CN109122006A - A kind of drawing branch device for capableing of bird repellent for pear tree plantation - Google Patents
A kind of drawing branch device for capableing of bird repellent for pear tree plantation Download PDFInfo
- Publication number
- CN109122006A CN109122006A CN201811033358.9A CN201811033358A CN109122006A CN 109122006 A CN109122006 A CN 109122006A CN 201811033358 A CN201811033358 A CN 201811033358A CN 109122006 A CN109122006 A CN 109122006A
- Authority
- CN
- China
- Prior art keywords
- bird repellent
- pear tree
- support
- capableing
- drawing branch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/04—Supports for hops, vines, or trees
- A01G17/10—Holders for boughs or branches
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/06—Scaring or repelling devices, e.g. bird-scaring apparatus using visual means, e.g. scarecrows, moving elements, specific shapes, patterns or the like
- A01M29/08—Scaring or repelling devices, e.g. bird-scaring apparatus using visual means, e.g. scarecrows, moving elements, specific shapes, patterns or the like using reflection, colours or films with specific transparency or reflectivity
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/16—Scaring or repelling devices, e.g. bird-scaring apparatus using sound waves
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/30—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water
- A01M29/32—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water specially adapted for birds, e.g. spikes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Wood Science & Technology (AREA)
- Birds (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Pest Control & Pesticides (AREA)
- Insects & Arthropods (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Botany (AREA)
- Catching Or Destruction (AREA)
Abstract
A kind of drawing branch device for capableing of bird repellent for pear tree plantation, including appliance stand, described device bracket is divided into two groups of equal left supports and right support, described device bracket is the cylindrical structure that composition is bolted in left support and the hinged other side in right support side, the left support and right support two sides level are angularly provided with several side levers, if being equipped with dry rubber substance bracing wire on the side lever, mutual corresponding half clamp ring is respectively equipped in the middle part of the left support and right support upper and lower ends, two and half clamp ring top is equipped with the support rod perpendicular to ground, a wherein post upper has been bolted sound box, another support rod top is equipped with bird repellent thorn, the present invention can either correct the mobile jib of pear tree by support rod, avoid mobile jib run-off the straight, it is capable of fixing side shoot again, bracing wire is to limb during avoiding drawing branch It causes to damage, can be realized the effect of bird repellent, save space, functional diversity.
Description
Technical field
The present invention relates to pear tree planting equipment facility fields, and in particular to a kind of drawing branch for capableing of bird repellent for pear tree plantation
Device.
Background technique
In pear tree planting process for convenient for preferably utilize limb between spatial joint clearance, guarantee limb between air circulation and
The utilization rate to sunlight is improved, pear tree can generally be carried out in eight Septembers drawing branch processing, stretch limb, limb is determined
Shape.
When tradition draws branch, the upper other end of limb directly is tied up to using a rope one end and is tied up on the mobile jib of pear tree, rope item ties up to
On pear tree mobile jib, when encountering weather of blowing, limb, which is waved, to be pulled rope item and is easy to cause rope item abrasion pear tree mobile jib, and tradition draws branch
Apparatus function is single, only can be realized the effect for drawing branch, and pear tree is to prevent from bird to hurt fruit also to need to install scarer, cause sky
Between waste.
Summary of the invention
What the present invention to be overcome is that traditional pear tree draws branch device to be easy to damage trunk, has a single function, can not achieve bird repellent
Purpose the problem of, it is therefore an objective to provide and a kind of be capable of the drawing branch device of bird repellent for pear tree plantation.
A kind of drawing branch device for capableing of bird repellent for pear tree plantation, including appliance stand, described device bracket are divided into two groups
Equal left support and right support, described device bracket are that structure is bolted in left support and the hinged other side in right support side
At cylindrical structure, the left support and right support two sides level are angularly provided with several side levers, install on the side lever
If there is dry rubber substance bracing wire, it is respectively equipped with mutual corresponding half clamp ring in the middle part of the left support and right support upper and lower ends, described two
Half clamp ring top of group is equipped with the support rod perpendicular to ground, and a wherein post upper has been bolted sound box,
Another support rod top is equipped with bird repellent thorn, and the sound box inside is fixed with roller bearing by bearing, flat with the roller bearing
Stainless steel elastic slice is fixed with inside the sound box of row side, the same diametral plane of roller surface is equipped with several evagination acnes, described
Stainless steel elastic slice, which corresponds to be equipped between the evagination acne on roller surface different-diameter face, stays side slot, and central spindle one end of the roller bearing is stretched out
Sound box is externally connected to Vane wheel, and the flabellum wheel surface is equipped with reflective mirror.
Further, the stainless steel elastic slice correspond to be arranged between evagination acne on roller surface different-diameter face stay side slot
Length is unequal.
Further, the support rod is divided into interior bar, outer bar, positioning pin, and the outer bar lower end is by being welded on half clamp ring
Upper surface, the outer bar inner hollow, described interior bar one end are located inside the hollow structure of outer bar, and the interior bar other end is located at
Outside outer bar, equidistant in the interior bar and outer bar to be provided with perforation, the positioning pin passes through perforate fixed interior bar and outer bar, institute
Stating outside two groups of support rods ring set respectively has fixing sleeve, and the fixing sleeve is equipped with positioning corresponding with the perforation of support rod surface
Hole, the positioning pin pass through location hole, are equipped with correction half-turn on the fixing sleeve.
Further, rubber bracing wire one end is fixed on side lever, and the other end, which is connected with, draws branch folder, described that branch is drawn to press from both sides
It is respectively fixed with semi-circular gasket on the inside of clamping opening, is fixed with extruding spring between the clamping opening and semi-circular gasket for drawing branch folder.
Further, the semi-circular gasket inner surface is embedded with foamed gaskets.
Further, described device bracket bottom end is angularly welded with four groups of level boards, and four groups of level boards are located at same
One horizontal plane.
The beneficial effects of the present invention are:
The present invention fixes pear tree using half clamp ring on appliance stand, both by the appliance stand of setting cylindrical structure
The mobile jib that pear tree can be corrected by support rod, avoids mobile jib run-off the straight, and be capable of fixing side shoot, between improving between limb
Gap draws branch effect good, avoids that bracing wire during branch is drawn to cause to damage to limb, and be equipped with bird repellent thorn and sound in post upper
Box blows Vane wheel using wind and roller bearing is driven to rotate, and the evagination acne that stainless steel elastic slice scratches roller surface generates vibration, issues
Sound realizes effect on driving birds, wind energy is utilized to generate sound in whole process, and energy conservation and environmental protection increases and draws the vdiverse in function of branch device
Property.
By stainless steel elastic slice correspond to be arranged between evagination acne on roller surface different-diameter face stay side slot length not
Equal, when the evagination acne of stainless steel elastic slice scratch to roller surface, difference stays the elastic slice between the slot of side by length difference institute
What is generated has different timbres, and can spread out of different tones.
By the way that ring set has fixing sleeve respectively outside two groups of support rods, correction half-turn is installed on fixing sleeve, utilizes correction
Half-turn fixes pear tree trunk, and pear tree trunk can be made vertically to grow, avoid run-off the straight, and fixing sleeve can be above and below support rod
It is adjusted, convenient for adjusting the position of correction half-turn.
By being respectively fixed with semi-circular gasket on the inside of the clamping opening for drawing branch folder, between the clamping opening and semi-circular gasket of drawing branch folder
It is fixed with extruding spring, using spring is squeezed, forms buffering, avoids that branch is drawn to cause when being clipped in clamping limb since extruding force is excessive
Limb damage.
By being embedded with foamed gaskets in semi-circular gasket inner surface, pear tree limb is protected using foamed gaskets, avoids wearing.
By being angularly welded with four groups of level boards in appliance stand bottom end, increase the contact surface of appliance stand and ground
Product, prevents appliance stand run-off the straight, influences to draw branch effect.
Detailed description of the invention
Fig. 1 is structure chart of the invention；
Fig. 2 is sound box structure figure of the invention；
Fig. 3 is drawing branch clamping structure figure of the invention；
Fig. 4 is supporting bar structure figure of the invention；
In figure: 1. appliance stands；12. left support；13. right support；14. side lever；15. rubber bracing wire；16. half clamp ring；17.
Support rod；18. sound box；19. bird repellent is pierced；21. roller bearing；22. stainless steel elastic slice；23. evagination acne；24. staying side slot；25. Vane wheel；
26. reflective mirror；31. interior bar；32. outer bar；33. positioning pin；34. perforation；35. fixing sleeve；36. location hole；37. correcting half-turn；
41. drawing branch folder；42. semi-circular gasket；43. squeezing spring；44. foamed gaskets；51. level board.
Specific embodiment
It is easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
It is specifically illustrating, the present invention is further explained.
Embodiment 1
As shown in Figure 1, Figure 2；A kind of drawing branch device for capableing of bird repellent for pear tree plantation, including appliance stand 1, device
Bracket 1 is divided to for two groups of equal left supports 12 and right support 13, and appliance stand 1 is that left support 12 and 13 side of right support are hingedly another
The cylindrical structure of composition is bolted in side, if left support 12 and 13 two sides level of right support are angularly provided with dry side
Bar 14 is respectively equipped with mutually if being equipped with dry rubber substance bracing wire 15 on side lever 14 in the middle part of left support 12 and 13 upper and lower ends of right support
Corresponding half clamp ring 16, two and half clamp rings, 16 top is equipped with the support rod 17 perpendicular to ground, wherein 17 upper end of support rod
It is bolted sound box 18, another 17 top of support rod is equipped with bird repellent thorn 19, and 18 inside of sound box is fixed by bearing
There is roller bearing 21, stainless steel elastic slice 22, the same diametral plane in 21 surface of roller bearing are fixed with inside the sound box 18 of side parallel with roller bearing 21
Several evagination acnes 23 are equipped with, is equipped between the evagination acne 23 on the corresponding 21 surface different-diameter face of roller bearing of stainless steel elastic slice 22 and stays side
Slot 24, central spindle one end of roller bearing 21 stretch out sound box 18 and are externally connected to Vane wheel 25, and 25 surface of Vane wheel is equipped with reflective mirror 26.
What is be arranged between evagination acne 23 on the corresponding 21 surface different-diameter face of roller bearing of stainless steel elastic slice 22 stays 24 length of side slot
It is unequal.
As shown in Figure 3；15 one end of rubber bracing wire is fixed on side lever 14, and the other end, which is connected with, draws branch folder 41, draws branch folder 41
Clamping opening on the inside of be respectively fixed with semi-circular gasket 42, draw and be fixed with extruding spring between the clamping opening and semi-circular gasket 42 of branch folder 41
43。
42 inner surface of semi-circular gasket is embedded with foamed gaskets 44.
As shown in Figure 4；Support rod 17 divides for interior bar 31, outer bar 32, positioning pin 33, and 32 lower end of outer bar is by being welded on half folder
16 upper surface of ring, 32 inner hollow of outer bar, 31 one end of interior bar are located inside the hollow structure of outer bar 32, and 31 other end of interior bar is located at
It is equidistant in interior bar 31 and outer bar 32 to be provided with perforation 34 outside outer bar 32, positioning pin 33 pass through the fixed interior bars 31 of perforation 34 with
Outer bar 32, ring set has fixing sleeve 35 respectively outside two groups of support rods 17, and fixing sleeve 35 is equipped with and 17 surface of support rod perforation 34
Corresponding location hole 36, positioning pin 33 pass through location hole 36, and correction half-turn 37 is equipped on fixing sleeve 35.
Embodiment 2
As shown in Figure 1, Figure 2；A kind of drawing branch device for capableing of bird repellent for pear tree plantation, including appliance stand 1, device
Bracket 1 is divided to for two groups of equal left supports 12 and right support 13, and appliance stand 1 is that left support 12 and 13 side of right support are hingedly another
The cylindrical structure of composition is bolted in side, if left support 12 and 13 two sides level of right support are angularly provided with dry side
Bar 14 is respectively equipped with mutually if being equipped with dry rubber substance bracing wire 15 on side lever 14 in the middle part of left support 12 and 13 upper and lower ends of right support
Corresponding half clamp ring 16, two and half clamp rings, 16 top is equipped with the support rod 17 perpendicular to ground, wherein 17 upper end of support rod
It is bolted sound box 18, another 17 top of support rod is equipped with bird repellent thorn 19, and 18 inside of sound box is fixed by bearing
There is roller bearing 21, stainless steel elastic slice 22, the same diametral plane in 21 surface of roller bearing are fixed with inside the sound box 18 of side parallel with roller bearing 21
Several evagination acnes 23 are equipped with, is equipped between the evagination acne 23 on the corresponding 21 surface different-diameter face of roller bearing of stainless steel elastic slice 22 and stays side
Slot 24, central spindle one end of roller bearing 21 stretch out sound box 18 and are externally connected to Vane wheel 25, and 25 surface of Vane wheel is equipped with reflective mirror 26.
What is be arranged between evagination acne 23 on the corresponding 21 surface different-diameter face of roller bearing of stainless steel elastic slice 22 stays 24 length of side slot
It is unequal.
As shown in Figure 3；15 one end of rubber bracing wire is fixed on side lever 14, and the other end, which is connected with, draws branch folder 41, draws branch folder 41
Clamping opening on the inside of be respectively fixed with semi-circular gasket 42, draw and be fixed with extruding spring between the clamping opening and semi-circular gasket 42 of branch folder 41
43。
42 inner surface of semi-circular gasket is embedded with foamed gaskets 44.
As shown in Figure 4；Support rod 17 divides for interior bar 31, outer bar 32, positioning pin 33, and 32 lower end of outer bar is by being welded on half folder
16 upper surface of ring, 32 inner hollow of outer bar, 31 one end of interior bar are located inside the hollow structure of outer bar 32, and 31 other end of interior bar is located at
It is equidistant in interior bar 31 and outer bar 32 to be provided with perforation 34 outside outer bar 32, positioning pin 33 pass through the fixed interior bars 31 of perforation 34 with
Outer bar 32, ring set has fixing sleeve 35 respectively outside two groups of support rods 17, and fixing sleeve 35 is equipped with and 17 surface of support rod perforation 34
Corresponding location hole 36, positioning pin 33 pass through location hole 36, and correction half-turn 37 is equipped on fixing sleeve 35.
As shown in Figure 1；1 bottom end of appliance stand is angularly welded with four groups of level boards 51, and four groups of level boards 51 are located at same
Horizontal plane, due to pear tree week survey ground for soil, since rain drop erosion is easy to lead when appliance stand is placed in soil ground surface
Soil erosion is caused, causes appliance stand unstable, inclination is easily caused when carrying out drawing branch, influences to draw branch effect, in appliance stand
Four groups of level boards are arranged in bottom, increase the contact area of appliance stand and ground, avoid run-off the straight.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. a kind of drawing branch device for capableing of bird repellent for pear tree plantation, it is characterised in that: including appliance stand (1), described device
Bracket (1) is divided into two groups of equal left supports (12) and right support (13), and described device bracket (1) is left support (12) and right branch
The cylindrical structure of composition, the left support (12) and right support (13) two is bolted in frame (13) hinged other side in side
Side level is angularly provided with several side levers (14), the side lever (14) if on be equipped with dry rubber substance bracing wire (15), the left branch
Mutual corresponding half clamp ring (16), two and half clamp ring (16) are respectively equipped in the middle part of frame (12) and right support (13) upper and lower ends
Top is equipped with the support rod (17) perpendicular to ground, and wherein support rod (17) upper end has been bolted sound box
(18), another support rod (17) top is equipped with bird repellent thorn (19), is fixed with inside the sound box (18) by bearing
Roller bearing (21), the sound box (18) of side parallel with the roller bearing (21) is internal to be fixed with stainless steel elastic slice (22), the roller bearing
(21) the same diametral plane in surface is equipped with several evagination acnes (23), and corresponding roller bearing (21) surface of the stainless steel elastic slice (22) is different
It is equipped with and stays side slot (24) between evagination acne (23) on diametral plane, central spindle one end of the roller bearing (21), which is stretched out outside sound box (18), to be connected
It is connected to Vane wheel (25), Vane wheel (25) surface is equipped with reflective mirror (26).
A kind of be capable of the drawing branch device of bird repellent for pear tree plantation 2. according to claim 1, it is characterised in that: it is described not
What is be arranged between evagination acne (23) on corresponding roller bearing (21) the surface different-diameter face of rust steel bomb piece (22) stays side slot (24) length not
It is equal.
3. a kind of drawing branch device for capableing of bird repellent for pear tree plantation according to claim 1, it is characterised in that: the branch
Strut (17) is divided into interior bar (31), outer bar (32), positioning pin (33), and outer bar (32) lower end is by being welded on half clamp ring (16)
Upper surface, outer bar (32) inner hollow, described interior bar (31) one end are located inside the hollow structure of outer bar (32), described interior
Bar (31) other end is located at outer bar (32) outside, and the interior bar (31) is provided with perforation (34), institute with equidistant on outer bar (32)
It states positioning pin (33) and passes through perforation (34) fixed interior bar (31) and outer bar (32), the external ring set respectively of two groups of support rods (17)
Have fixing sleeve (35), the fixing sleeve (35) is equipped with location hole (36) corresponding with support rod (17) surface perforation (34), institute
It states positioning pin (33) and correction half-turn (37) is installed on location hole (36), the fixing sleeve (35).
4. a kind of drawing branch device for capableing of bird repellent for pear tree plantation according to claim 1, it is characterised in that: the rubber
Glue bracing wire (15) one end is fixed on side lever (14), and the other end, which is connected with, draws branch folder (41), in the clamping opening for drawing branch folder (41)
Side is respectively fixed with semi-circular gasket (42), is fixed with extruding bullet between the clamping opening and semi-circular gasket (42) for drawing branch folder (41)
Spring (43).
5. a kind of drawing branch device for capableing of bird repellent for pear tree plantation according to claim 4, it is characterised in that: described half
Annular gasket (42) inner surface is embedded with foamed gaskets (44).
6. a kind of drawing branch device for capableing of bird repellent for pear tree plantation according to claim 1, it is characterised in that: the dress
It sets bracket (1) bottom end and is angularly welded with four groups of level boards (51), four groups of level boards (51) are located at same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033358.9A CN109122006A (en) | 2018-09-05 | 2018-09-05 | A kind of drawing branch device for capableing of bird repellent for pear tree plantation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033358.9A CN109122006A (en) | 2018-09-05 | 2018-09-05 | A kind of drawing branch device for capableing of bird repellent for pear tree plantation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109122006A true CN109122006A (en) | 2019-01-04 |
Family
ID=64827058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811033358.9A Pending CN109122006A (en) | 2018-09-05 | 2018-09-05 | A kind of drawing branch device for capableing of bird repellent for pear tree plantation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109122006A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110073885A (en) * | 2019-05-30 | 2019-08-02 | 宁夏农林科学院种质资源研究所（宁夏设施农业工程技术研究中心） | One planting fruit-trees bough branch pulling and angle opening method and branch pulling and angle opening device |
| CN112136804A (en) * | 2020-10-20 | 2020-12-29 | 国网天津市电力公司 | Bird repeller |
| CN114679975A (en) * | 2020-12-31 | 2022-07-01 | 北京农学院 | High-yield labor-saving branch pulling method for fruit trees |
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| CN2241569Y (en) * | 1995-07-26 | 1996-12-04 | 李济 | Wind wheel bell toy |
| KR20090006366A (en) * | 2007-07-11 | 2009-01-15 | 김낙원 | The tools for protecting fruits |
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| CN206836040U (en) * | 2017-06-20 | 2018-01-05 | 国家电网公司 | A kind of Wind bird scaring device |
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| CN207410877U (en) * | 2017-11-10 | 2018-05-29 | 芜湖飞高农业有限公司 | A kind of pear tree with flexible rod draws branch device |
| CN207720776U (en) * | 2018-01-11 | 2018-08-14 | 昆明根茂农业科技有限公司 | A kind of drawing branch apparatus for shaping for dense planting apple tree |
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| CN2241569Y (en) * | 1995-07-26 | 1996-12-04 | 李济 | Wind wheel bell toy |
| KR20090006366A (en) * | 2007-07-11 | 2009-01-15 | 김낙원 | The tools for protecting fruits |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110073885A (en) * | 2019-05-30 | 2019-08-02 | 宁夏农林科学院种质资源研究所（宁夏设施农业工程技术研究中心） | One planting fruit-trees bough branch pulling and angle opening method and branch pulling and angle opening device |
| CN112136804A (en) * | 2020-10-20 | 2020-12-29 | 国网天津市电力公司 | Bird repeller |
| CN114679975A (en) * | 2020-12-31 | 2022-07-01 | 北京农学院 | High-yield labor-saving branch pulling method for fruit trees |
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Application publication date: 20190104 |
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| RJ01 | Rejection of invention patent application after publication |