17. When the second liquid inlet channel 24 is connected to the liquid inlet valve chamber 13, the water pressure begins to act on the bottom of the piston 22. The piston 22 is also lifted due to the increased water pressure and compresses the preload spring 23. In the above process, due to the upward movement of the plunger 12, a certain amount of air is inhaled into the mixing valve chamber 14 through the one-way air inlet valve 15, and the air pressure is slightly lower than the atmospheric pressure. Until the inlet of the first liquid inlet channel 16 is connected to the liquid inlet valve chamber 13, the liquid inlet valve chamber 13 is instantly connected to the mixing valve chamber 14. Since the hydraulic pressure in the liquid inlet valve chamber 13 is higher than that in the mixing valve chamber 14, the high-pressure liquid is instantly filled into the mixing valve chamber 14. When the gas and liquid are mixed, the pressure in the liquid inlet valve chamber 13 is reduced instantly during the pressure compensation between the mixing valve chamber 14 and the liquid inlet valve chamber 13. The plunger 12 rushes down rapidly under the action of the preload spring 17, driving the gas-liquid mixture in the mixing valve chamber 14 into the storage chamber 31, and then rushing into the soil through the insertion rod 4. During the recovery of the preload spring 17, the first liquid inlet channel 16 is blocked by the valve body 11 again, and the liquid inlet valve chamber 13 and the mixing valve chamber 14 are separated again, that is, the plunger 12 is reset and enters the next cycle. By continuously delivering high-pressure liquid to the liquid inlet valve chamber 13, the reciprocating motion of the plunger 12 is realized, and the naturally inhaled air and liquid are mixed and filled into the soil. This method can not only increase the oxygen content in the soil, promote the growth of bamboo rhizomes and bamboo roots, and improve soil compaction, but also realize gas-liquid distribution and diffusion. The soil density of the inserted fertilizer glue does not need to be too large, reducing the damage to bamboo rhizomes or bamboo shoots during the insertion process.

[0035] In addition, compared with the broadcasting type of fertilization and watering, the above method can significantly reduce the loss and waste of fertilizer and water. Due to the existence of the spraying pressure, the depth of soil insertion can be appropriately reduced, such as controlling it at about 15 cm. The fertilization depth can exceed 25 cm, which can effectively prevent mechanical damage to the bamboo shoots. The water vapor in the soil is dispersed and applied at the same time, and the fertilizer is more evenly distributed, avoiding the blackening of the whip roots and the rot of the bamboo shoots.

[0036] The fertilization method for the bamboo forest using the aeration fertilization device is specifically performed as follows:

[0037] Water Management: Bamboo forests are evergreen and prefer moist soil, but are sensitive to waterlogging and drought. To ensure early shoot emergence, it's crucial to strengthen fertilizer and water management within the bamboo garden. Use water-saving irrigation systems to precisely irrigate the bamboo forest to be covered, ensuring it meets its water requirements throughout its growth period. Based on the growth characteristics of Phyllostachys praecox, irrigation should be carried out promptly during critical periods, such as shoot differentiation, bud enlargement, and the winter shoot season, when the soil is dry. Before covering the bamboo forest in mid-November, shoots require ample water to emerge and grow, so water thoroughly and cover immediately. Covering here refers to insulation. Straw or rice husks are used as insulation and warming materials. A double-layer mulching method is used, with a lower layer of straw, vegetable cake compost, and an upper layer of rice husks for insulation. The thickness of the mulch is generally between 15 and 45 cm. Mulching should be gradually removed before shoots naturally emerge, and all mulch should be removed by mid-to-late April. A rotational mulching system with three years of mulching and three years of rest is generally used. When digging bamboo shoots before the natural shoot period, when cracks appear on the upper husk or when people walk on the covering and feel the hard top under their feet, they can remove the covering and dig out the bamboo shoots.

[0038] Fertilization of bamboo shoots: Fertilization of bamboo shoots from May to August is extremely important, as it directly affects the growth of bamboo shoots and the yield of bamboo shoots the following year. It must be applied early and heavily. The first fertilizer application should be in early May, with a 22,500 kg / hm² organic fertilizer applied. The second fertilizer application should be in late May, preferably on a rainy day, with a 300 kg / hm² high-nitrogen compound fertilizer applied. The third fertilizer application should be in late June, with a 300 kg / hm² high-nitrogen compound fertilizer applied. The fourth fertilizer application should be in late July, with a 450 kg / hm² high-nitrogen compound fertilizer applied. The fifth fertilizer application should be in late August, with a 450 kg / hm² high-nitrogen compound fertilizer applied.

[0039] Fertilizer for bamboo shoots: In late September, the temperature gradually drops, the growth of bamboo rhizomes slows down, and it enters the bamboo shoot differentiation period. 450kg / hm2 of high-nitrogen compound fertilizer should be applied.

[0040] Warming fertilizer: Applying heat before mulching can raise ground temperature, accelerate shoot differentiation and expansion, and bring about earlier shoot emergence. Fertilization should be done in early November. During mulching, apply 7500kg / hm2 of unfermented cake fertilizer and 750kg / hm2 of high-potassium compound fertilizer.

[0041] Bamboo shoot hole fertilizer: When applying fertilizer, avoid direct contact between the bamboo rhizomes and young shoots to prevent the rhizomes from turning black and the shoots from rotting. Fertilization should be done at the end of April of the following year. After removing the husks, apply 300kg / hm2 of urea.

[0042] The compound fertilizer, water and urea are all applied by an aeration fertilization device, and the depth of the rod 4 into the soil is controlled between 10 and 20 mm; the peak discharge pressure at the outlet of the rod 4 is 1.5 to 4 atmospheres.

[0043] This new method adjusts the traditional three- or four-time fertilization method to eight times a year. This method of applying small amounts of fertilizer multiple times prolongs the duration of fertilizer effectiveness and promotes efficient fertilizer utilization without increasing the total amount of fertilizer. This is especially true from May to August, which is directly related to bamboo shoot growth and the following year's bamboo shoot yield. Heavy and early fertilization is essential to continuously replenish soil nutrients and maintain a high and stable bamboo shoot yield.

[0044] By combining measures such as forest land selection, weeding, bamboo forest covering, bamboo shoot harvesting, and pest and disease control, the bamboo shoot yield per mu can reach more than 2,500 kilograms per mu. With appropriate adjustments based on local conditions and time, the bamboo shoot yield before the Spring Festival can account for no less than one-fifth of the total, and the bamboo shoots will have good appearance and taste, and have high economic benefits.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. An aeration type fertilizing device for Phyllostachys praecox, characterized in that: The invention comprises a feed valve (1), a connecting frame (3) and a hollow plug rod (4), wherein the feed valve (1) comprises a valve body (11) and a plunger (12) longitudinally slidably connected to the valve body (11), the connecting frame (3) connects the outer wall of the valve body (11) and the upper end of the plug rod (4), and a liquid inlet valve cavity (13) and a mixing valve cavity (14) located below the liquid inlet valve cavity (13) are formed between the valve body (11) and the plunger (12), the liquid inlet valve cavity (13) is connected to the water outlet end of a water pump, and the water inlet end of the water pump is connected to the mixing valve cavity (14). A liquid fertilizer storage tank, wherein the valve body (11) is provided with a one-way air inlet valve (15) connecting a mixing valve chamber (14) and the atmosphere, and the mixing valve chamber (14) is also connected to the upper end of the plug rod (4); the plunger (12) is provided with a first liquid inlet channel (16) capable of connecting the liquid inlet valve chamber (13) and the mixing valve chamber (14), the inlet of the first liquid inlet channel (16) is located on the wall surface of the plunger (12), and a preload spring (17) is connected between the top of the plunger (12) and the valve body (11).

2. The aeration type fertilizing device for Phyllostachys praecox according to claim 1, characterized in that: The lower end of the connecting frame (3) is provided with a material storage chamber (31), the material storage chamber (31) is connected to the upper end of the insertion rod (4), and the mixing valve chamber (14) and the material storage chamber (31) are connected via a hose (32).

3. The aeration type fertilizing device for Phyllostachys praecox according to claim 2, characterized in that: The plunger (12) has a boost chamber (21) therein, a breathing hole is provided at the top of the boost chamber (21), a piston (22) slides longitudinally in the boost chamber (21), a second preload spring (23) is connected between the upper end of the piston (22) and the plunger (12), a second liquid inlet channel (24) is provided below the piston (22) and is communicated with the liquid inlet valve chamber (13), the inlet of the second liquid inlet channel (24) is located on the wall surface of the plunger (12), and the inlet of the second liquid inlet channel (24) is located above the inlet of the first liquid inlet channel (16).

4. The aeration type fertilizing device for Phyllostachys praecox according to claim 2, characterized in that: The connecting frame (3) includes two connecting plates (33), the upper ends of the two connecting plates (33) are hinged to the outer wall of the valve body (11), the lower ends of the two connecting plates (33) are connected to the shell of the storage chamber (31), and the two connecting plates (33) and the shell of the storage chamber (31) form a pressing force portion (34).

5. The aeration type fertilizing device for Phyllostachys praecox according to claim 4, characterized in that: A limiting plate (35) sleeved outside the valve body (11) is connected between the two connecting plates (33).

6. The aeration type fertilizing device for Phyllostachys praecox according to claim 1, characterized in that: The insert rod (4) includes a rod body (41), a material hole (42) located in the rod body (41) and an anti-blocking structure located at the lower end of the insert rod (4), the anti-blocking structure includes a conical plug (43) with a large diameter end facing downward, a pull rod (44) and a spring (45), the spring (45) is fixed to the middle part of the rod body (41), a plurality of through holes are opened on the spring (45), the spring (45) is connected to the upper end of the pull rod (44), the conical plug (43) is connected to the lower end of the pull rod (44), and the spring (45) can drive the plug to seal the lower end of the material hole (42).

7. The aeration type fertilizing device for Phyllostachys praecox according to claim 1, characterized in that: The valve body (11) is provided with a holding portion (5).

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