DRILLING AND FERTILIZING DEVICE AND FERTILIZING METHOD FOR RUBBER TREE PLANTING

The drilling and fertilizing device for rubber tree plantations addresses root damage and inefficiency by providing precise depth control and automated fertilizer distribution, improving fertilizing accuracy and efficiency.

NL4001792APending Publication Date: 2026-07-13RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI

Patent Information

Authority / Receiving Office
NL · NL
Patent Type
Applications
Current Assignee / Owner
RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
Filing Date
2026-05-26
Publication Date
2026-07-13

AI Technical Summary

Technical Problem

Traditional fertilizing methods for rubber tree plantations in inter-row regions cause root damage and result in inefficient nutrient utilization due to inconsistent drilling depths and manual operations, especially in hilly terrains, leading to low operational efficiency and poor fertilizing effects.

Method used

A drilling and fertilizing device comprising a fertilizer applicator, drilling assembly, and fertilizing assembly, with features like a lifting sleeve, elastic baffle, and rotating feed pipe, allowing precise depth control and automated fertilizer distribution into drilling holes.

Benefits of technology

The device ensures consistent drilling depths, improves fertilizing accuracy, and enhances operational efficiency by automating the process, reducing root damage and fertilizer loss, and optimizing nutrient absorption by rubber trees.

✦ Generated by Eureka AI based on patent content.

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Abstract

Disclosed in this disclosure are a drilling and fertilizing device and a fertilizing method for rubber tree planting, relating to the technical field of fertilizing devices. This disclosure includes a fertilizer applicator, a drilling assembly, and a fertilizing assembly. A mobile mounting plate moves close to a rubber tree, and an adjusting mobile block of each drilling unit moves to drive a lifting sleeve to move to a position corresponding to the rubber tree. The lifting sleeve drives a lifting drilling rod to move vertically, and the lifting sleeve stops moving after being in contact with the ground. A rotating feed pipe drives the lifting drilling rod to rotate, and the rotating feed pipe drives the lifting drilling rod to vertically move downward out of the lifting sleeve. The lifting drilling rod drives a spiral blade to rotate to drill into the ground.
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Description

1 DRILLING AND FERTILIZING DEVICE AND FERTILIZING METHOD FOR RUBBER TREE PLANTING TECHNICAL FIELD

[0001] This disclosure belongs to the technical field of fertilizing devices, and in particular, to a drilling and fertilizing device and a fertilizing method for rubber tree planting. BACKGROUND

[0002] Rubber trees are a common tree species in tropical regions and are an economic crop from which natural rubber can be extracted. The inter-row region of the rubber tree forest refers to the gap left between two rows of rubber trees in the rubber tree forest. The inter-row region of the rubber tree forest can facilitate the work of managers to inspect, prune, and fertilize, and has the functions of promoting the growth of rubber trees, facilitating management, and helping conserve soil and water resources. Currently, the common practice for fertilizing in rubber plantations is to dig fertilizing trenches on one side of a single row of rubber trees and spread organic materials and chemical fertilizer in the trenches. To improve the economic benefits of rubber trees, managers will regularly perform fertilization in the inter-row region of the forest to increase the yield of natural rubber. Rubber trees are mostly planted in tropical regions with high rainfall. When fertilizing the ground in the inter-row region of the rubber tree forest, the fertilizer spread on the surface will be washed away by rainwater, resulting in fertilizer loss and a low nutrient utilization rate of the fertilizer. In addition, most of the roots of rubber trees can grow into the underground space of the inter-row region, and their absorbing roots are mainly concentrated in the soil layer region at a depth of 10 cm to 20 cm. To improve the nutrient utilization efficiency of the rubber tree forest, managers will consider the method of deep fertilization on the ground in the inter-row region of the rubber tree forest. Because the root system of trees is relatively dense in the soil layer region at a depth of 10 cm to 20 cm from the ground in the inter-row region of the rubber tree forest, traditional topsoil tillage and fertilization methods and mechanized operations will cause a lot of damage to the root network, which seriously affects the health of rubber trees and the normal production of natural latex. Therefore, it is urgent to develop devices and fertilizing methods suitable for deep fertilization on the ground in the inter-row region of the rubber tree forest. 2

[0003] Compared to traditional fertilizing methods, the drilling and fertilizing method can not only avoid root damage caused by deep fertilization on the ground in the inter- row region of the rubber tree forest, but also allow rubber trees to absorb nutrients more efficiently. During drilling and fertilizing, periodic deep application of fertilizer is required. Employing traditional manual drilling and fertilizing is not only inefficient but also results in inconsistent depths across varying terrain, leading to poor fertilizing effects. Furthermore, existing multi-row drilling machines lack precise depth- adjustment mechanisms, making them difficult to adapt to the topographical variations found in hilly regions. Existing drilling and fertilizing practices generally involve manually importing fertilizer into the drilling holes after drilling, resulting in low operational efficiency. SUMMARY

[0004] To solve the above technical problems, this disclosure provides the following technical solutions: this disclosure provides a drilling and fertilizing device, including a fertilizer applicator, a drilling assembly, and a fertilizing assembly, where the drilling assembly includes a plurality of drilling units, and each drilling unit includes a lifting sleeve, a lifting drilling rod, an elastic baffle, a drilling rod assembling member, and a pressing block;

[0005] the lifting sleeve is disposed on the fertilizer applicator, the lifting drilling rod can extend into the lifting sleeve in a sliding matching manner, and the lifting drilling rod is hollow internally; and a side surface of the lifting drilling rod is provided with a discharge port, and the elastic baffle slides relative to the lifting drilling rod to open and close the discharge port;

[0006] the drilling rod assembling member is slidably matched with the lifting sleeve, and the drilling rod assembling member is located above and rotatably matched with the lifting drilling rod; and the drilling rod assembling member is provided with a bonding notch with a downward opening, and the pressing block is slidably mounted in the bonding notch;

[0007] during drilling, the lifting sleeve can drive the lifting drilling rod to be in contact with the ground to drive the lifting drilling rod to rotate, the pressing block is pressed against the top of the elastic baffle and ensures that the discharge port is in a closed state, and the elastic baffle has accumulated energy for upward movement;

[0008] after drilling, the pressing block moves upward, the elastic baffle releases the accumulated energy and resets upward to be bonded with the notch to limit rotation of 3 the lifting drilling rod while opening the discharge port, and fertilizer in the lifting drilling rod can flow out of the discharge port in an open state; and

[0009] the fertilizing assembly includes a plurality of fertilizing units, each fertilizing unit includes a fertilizing feed pipe and a rotating feed pipe, and the fertilizing feed pipe is disposed on the fertilizer applicator; and a fixed end of the rotating feed pipe is communicated with the lifting drilling rod, and a rotating end of the rotating feed pipe is rotatably communicated with the fertilizing feed pipe.

[0010] Preferably, the fertilizer applicator is fixedly provided with a storage tank, a top surface of the storage tank is fixedly provided with a feed hopper, a side surface of the storage tank is fixedly provided with an extraction pump, the drilling assembly further includes a mobile mounting plate, a fixed mounting plate, a mobile cylinder, and a fixed rack, the fixed mounting plate is fixedly mounted at one end of the storage tank, the mobile cylinder is fixedly mounted on a side surface of the fixed mounting plate, an output end of the mobile cylinder passes through the fixed mounting plate to be fixedly connected to the mobile mounting plate, and the fixed rack is fixedly mounted on a side surface of the mobile mounting plate.

[0011] Preferably, the drilling unit further includes an adjusting mobile block, a spiral blade, an adjusting mobile plate, an adjusting gear, an adjusting motor, an adjusting sliding block, and a lifting cylinder, the spiral blade is fixedly mounted around the lifting drilling rod, the side surface of the mobile mounting plate is provided with an irregular sliding groove, the adjusting sliding block is slidably mounted in the irregular sliding groove, the adjusting mobile plate is fixedly connected to the adjusting sliding block, an end surface of the adjusting mobile plate is provided with a gear mounting groove, the adjusting gear is rotatably mounted in the gear mounting groove, the adjusting motor is fixedly mounted on one side of the adjusting mobile plate, a driving shaft of the adjusting motor passes through the adjusting mobile plate to be fixedly connected to the adjusting gear, the adjusting gear is engaged with the fixed rack, the adjusting mobile block is fixedly mounted on a side surface of the adjusting mobile plate, a top surface of the adjusting mobile block is provided with a lifting notch, the lifting sleeve is slidably matched with the lifting notch, the lifting cylinder is fixedly mounted on a side surface of the adjusting mobile block, and a horizontal spacing between adjacent lifting sleeves can be adjusted.

[0012] Preferably, the drilling unit further includes a drilling rod annular plate, a lifting annular plate, a rotating mounting plate, a rotating ring gear, a transmission gear, a 4 rotating motor, and a lifting connecting rod, the drilling rod annular plate is slidably matched with the lifting sleeve, the drilling rod annular plate is fixedly mounted on a top surface of the lifting drilling rod, a top surface of the drilling rod annular plate is rotatably connected to a bottom surface of the lifting annular plate, the lifting annular plate is slidably mounted in the lifting sleeve, a top surface of the lifting sleeve is fixedly provided with the rotating mounting plate, the rotating feed pipe slidably passes through the rotating mounting plate to be fixedly connected to the drilling rod annular plate, the lifting annular plate is slidably sleeved on the rotating feed pipe, a lifting connecting groove is formed around the lifting sleeve, the drilling rod assembling member is slidably mounted in the lifting connecting groove, the drilling rod assembling member is fixedly connected to the lifting annular plate, a top surface of the drilling rod assembling member is fixedly provided with the lifting connecting rod, the lifting connecting rod is fixedly connected to an output end of the lifting cylinder, the rotating ring gear is slidably sleeved on the rotating feed pipe, the rotating ring gear is rotatably mounted on a top surface of the rotating mounting plate, a plurality of lifting sliding grooves are formed around the rotating feed pipe, a lifting sliding block is slidably mounted in each lifting sliding groove, the lifting sliding block is fixedly connected to the rotating ring gear, the transmission gear is rotatably mounted on the top surface of the rotating mounting plate, the transmission gear is engaged with the rotating ring gear, the rotating motor is fixedly mounted on a bottom surface of the rotating mounting plate, and a driving shaft of the rotating motor passes through the rotating mounting plate to be fixedly connected to the transmission gear.

[0013] Preferably, the drilling unit further includes a connecting mechanism, the connecting mechanism includes a lifting connecting block, a limiting connecting rod, a mobile limiting block, a limiting spring, a horizontal connecting wedge block, a lifting wedge block, and a lifting linkage rod, the lifting connecting block is fixedly mounted on a side surface of the rotating mounting plate, the limiting connecting rod slidably passes through the lifting connecting block to be fixedly connected to the drilling rod assembling member, a side surface of the limiting connecting rod is provided with a plurality of limiting grooves, the mobile limiting block is slidably mounted on a top surface of the lifting connecting block, the top surface of the lifting connecting block is fixedly provided with a spring mounting plate, one end of the limiting spring is fixedly connected to the mobile limiting block, the other end thereof is fixedly connected to the spring mounting plate, the horizontal connecting wedge block is horizontally and 5 slidably mounted on a side surface of the lifting connecting block, the horizontal connecting wedge block is fixedly connected to the mobile limiting block, the lifting wedge block is vertically and slidably mounted on the side surface of the lifting connecting block, the lifting linkage rod is fixedly mounted on a bottom surface of the lifting wedge block, and a bottom surface of the lifting linkage rod slidably passes through the adjusting mobile block.

[0014] Preferably, the connecting mechanism further includes a depth limiting plate, a depth limiting block, a reset spring, a horizontal connecting rod, a depth adjusting plate, and an adjusting cylinder, the adjusting cylinder is fixedly mounted on the side surface of the fixed mounting plate, an output end of the adjusting cylinder is fixedly connected to the depth adjusting plate, an end surface of the depth adjusting plate is provided with an adjusting linkage groove, the depth limiting plate is slidably sleeved on the limiting connecting rod, the depth limiting block is slidably mounted on a top surface of the depth limiting plate, the top surface of the depth limiting plate is fixedly provided with a spring fixed plate, one end of the reset spring is fixedly connected to the depth limiting block, the other end thereof is fixedly connected to the spring fixed plate, and the horizontal connecting rod is fixedly connected to the depth limiting block.

[0015] Preferably, the fertilizing assembly further includes a fertilizing pipe and a feed communication pipe, the elastic baffle includes a discharge baffle and a discharge spring, the discharge baffle is slidably mounted on the side surface of the lifting drilling rod, one end of the feed communication pipe is fixedly connected to the extraction pump, the other end thereof is fixedly connected to the fertilizing pipe, one end of the fertilizing feed pipe is fixedly connected to the fertilizing pipe, the other end thereof is rotatably connected to the rotating feed pipe, the fertilizing unit further includes a discharge mobile plate and a discharge cylinder, the discharge mobile plate is fixedly mounted on the discharge baffle, one end of the discharge spring is fixedly connected to the discharge mobile plate, the other end thereof is fixedly connected to the drilling rod annular plate, the discharge cylinder is fixedly mounted on the top surface of the drilling rod assembling member, an output end of the discharge cylinder is fixedly connected to the pressing block, and when the discharge baffle moves into the bonding notch and is bonded with the bonding notch, the elastic baffle cannot rotate around a central axis of the lifting drilling rod. 6

[0016] Preferably, a bottom surface of the lifting sleeve is fixedly provided with a plurality of fixed support rods, and the bottom surface of the lifting linkage rod is lower than a bottom surface of each fixed support rod.

[0017] Preferably, a height of the adjusting linkage groove is the same as a height of the horizontal connecting rod.

[0018] A fertilizing method for rubber tree planting is provided, using the above drilling and fertilizing device, and including the following steps:

[0019] before drilling, a lifting sleeve moves close to a rubber tree, the lifting sleeve of each drilling unit moves to a position corresponding to the rubber tree, the lifting sleeve drives a lifting drilling rod to move vertically, the lifting sleeve stops moving after being in contact with the ground, a rotating feed pipe drives the lifting drilling rod to rotate, the rotating feed pipe drives the lifting drilling rod to vertically move downward out of the lifting sleeve, and the lifting drilling rod drives a spiral blade to rotate to drill into the ground; and

[0020] after drilling to a certain depth, fertilizer sequentially passes through a fertilizing feed pipe and the rotating feed pipe to enter the lifting drilling rod, a pressing block moves upward, and an elastic baffle releases accumulated energy and resets upward to be bonded with a bonding notch to limit rotation of the lifting drilling rod while opening a discharge port; after the elastic baffle vertically moves upward to open the discharge port, the fertilizer can be discharged from the discharge port; and when the discharge port is opened for discharge, the lifting drilling rod vertically moves upward, and the fertilizer flows into a drilling hole, thereby completing fertilization.

[0021] Compared with the prior art, this disclosure provides a drilling and fertilizing device and a fertilizing method for rubber tree planting, having the following beneficial effects:

[0022] 1. The mobile mounting plate moves close to the rubber tree, and the adjusting mobile block of each drilling unit moves to drive the lifting sleeve to move to a position corresponding to the rubber tree. The lifting sleeve drives the lifting drilling rod to move vertically, and the lifting sleeve stops moving after being in contact with the ground. The rotating feed pipe drives the lifting drilling rod to rotate, and the rotating feed pipe drives the lifting drilling rod to vertically move downward out of the lifting sleeve. The lifting drilling rod drives the spiral blade to rotate to drill into the ground. The position of the lifting drilling rod of each drilling unit can move independently, and a spacing between the lifting drilling rods can be matched with a standard row spacing between the rubber 7 trees, thereby improving device applicability. After the lifting sleeve is in contact with the ground, the lifting drilling rod performs a drilling operation, so that depths of drilling holes can be the same when the lifting drilling rod faces different terrains, thereby preventing different depths of the drilling holes and improving the fertilizing accuracy.

[0023] 2. The lifting drilling rod stops rotating, and the extraction pump transports the fertilizer in the feed hopper to the rotating feed pipe through the feed communication pipe, the fertilizing pipe, and the fertilizing feed pipe. When the fertilizer in the rotating feed pipe enters the lifting drilling rod, the elastic baffle vertically moves upward to open the discharge port, and the fertilizer can be discharged from the discharge port. When the discharge port is opened for discharge, the lifting drilling rod vertically moves upward, and the fertilizer flows into the drilling hole, thereby completing fertilization. The lifting drilling rod is designed to be hollow and used for storing the fertilizer. After drilling is completed, the lifting drilling rod opens the discharge port for fertilizing, so that the fertilizer is discharged into the drilling hole when the lifting drilling rod moves out, without the need to import the fertilizer into the drilling hole subsequently, thereby improving the fertilizing operating efficiency.

[0024] 3. When the mobile mounting plate moves toward the adjusting cylinder, the horizontal connecting rod moves into the adjusting linkage groove, the adjusting linkage groove squeezes the horizontal connecting rod to enable the horizontal connecting rod to move, the horizontal connecting rod drives the depth limiting block to move out of the limiting groove, and the adjusting cylinder drives the depth adjusting plate to move vertically, thereby driving the depth limiting plate to move vertically. When the adjusting linkage groove no longer squeezes the horizontal connecting rod, the depth limiting block moves into the limiting groove, and a position of the depth limiting plate is fixed. A maximum drilling depth of the lifting drilling rod is fixed by adjusting the position of the depth limiting plate on the limiting connecting rod, thereby controlling a fixed depth during each drilling.

[0025] Certainly, any product implementing this disclosure does not necessarily need to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To describe the technical solutions in the embodiments of this disclosure more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following 8 description show merely some embodiments of this disclosure, and those of ordinary skill in the art may still derive other accompanying drawings from these accompanying drawings without creative efforts.

[0027] FIG. 1 is a schematic three-dimensional diagram 1 of an overall structure according to this disclosure;

[0028] FIG. 2 is a schematic three-dimensional diagram 2 of an overall structure according to this disclosure;

[0029] FIG. 3 is a schematic three-dimensional diagram 1 of a partial structure according to this disclosure;

[0030] FIG. 4 is a schematic structural diagram of a position A in FIG. 3 according to this disclosure;

[0031] FIG. 5 is a schematic three-dimensional diagram 2 of a partial structure according to this disclosure;

[0032] FIG. 6 is a schematic structural diagram of a position B in FIG. 5 according to this disclosure;

[0033] FIG. 7 is a schematic three-dimensional diagram 3 of a partial structure according to this disclosure;

[0034] FIG. 8 is a schematic structural diagram of a position C in FIG. 7 according to this disclosure;

[0035] FIG. 9 is a schematic three-dimensional diagram 4 of a partial structure according to this disclosure;

[0036] FIG. 10 is a schematic structural diagram of a position D in FIG. 9 according to this disclosure;

[0037] FIG. 11 is a schematic three-dimensional diagram 5 of a partial structure according to this disclosure; and

[0038] FIG. 12 is a schematic structural diagram of a position E in FIG. 11 according to this disclosure.

[0039] In the drawings, components represented by various reference numerals are listed as follows:

[0040] 1. fertilizer applicator; 101. feed hopper; 102. extraction pump; 103. storage tank; 2. drilling assembly; 201. mobile mounting plate; 202. fixed mounting plate; 203. mobile cylinder; 204. fixed rack; 21. drilling unit; 2101. lifting sleeve; 2102. lifting drilling rod; 2103. elastic baffle; 21031. discharge baffle; 21032. discharge spring; 2104. drilling rod assembling member; 2105. pressing block; 2106. adjusting mobile plate; 9 2107. adjusting gear; 2108. adjusting motor; 2109. adjusting sliding block; 2110. spiral blade; 2111. adjusting mobile block; 2112. lifting cylinder; 2113. drilling rod annular plate; 2114. lifting annular plate; 2115. rotating mounting plate; 2116. rotating ring gear; 2117. transmission gear; 2118. rotating motor; 2119. lifting connecting rod; 21a. connecting mechanism; 21a1. lifting connecting block; 21a2. limiting connecting rod; 21a3. mobile limiting block; 21a4. limiting spring; 21a5. horizontal connecting wedge block; 21a6. lifting wedge block; 21a7. lifting linkage rod; 21a8. depth limiting plate; 21a9. depth limiting block; 21a10. reset spring; 21a11. horizontal connecting rod; 21a12. depth adjusting plate; 21a13. adjusting cylinder; 3. fertilizing assembly; 301. fertilizing pipe; 302. feed communication pipe; 31. fertilizing unit; 3101. fertilizing feed pipe; 3102. rotating feed pipe; 3103. discharge mobile plate; 3104. discharge cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The following clearly and completely describes the technical solutions in the embodiments of this disclosure with reference to the accompanying drawings in the embodiments of this disclosure. Apparently, the described embodiments are merely some rather than all of the embodiments of this disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this disclosure without making creative efforts shall fall within the scope of protection of this disclosure.

[0042] In the description of this disclosure, it should be understood that the orientations or positional relationships indicated by the terms “hole”, “upper”, “lower”, “top”, “middle”, “inner”, and the like are intended only for the convenience of describing this disclosure and simplifying the description rather than for indicating or implying that the referred assemblies or elements must be provided with a particular orientation or constructed or operated in a particular orientation; and therefore, these terms should not be construed as limiting this disclosure.

[0043] Embodiments: referring to FIG. 1 to FIG. 12, this embodiment discloses a drilling and fertilizing device, including a fertilizer applicator 1, a drilling assembly 2, and a fertilizing assembly 3. The drilling assembly 2 includes a plurality of drilling units 21, and each drilling unit 21 includes a lifting sleeve 2101, a lifting drilling rod 2102, an elastic baffle 2103, a drilling rod assembling member 2104, and a pressing block 2105.

[0044] The lifting sleeve 2101 is disposed on the fertilizer applicator 1, the lifting drilling rod 2102 can extend into the lifting sleeve 2101 in a sliding matching manner, 10 and the lifting drilling rod 2102 is hollow internally. A side surface of the lifting drilling rod 2102 is provided with a discharge port, and the elastic baffle 2103 slides relative to the lifting drilling rod 2102 to open and close the discharge port.

[0045] The drilling rod assembling member 2104 is slidably matched with the lifting sleeve 2101, and the drilling rod assembling member 2104 is located above and rotatably matched with the lifting drilling rod 2102. The drilling rod assembling member 2104 is provided with a bonding notch with a downward opening, and the pressing block 2105 is slidably mounted in the bonding notch.

[0046] During drilling, the lifting sleeve 2101 can drive the lifting drilling rod 2102 to be in contact with the ground to drive the lifting drilling rod 2102 to rotate. The pressing block 2105 is pressed against the top of the elastic baffle 2103 and ensures that the discharge port is in a closed state. The elastic baffle 2103 has accumulated energy for upward movement.

[0047] After drilling, the pressing block 2105 moves upward, the elastic baffle 2103 releases the accumulated energy and resets upward to be bonded with the notch to limit rotation of the lifting drilling rod 2102 while opening the discharge port, and fertilizer in the lifting drilling rod 2102 can flow out of the discharge port in an open state.

[0048] The fertilizing assembly 3 includes a plurality of fertilizing units 31, each fertilizing unit 31 includes a fertilizing feed pipe 3101 and a rotating feed pipe 3102, and the fertilizing feed pipe 3101 is disposed on the fertilizer applicator 1. A fixed end of the rotating feed pipe 3102 is communicated with the lifting drilling rod 2102, and a rotating end of the rotating feed pipe 3102 is rotatably communicated with the fertilizing feed pipe 3101.

[0049] When in use, before drilling, the lifting sleeve 2101 moves close to a rubber tree, and the lifting sleeve 2101 of each drilling unit moves to a position corresponding to the rubber tree. The lifting sleeve 2101 drives the lifting drilling rod 2102 to move vertically, and the lifting sleeve 2101 stops moving after being in contact with the ground. The rotating feed pipe 3102 drives the lifting drilling rod 2102 to rotate, and the rotating feed pipe 3102 drives the lifting drilling rod 2102 to vertically move downward out of the lifting sleeve 2101. The lifting drilling rod 2102 drives a spiral blade 2110 to rotate to drill into the ground. The position of the lifting drilling rod 2102 of each drilling unit 21 can move independently, and a spacing between the lifting drilling rods 2102 can be matched with a standard row spacing between the rubber trees, thereby improving device applicability. After the lifting sleeve 2101 is in contact with the ground, the lifting 11 drilling rod 2102 performs a drilling operation, so that the depths of drilling holes can be the same when the lifting drilling rod 2102 faces different terrains, thereby preventing different depths of the drilling holes and improving the fertilizing accuracy.

[0050] After drilling to a certain depth, the fertilizer sequentially passes through the fertilizing feed pipe 3101 and the rotating feed pipe 3102 to enter the lifting drilling rod 2102, the pressing block 2105 moves upward, and the elastic baffle 2103 releases the accumulated energy and resets upward to be bonded with the bonding notch to limit the rotation of the lifting drilling rod 2102 while opening the discharge port. After the elastic baffle 2103 vertically moves upward to open the discharge port, the fertilizer can be discharged from the discharge port. When the discharge port is opened for discharge, the lifting drilling rod 2102 vertically moves upward, and the fertilizer flows into the drilling hole, thereby completing fertilization. The lifting drilling rod 2102 is designed to be hollow and used for storing the fertilizer. After drilling is completed, the lifting drilling rod 2102 opens the discharge port for fertilizing, so that the fertilizer is discharged into the drilling hole when the lifting drilling rod 2102 moves out, without the need to import the fertilizer into the drilling hole subsequently, thereby improving the fertilizing operating efficiency.

[0051] Referring to FIG. 1 to FIG. 12, the fertilizer applicator 1 is fixedly provided with a storage tank 103. A top surface of the storage tank 103 is fixedly provided with a feed hopper 101, and a side surface of the storage tank 103 is fixedly provided with an extraction pump 102. The drilling assembly 2 further includes a mobile mounting plate 201, a fixed mounting plate 202, a mobile cylinder 203, and a fixed rack 204. The fixed mounting plate 202 is fixedly mounted at one end of the storage tank 103, and the mobile cylinder 203 is fixedly mounted on a side surface of the fixed mounting plate 202. An output end of the mobile cylinder 203 passes through the fixed mounting plate 202 to be fixedly connected to the mobile mounting plate 201, and the fixed rack 204 is fixedly mounted on a side surface of the mobile mounting plate 201.

[0052] When in use, the fertilizer enters the storage tank 103 through the feed hopper 101, and the extraction pump 102 extracts the fertilizer from the storage tank 103. The mobile cylinder 203 drives the mobile mounting plate 201 to move.

[0053] Referring to FIG. 1 to FIG. 12, the drilling unit further includes an adjusting mobile plate 2106, an adjusting gear 2107, an adjusting motor 2108, an adjusting sliding block 2109, the spiral blade 2110, an adjusting mobile block 2111, and a lifting cylinder 2112. The spiral blade 2110 is fixedly mounted around the lifting drilling rod 2102. The 12 side surface of the mobile mounting plate 201 is provided with an irregular sliding groove, and the adjusting sliding block 2109 is slidably mounted in the irregular sliding groove. The adjusting mobile plate 2106 is fixedly connected to the adjusting sliding block 2109. An end surface of the adjusting mobile plate 2106 is provided with a gear mounting groove, and the adjusting gear 2107 is rotatably mounted in the gear mounting groove. The adjusting motor 2108 is fixedly mounted on one side of the adjusting mobile plate 2106, a driving shaft of the adjusting motor 2108 passes through the adjusting mobile plate 2106 to be fixedly connected to the adjusting gear 2107, and the adjusting gear 2107 is engaged with the fixed rack 204. The adjusting mobile block 2111 is fixedly mounted on a side surface of the adjusting mobile plate 2106, a top surface of the adjusting mobile block 2111 is provided with a lifting notch, and the lifting sleeve 2101 is slidably matched with the lifting notch. The lifting cylinder 2112 is fixedly mounted on a side surface of the adjusting mobile block 2111, and a horizontal spacing between adjacent lifting sleeves 2101 can be adjusted.

[0054] When in use, the mobile mounting plate 201 movably drives the adjusting sliding block 2109 to move, the adjusting motor 2108 drives the adjusting gear 2107 to rotate, and the adjusting gear 2107 is engaged with the fixed rack 204, thereby driving the adjusting mobile plate 2106 to move. The lifting cylinder 2112 can drive the lifting drilling rod 2102 to move vertically.

[0055] Referring to FIG. 1 to FIG. 12, the drilling unit 21 further includes a drilling rod annular plate 2113, a lifting annular plate 2114, a rotating mounting plate 2115, a rotating ring gear 2116, a transmission gear 2117, a rotating motor 2118, and a lifting connecting rod 2119. The drilling rod annular plate 2113 is slidably matched with the lifting sleeve 2101, and the drilling rod annular plate 2113 is fixedly mounted on a top surface of the lifting drilling rod 2102. A top surface of the drilling rod annular plate 2113 is rotatably connected to a bottom surface of the lifting annular plate 2114, and the lifting annular plate 2114 is slidably mounted in the lifting sleeve 2101. A top surface of the lifting sleeve 2101 is fixedly provided with the rotating mounting plate 2115, and the rotating feed pipe 3102 slidably passes through the rotating mounting plate 2115 to be fixedly connected to the drilling rod annular plate 2113. The lifting annular plate 2114 is slidably sleeved on the rotating feed pipe 3102. A lifting connecting groove is formed around the lifting sleeve 2101, and the drilling rod assembling member 2104 is slidably mounted in the lifting connecting groove. The drilling rod assembling member 2104 is fixedly connected to the lifting annular plate 2114, a top surface of the drilling rod 13 assembling member 2104 is fixedly provided with the lifting connecting rod 2119, and the lifting connecting rod 2119 is fixedly connected to an output end of the lifting cylinder 2112. The rotating ring gear 2116 is slidably sleeved on the rotating feed pipe 3102, and the rotating ring gear is rotatably mounted on a top surface of the rotating mounting plate 2115. A plurality of lifting sliding grooves are formed around the rotating feed pipe 3102, a lifting sliding block is slidably mounted in each lifting sliding groove, and the lifting sliding block is fixedly connected to the rotating ring gear 2116. The transmission gear 2117 is rotatably mounted on the top surface of the rotating mounting plate 2115, and the transmission gear 2117 is engaged with the rotating ring gear 2116. The rotating motor 2118 is fixedly mounted on a bottom surface of the rotating mounting plate 2115, and a driving shaft of the rotating motor 2118 passes through the rotating mounting plate 2115 to be fixedly connected to the transmission gear 2117.

[0056] When in use, the lifting cylinder 2112 drives the drilling rod assembling member 2104 to move vertically through the lifting connecting rod 2119, the drilling rod assembling member 2104 drives the lifting annular plate 2114 to move vertically, the lifting annular plate 2114 drives the drilling rod annular plate 2113 to move vertically, and the drilling rod annular plate 2113 drives the lifting drilling rod 2102 to move vertically. The rotating motor 2118 drives the transmission gear 2117 to rotate, the transmission gear 2117 rotates to drive the rotating ring gear 2116 to rotate, the rotating ring gear 2116 rotates to drive the rotating feed pipe 3102 to rotate, and the rotating feed pipe 3102 rotates to drive the lifting drilling rod 2102 to rotate.

[0057] Referring to FIG. 1 to FIG. 12, the drilling unit 21 further includes a connecting mechanism 21a. The connecting mechanism 21a includes a lifting connecting block 21a1, a limiting connecting rod 21a2, a mobile limiting block 21a3, a limiting spring 21a4, a horizontal connecting wedge block 21a5, a lifting wedge block 21a6, and a lifting linkage rod 21a7. The lifting connecting block 21a1 is fixedly mounted on a side surface of the rotating mounting plate 2115, the limiting connecting rod 21a2 slidably passes through the lifting connecting block 21a1 to be fixedly connected to the drilling rod assembling member 2104, and a side surface of the limiting connecting rod 21a2 is provided with a plurality of limiting grooves. The mobile limiting block 21a3 is slidably mounted on a top surface of the lifting connecting block 21a1, and the top surface of the lifting connecting block 21a1 is fixedly provided with a spring mounting plate. One end of the limiting spring 21a4 is fixedly connected to the mobile limiting block 21a3, and the other end thereof is fixedly connected to the spring mounting plate. The horizontal 14 connecting wedge block 21a5 is horizontally and slidably mounted on a side surface of the lifting connecting block 21a1, and the horizontal connecting wedge block is fixedly connected to the mobile limiting block 21a3. The lifting wedge block 21a6 is vertically and slidably mounted on the side surface of the lifting connecting block 21a1, the lifting linkage rod 21a7 is fixedly mounted on a bottom surface of the lifting wedge block 21a6, and a bottom surface of the lifting linkage rod 21a7 slidably passes through the adjusting mobile block 2111.

[0058] When in use, when the mobile limiting block 21a3 is partially located in the limiting groove, the lifting wedge block 21a6 is not in contact with the horizontal connecting wedge block 21a5, and the drilling rod assembling member 2104 vertically moves to drive the lifting connecting block 21a1 to move through the limiting connecting rod 21a2, thereby driving the lifting sleeve 2101 to move vertically. When the drilling rod assembling member 2104 moves downward to enable the lifting linkage rod 21a7 to be in squeezing contact with the ground, the lifting linkage rod 21a7 is in squeezing contact with the horizontal connecting wedge block 21a5, so that the horizontal connecting wedge block 21a5 moves horizontally and drives the mobile limiting block 21a3 to move out of the limiting groove. The limiting connecting rod 21a2 releases a limitation with the lifting connecting block 21a1, and the lifting connecting block 21a1 moves downward and no longer drives the lifting connecting block 21a1 to move.

[0059] Referring to FIG. 1 to FIG. 12, the connecting mechanism 21a further includes a depth limiting plate 21a8, a depth limiting block 21a9, a reset spring 21a10, a horizontal connecting rod 21a11, a depth adjusting plate 21a12, and an adjusting cylinder 21a13. The adjusting cylinder 21a13 is fixedly mounted on the side surface of the fixed mounting plate 202, and an output end of the adjusting cylinder 21a13 is fixedly connected to the depth adjusting plate 21a12. An end surface of the depth adjusting plate 21a12 is provided with an adjusting linkage groove, and the depth limiting plate 21a8 is slidably sleeved on the limiting connecting rod 21a2. The depth limiting block 21a9 is slidably mounted on a top surface of the depth limiting plate 21a8, and the top surface of the depth limiting plate 21a8 is fixedly provided with a spring fixed plate. One end of the reset spring 21a10 is fixedly connected to the depth limiting block 21a9, and the other end thereof is fixedly connected to the spring fixed plate. The horizontal connecting rod 21a11 is fixedly connected to the depth limiting block 21a9. 15

[0060] When in use, when the mobile mounting plate 201 moves toward the adjusting cylinder 21a13, the horizontal connecting rod 21a11 moves into the adjusting linkage groove, the adjusting linkage groove squeezes the horizontal connecting rod 21a11 to enable the horizontal connecting rod 21a11 to move, the horizontal connecting rod 21a11 drives the depth limiting block 21a9 to move out of the limiting groove, and the adjusting cylinder 21a13 drives the depth adjusting plate 21a12 to move vertically, thereby driving the depth limiting plate 21a8 to move vertically. When the adjusting linkage groove no longer squeezes the horizontal connecting rod 21a11, the depth limiting block 21a9 moves into the limiting groove, and a position of the depth limiting plate 21a8 is fixed.

[0061] Referring to FIG. 1 to FIG. 12, the fertilizing assembly 3 further includes a fertilizing pipe 301 and a feed communication pipe 302. The elastic baffle 2103 includes a discharge baffle 21031 and a discharge spring 21032. The discharge baffle 21031 is slidably mounted on the side surface of the lifting drilling rod 2102. One end of the feed communication pipe 302 is fixedly connected to the extraction pump 102, and the other end thereof is fixedly connected to the fertilizing pipe 301. One end of the fertilizing feed pipe 3101 is fixedly connected to the fertilizing pipe 301, and the other end thereof is rotatably connected to the rotating feed pipe 3102. The fertilizing unit 31 further includes a discharge mobile plate 3103 and a discharge cylinder 3104. The discharge mobile plate 3103 is fixedly mounted on the discharge baffle 21031. One end of the discharge spring 21032 is fixedly connected to the discharge mobile plate 3103, and the other end thereof is fixedly connected to the drilling rod annular plate 2113. The discharge cylinder 3104 is fixedly mounted on the top surface of the drilling rod assembling member 2104, and an output end of the discharge cylinder 3104 is fixedly connected to the pressing block 2105. When the discharge baffle 21031 moves into the bonding notch and is bonded with the bonding notch, the elastic baffle 2103 cannot rotate around a central axis of the lifting drilling rod 2102.

[0062] When in use, the extraction pump 102 transports the fertilizer in the feed hopper 101 to the rotating feed pipe 3102 through the feed communication pipe 302, the fertilizing pipe 301, and the fertilizing feed pipe 3101, and the fertilizer in the rotating feed pipe 3102 enters the lifting drilling rod 2102. During discharge, the discharge cylinder 3104 drives the pressing block 2105 to move upward, the discharge spring 21032 resets to enable the elastic baffle 2103 to move upward to enter the bonding notch, and the discharge port is opened. 16

[0063] Referring to FIG. 1 to FIG. 12, a bottom surface of the lifting sleeve 2101 is fixedly provided with a plurality of fixed support rods, and the bottom surface of the lifting linkage rod 21a7 is lower than a bottom surface of each fixed support rod.

[0064] Referring to FIG. 1 to FIG. 12, a height of the adjusting linkage groove is the same as a height of the horizontal connecting rod 21a11.

[0065] A fertilizing method for rubber tree planting is provided, using the above drilling and fertilizing device, and including the following steps:

[0066] Before drilling, the lifting sleeve 2101 moves close to the rubber tree, and the lifting sleeve 2101 of each drilling unit moves to a position corresponding to the rubber tree. The lifting sleeve 2101 drives the lifting drilling rod 2102 to move vertically, and the lifting sleeve 2101 stops moving after being in contact with the ground. The rotating feed pipe 3102 drives the lifting drilling rod 2102 to rotate, and the rotating feed pipe 3102 drives the lifting drilling rod 2102 to vertically move downward out of the lifting sleeve 2101. The lifting drilling rod 2102 drives the spiral blade 2110 to rotate to drill into the ground.

[0067] After drilling to a certain depth, the fertilizer sequentially passes through the fertilizing feed pipe 3101 and the rotating feed pipe 3102 to enter the lifting drilling rod 2102, the pressing block 2105 moves upward, and the elastic baffle 2103 releases the accumulated energy and resets upward to be bonded with the bonding notch to limit the rotation of the lifting drilling rod 2102 while opening the discharge port. After the elastic baffle 2103 vertically moves upward to open the discharge port, the fertilizer can be discharged from the discharge port. When the discharge port is opened for discharge, the lifting drilling rod 2102 vertically moves upward, and the fertilizer flows into the drilling hole, thereby completing fertilization.

[0068] In the description of the specification, descriptions of reference terms such as “an embodiment”, “example”, and “specific example” mean that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of this disclosure. In the specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific feature, structure, material, or characteristic may be combined in any suitable manner in any one or more embodiments or examples.

[0069] The above disclosed preferred embodiments of this disclosure are only used to help illustrate this disclosure. All the details are not described in detail in the preferred 17 embodiments, and this disclosure is not limited to the specific embodiments. Obviously, according to the content of the specification, a plurality of modifications and changes can be made. In the specification, these embodiments are selected and specifically described for the purpose of better explaining the principle and actual application of this 5 disclosure, to enable a person skilled in the art to better understand and use this disclosure. This disclosure is merely limited by the claims and all scope and equivalents thereof.

Claims

1. Drilling and fertilization device consisting of a fertilization machine, a drilling component and comprises a fertilization component, characterized in that the boron component has multiple comprises drilling units, where the drilling unit includes a lifting sleeve, a drilling rod, a elastic bulkhead, a drill rod mounting piece and a pressure block includes; the lift cover is mounted on the fertilizer spreader and the lift drill rod on a can be inserted into the lifting cover in a sliding manner, whereby the interior of the the lever drill rod is hollow; there is an outflow opening on the side of the lever drill rod is located, and the elastic bulkhead can slide relative to the drill rod to the to open or close the outflow opening; the drill rod mounting piece fits into the lifting cover in a sliding manner, and the drill rod assembly positions itself above the lifting drill rod and forms a rotating connection is located; the drill rod assembly piece has a downward-facing keyway, and the thrust block is mounted in this keyway in a sliding manner; during drilling the lifting sleeve can bring the drill rod to the ground and the can rotate the drilling rod; the pressure block then presses against the elastic bulkhead, so that the outflow opening remains closed, causing the elastic baffle tension builds up to be able to move upwards; after drilling the pressure block is slid upwards, and the elastic bulkhead then relaxes and moves back upwards until it engages in the keyway to prevent that the drilling rod rotates further, while the outflow opening opens; fertilizer in the the drilling rod can then flow away through the opened outflow opening; the fertilization component comprises multiple fertilization units, and each fertilization unit comprises a fertilization inlet pipe and a rotating inlet pipe, where the fertilization inlet pipe is mounted on the fertilization machine; the fixed connects the end of the rotating feed pipe to the drilling rod, and the rotating end of the rotating inlet pipe is connected to the in a rotating manner fertilizer inlet pipe; the fertilization machine is permanently mounted with a storage tank, whereby on top the storage tank has a permanently mounted inlet funnel, and on the side of the storage tank a suction pump is permanently mounted; the drilling component further a motion mounting plate, a fixed mounting plate, a motion cylinder and a fixed comprises a rack, where the fixed mounting plate is securely mounted to one end of the storage tank, the motion cylinder is fixedly mounted to the side of the fixed mounting plate, the outgoing side of the motion cylinder through the fixed mounting plate is inserted and firmly connected to the movement mounting plate, and the fixed rack is fixed mounted on the side of the movement mounting plate; the drilling unit furthermore an adjustment slide block, a spiral blade, a adjustment slide plate, an adjustment gear, an adjustment motor, an adjustment slider and a comprises a lifting cylinder, in which the spiral blade is fixedly mounted around the lifting drill rod, a profile guide groove is provided on the side of the movement mounting plate, the the sliding adjustment slide is mounted in this profile guide groove, the adjustment slide plate is firmly connected to the adjustment guide, in the end face of the adjustment slide plate a gear mounting slot is provided, the adjustment gear is mounted rotating in the gear mounting slot, the adjustment motor is fixed mounted on one side of the adjustment slide plate, the drive shaft of the adjustment motor through the adjustment slide plate protrudes and is firmly connected to the adjustment gear, the the adjustment gear is in engagement with the fixed rack, the adjustment slide block is fixed mounted on the side of the adjustment slide plate, on the top surface of the a lifting groove is provided on the adjustment slide block, and the lifting boot on a sliding manner fits into this lifting groove, the lifting cylinder is fixedly mounted to the side of the adjustment slide block and the horizontal distance between adjacent lifting sleeves can be adjusted; the drilling unit furthermore a drill rod ring plate, a lifting ring plate, a rotary mounting plate, a rotary toothed ring, a transmission gear, a rotary motor and comprises a lifting connecting rod, where the drilling rod ring plate on a sliding fits in the lifting boot and is securely mounted on the top surface of the drilling rod, the upper surface of the drill rod ring plate is rotatably connected to the lower surface of the lifting ring plate, the sliding lifting ring plate is mounted in the lifting boot, on the top surface of the lifting cover the swivel mounting plate is fixedly mounted, the rotating inlet pipe slides through the swivel mounting plate and is securely connected to the drill rod ring plate, the lifting ring plate is slidable around the rotating feed pipe mounted, a lifting connection groove has been provided around the lifting cover, the The sliding drill rod mounting piece is mounted in this lifting connection groove and fixed. is connected to the lifting ring plate, on the top surface of the drill rod mounting piece the lifting link rod is permanently mounted, the lifting link rod is permanently connected to the outlet of the lifting cylinder, the rotary gear ring sliding around the rotating inlet pipe is mounted, the rotating gear is mounted on the top surface of the swivel mounting plate, around the rotating feed pipe there are several lift-slide grooves installed, a sliding lifting guide is mounted in each lift-slide groove, the lifting guide is fixedly connected to the rotary gear ring, the transmission gear rotating the transmission gear is mounted on the top surface of the rotary mounting plate is in engagement with the rotary gear ring, the rotary motor is fixedly mounted to the bottom surface of the rotary mounting plate, and the drive shaft of the rotary motor protrudes through the rotary mounting plate and is fixedly connected to the transmission gear.

2. Drilling and fertilization device within the meaning of claim 1, characterized in that the drilling unit further comprises a connection mechanism, and the connection mechanism a lifting connection block, a limiting connection rod, a movable limiting block, a limiting spring, a horizontal connecting wedge, a lifting wedge and comprises a lifting drive rod, where the lifting linkage block is fixedly mounted to the side of the swivel mounting plate, the limiting connecting rod slides through the lifting connection block and is firmly connected to the drill rod mounting piece, in the side of the limiting connecting rod there are several limiting grooves installed, the movable boundary block is mounted slidingly on the top surface of the lifting connection block, on the top surface of the lifting connection block a spring mounting plate is securely mounted, one end of the limiting spring is fixed connected to the movable boundary block, and the other end is fixed connected to the spring mounting plate, the horizontal connecting wedge horizontal sliding is mounted on the side of the lifting connection block, the horizontal the connecting wedge is fixedly connected to the movable limiting block, the lifting wedge vertically sliding is mounted on the side of the lifting connection block, the lifting drive rod is fixedly mounted to the underside of the lifting wedge, and the The lower end of the lift drive rod slides through the adjustment slide block.

3. Drilling and fertilization device within the meaning of claim 2, characterized in that it connection mechanism furthermore a depth limiting plate, a depth limiting block, a return spring, a horizontal connecting rod, a depth adjustment plate and a includes adjustment cylinder, where the adjustment cylinder is fixedly mounted to the side of the fixed mounting plate, the outlet of the adjustment cylinder is permanently connected to the depth adjustment plate, in the end face of the depth adjustment plate there is an adjustment drive groove installed, the depth limiting plate sliding to the limiting connecting rod is mounted, the depth limiting block is sliding mounted on the top surface of the depth limiting plate, on the top surface of the depth limiting plate a spring fixing plate is securely mounted, one end of the return spring is firmly connected to the depth limiting block, and the other end is firmly connected to the spring mounting plate, the horizontal connecting rod is fixed connected to the depth limiting block.

4. Drilling and fertilization device within the meaning of claim 3, characterized in that the The fertilization component further comprises a fertilization pipe and an inlet connection pipe. and the elastic baffle comprises an outflow baffle and an outflow spring, whereby the outflow baffle is mounted on the side of the drilling rod, one the end of the inlet connection pipe is firmly connected to the suction pump, and the the other end is firmly connected to the fertilization pipe, the fertilization inlet pipe to one end is permanently connected to the fertilization pipe, and at the other end rotating is connected to the rotating inlet pipe; the fertilization unit further a comprises an outflow slide plate and an outflow cylinder, where the outflow slide plate is fixedly mounted to the outlet baffle, one end of the outlet spring is fixed connected to the outflow slide plate, and the other end is firmly connected to the drill rod ring plate, the outflow cylinder is fixedly mounted on the top surface of the drill rod mounting piece, the outlet of the outflow cylinder is firmly connected to the pressure block; when the outlet bulkhead moves in the keyway and with the keyway in if the keyway connection occurs, the elastic bulkhead cannot rotate around the central axis of the lifting rod turn.

5. Drilling and fertilization device within the meaning of claim 4, characterized by the underside of the lifting boot several fixed support rods are firmly mounted, and the the bottom of the lift drive rod is lower than the bottom of the fixed support rod is located.

6. Drilling and fertilization device within the meaning of claim 5, characterized in that the height of the adjustment drive groove is equal to the height of the horizontal connecting rod 7. Method for fertilizing when planting rubber trees, with the characteristic that this drilling and fertilization device according to one of claims 1 - 9 uses and includes the following steps: before drilling, the movement of the lifting boot towards the rubber boom, whereby positions each set of drilling units' lifting cover in the corresponding position relative to the rubber boom, bringing into a vertical movement by the lifting boot of the drilling rod until the lifting boot makes contact with the ground and stops moving; setting the drilling rod into rotation by the rotating feed pipe, the vertical move the lever drill rod downwards through the rotating feed pipe until it comes out the lifting boot protrudes; setting the spiral blade into rotation by the lifting drill rod, through which a hole is drilled in the ground; when the borehole has reached a certain depth, the flow of the fertilizer successively through the fertilization inlet pipe and the rotating inlet pipe to into the to come to the jacking rod; moving the pressure block upwards, restoring the elastic shot by releasing stored force and moving it upwards until it enters a keyway connection with the keyway, causing the rotation of the lever drill rod is blocked and at the same time the outflow opening opens; after the elastic the baffle has moved vertically upwards and opened the outflow opening, the fertilizer is discharged from the outlet opening; while the outlet opening is open is for drainage, the vertical upward movement of the drill rod and the flow of the fertilizer in the borehole, with which fertilization is completed. 1 / 12 FIG.1