A cultivation process for garden greening seedlings

Abstract

The present invention relates to a cultivation process for garden greening seedlings, and relates to the field of agricultural and forestry cultivation technology. The process comprises the following steps: first, planting the garden greening seedlings in a cultivation device so that the garden greening seedlings are distributed in an array; second, adjusting the height of each garden greening seedling in a vertical direction by the cultivation device to form a stepped arrangement with different heights, and simultaneously adjusting the orientation of the stepped seedlings in real time according to the direction of sunlight exposure so that the stepped seedlings can always face the direction of sunlight exposure; and third, replenishing water for each garden greening seedling at all times by the cultivation device. The beneficial effect of the process is that the garden greening seedlings are more evenly illuminated during cultivation.

Description

Technical Field

[0001] The present invention relates to the technical field of agriculture and forestry cultivation, in particular to a cultivation process for gardening seedlings. Background Art

[0002] With the rapid development of modern technology today, seedling production is transforming towards scale, factory production and modernization. The development of container seedling technology is the key technology to achieve this transformation. The cultivated seedlings are potted in pots and then transported to various places, thus realizing the sharing of plant landscapes.

[0003] Gardening seedlings are usually cultivated on a large scale. In the case of large-scale planting, seedlings that receive more sunlight will grow better, so the seedlings that grow better will block the sunlight that the adjacent seedlings should receive, resulting in the whole area of seedlings showing that the seedlings with good growth grow better, while the seedlings with poor growth will grow worse and worse. Summary of the Invention

[0004] (1) Technical issues to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a cultivation process for landscaping seedlings, which solves the technical problem of uneven light exposure to the seedlings.

[0006] (2) Technical solution

[0007] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] The embodiment of the present invention provides a cultivation process for landscaping seedlings, comprising:

[0009] Step 1: Planting the garden greening seedlings in the cultivation device so that the garden greening seedlings are distributed in an array shape;

[0010] Step 2: The height of each garden greening seedling is adjusted vertically by the cultivation device to form a stepped arrangement of different heights, and the orientation of the stepped seedlings is adjusted in real time according to the direction of sunlight, so that the stepped seedlings can always face the direction of sunlight;

[0011] Step three, replenish water to each landscaping seedling at all times through the cultivation device.

[0012] An embodiment of the present invention proposes a cultivation process for garden greening seedlings, through which each garden greening seedling can be raised and lowered in the vertical direction, so that the garden greening seedlings can form a stepped distribution with successively decreasing heights. At the same time, the stepped distribution can always face the direction of sunlight, so that each garden greening seedling can receive more uniform light.

[0013] Optionally, the cultivation device in step one includes a cultivation base placed horizontally on the ground, a plurality of cultivation boxes arranged in a horizontal array on the upper side of the cultivation base, a driving module arranged at the upper end of the cultivation base and driving the cultivation boxes to move vertically, and a water replenishment module arranged at the side end of the cultivation base and replenishing water into the cultivation boxes. The driving module drives the plurality of cultivation boxes to form a stepped arrangement on the upper side of the cultivation base facing the direction of light. The driving module includes a driving plate abutting against the lower end face of the cultivation box, and the driving plate rotates in a spatial range with its own center point as the center of a circle. A planting groove is provided on the top of the cultivation box for planting landscaping seedlings.

[0014] When the garden greening seedlings are cultivated by the cultivation device, the garden greening seedlings are first planted in the planting trough. Then, when the sun rises, the driving plate at the bottom drives the upper cultivation base to form a stepped shape facing the sun. At this time, the sunlight can shine on each garden greening seedling. As time goes from morning to night, the direction of sunlight will change. At this time, the driving plate will rotate in a spatial range with its own center as the center of the circle, thereby causing different cultivation boxes to rise, so that the stepped state formed by the cultivation box continues to face the direction of sunlight, so that the seedlings cultivated by the cultivation device can receive light more evenly. At the same time, the seedlings are replenished with water through the water replenishment module, so that they will not suffer from water shortage while receiving sufficient light, thereby making the seedlings grow more vigorously.

[0015] Optionally, the driving module also includes a driving box arranged on the upper end surface of the cultivation base, and a plurality of water storage chambers are vertically opened on the upper end surface of the driving box. The plurality of water storage chambers are arranged in an array, and a driving float is provided in the water storage chamber, which floats up and down with the change of the horizontal plane height inside the water storage chamber. The upper end surface of the driving float protrudes from the water storage chamber and abuts against the lower end surface of the driving plate. A connecting rod is vertically provided in the middle of the cultivation base, and one end of the connecting rod passes through the middle of the driving box and is ball-jointed in the middle of the lower end surface of the driving plate.

[0016] When the driving module is working, it changes the water level in each water storage chamber so that the driving float can float up and down in the water storage chamber. By injecting different amounts of water into different water storage chambers at different time periods, the driving float can float and sink in a staggered manner, and then the driving plate rotates in space with its own center as the center of the circle, so that the cultivation box can move vertically to form a stepped distribution that is always facing the sunlight. At the same time, when the floating and sinking movement of a certain driving float is hindered, the remaining driving floats can still drive the driving plate.

[0017] Optionally, a retaining frame extending to the periphery of the cultivation box is provided at the peripheral end of the cultivation base, and a retaining socket for vertical sliding connection of the cultivation box is vertically opened on the retaining frame.

[0018] The cultivation box is vertically slidably connected to the retaining socket, so that the cultivation box can be vertically lifted and lowered through the retaining frame, thereby preventing the cultivation box from tilting during lifting, thereby causing the seedlings planted in the cultivation box to grow crookedly.

[0019] Optionally, a first stabilizing ball is rolled and embedded in the lower end of the cultivation box, and the first stabilizing ball rolls and abuts against the upper end surface of the driving plate. A second stabilizing ball is rolled and embedded in the top of the driving float, and the second stabilizing ball abuts against the lower end surface of the driving plate.

[0020] When the driving float pushes the driving plate to rotate, they are directly pushed by friction. Similarly, the driving plate pushes the cultivation box to move vertically by friction, and the whole process is more laborious. In this solution, a first stabilizing ball is rolled and embedded at the lower end of the cultivation box, and a second stabilizing ball is rolled and embedded at the top of the driving float, so that rolling friction occurs between the driving float, the cultivation box and the driving plate, thereby reducing the energy required for the entire device to work, and making the entire device work more smoothly.

[0021] Optionally, the drive box is provided with a micro water pump between each two adjacent water storage chambers, the micro water pump delivers water in one direction, and all the micro water pumps in the drive box form a water flow loop between the multiple water storage chambers.

[0022] By arranging a micro water pump between two adjacent water storage chambers, the micro water pump can only carry out one-way water supply, so that multiple micro water pumps connect multiple water storage chambers in sequence, thereby forming a water flow loop, and the water in the water storage chamber can be transferred in sequence, thereby realizing the sequential rise and fall of the driving float, so that the driving plate can complete the rotation within the spatial range.

[0023] Optionally, the water replenishment module includes a water replenishment ring pool arranged at the side end of the cultivation base, and a first water replenishment pump is provided at the side end of the cultivation base. The water inlet end of the first water replenishment pump is connected to the water replenishment ring pool, and the water outlet end of the first water replenishment pump is connected to the water storage chamber.

[0024] After the cultivation device has been used for a long time, the water in the water storage chamber will partially evaporate, causing the height of the driving plate to drop and eventually stop running. In this solution, a water replenishment ring pool is set at the side end of the cultivation base, and the water in the water replenishment ring pool is transported to a water storage chamber through a first water replenishment pump, so that there is always enough water in the water storage chamber to keep the driving plate working.

[0025] Optionally, the water replenishment module also includes a water replenishment network pipe arranged on the upper side of the retaining frame, a water dripping nozzle arranged in an interval array at the lower side end of the water replenishment network pipe, and a second water replenishment pump arranged at the side end of the retaining frame, each of the water dripping nozzles is located on the upper side of each of the cultivation boxes, the water inlet end of the second water replenishment pump is connected to the water replenishment ring pool, and the water outlet end of the second water replenishment pump is connected to the water replenishment network pipe.

[0026] The water in the water supply ring pool is transported to the water supply network pipe through the second water supply pump, and then dripped into the cultivation box through the drip nozzle at the lower end of the water supply network pipe, so that the seedlings in the cultivation box will not lose water while receiving sufficient sunlight, thereby making the seedlings grow healthier.

[0027] Optionally, the cultivation box is cylindrical, and a rotating module is provided at the upper end of the retaining frame to drive each cultivation box to rotate about its own axis. The rotating module includes a rotating sleeve coaxially embedded in the retaining socket and a rotating ball rollingly embedded in the circumferential side end of the cultivation box. A spiral rotating groove is provided on the inner side wall of the rotating sleeve, and the rotating ball is rollingly embedded in the rotating groove.

[0028] The entire cultivation device itself does not rotate, so when the landscaping seedlings are distributed in a stepped manner, there will always be a side that receives less sunlight or even no sunlight. This solution sets up a rotation module, so that while the cultivation box moves vertically, it rotates around its own axis under the drive of the rotating balls and the spiral rotating groove on the inner wall of the rotating sleeve, so that the cultivation box can not only be raised and lowered vertically, but also rotated, so that the seedlings planted in the cultivation box can receive more uniform light.

[0029] Optionally, light intensity detection probes are evenly spaced around the cultivation base, and the light intensity detection probes control the water level in the water storage cavity.

[0030] The direction of the rising sun will be slightly different in each season of the year. If the starting rotation position of the driving plate is set directly, the stepped shape formed by the lifting of the cultivation box may not correspond to the direction of light in some seasons. In this scheme, light intensity detection probes are evenly arranged at intervals around the circumferential side ends of the cultivation base. The light intensity detection probes detect the light intensity from different directions, thereby determining the initial position of the light and the speed of change of the light direction, and then controlling the working state of the micro water pump in the cultivation device.

[0031] (3) Beneficial effects

[0032] The beneficial effects of the present invention are: the cultivation process of the garden greening seedlings of the present invention, because each garden greening seedling can be raised and lowered in the vertical direction through this process, so that the garden greening seedlings can form a stepped distribution with successively decreasing heights, and at the same time, the stepped distribution can always face the direction of sunlight, so that each garden greening seedling can receive more uniform light. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0034] Figure 2 2 is a cross-sectional view of an embodiment of the present invention.

[0035] [Description of Reference Numerals]

[0036] 1. Cultivation device; 11. Cultivation base; 12. Cultivation box; 121. Planting trough; 122. First stabilizing ball; 13. Driving module; 131. Driving plate; 132. Driving box; 1321. Water storage chamber; 1322. Driving float; 1323. Second stabilizing ball; 1324. Micro water pump; 133. Connecting rod; 14. Water supply module; 141. Water supply ring pool; 142. First water supply pump; 143. Water supply network pipe; 144. Second water supply pump; 145. Drip nozzle; 15. Rotating module; 151. Rotating sleeve; 1511. Rotating slide; 152. Rotating ball; 16. Holding frame; 161. Holding socket; 162. Support plate; 17. Light intensity detection probe. DETAILED DESCRIPTION

[0037] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0038] The cultivation process of garden greening seedlings proposed in the embodiment of the present invention is that each garden greening seedling can be raised and lowered in the vertical direction through this process, so that the garden greening seedlings can form a stepped distribution with successively decreasing heights. At the same time, the stepped distribution can always face the direction of sunlight, so that each garden greening seedling can receive more uniform light.

[0039] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0040] Reference Figure 1 and Figure 2 A cultivation process for garden greening seedlings includes: step one, planting the garden greening seedlings in a cultivation device 1 so that the garden greening seedlings are distributed in an array shape; step two, adjusting the height of each garden greening seedling in a vertical direction through the cultivation device 1 to form a stepped arrangement with different heights. While adjusting the height, the cultivation device 1 rotates each seedling around a vertical circumference as an axis, and at the same time adjusts the direction of the stepped seedlings in real time according to the direction of sunlight, so that the stepped seedlings can always face the direction of sunlight; step three, replenishing water for each garden greening seedling at all times through the cultivation device 1.

[0041] The cultivation device 1 includes a cultivation base 11 placed horizontally on the ground, a plurality of cultivation boxes 12 arranged in a horizontal array on the upper side of the cultivation base 11, a driving module 13 arranged at the upper end of the cultivation base 11 and driving the cultivation box 12 to move vertically, a water replenishment module 14 arranged at the side end of the cultivation base 11 and replenishing water into the cultivation box 12, and a rotation module 15 driving the cultivation box 12 to rotate.

[0042] The driving module 13 includes a driving box 132 welded to the upper end surface of the cultivation base 11 and a driving plate 131 located on the upper side of the driving box 132. The upper end surface of the driving box 132 is vertically provided with nine water storage chambers 1321. The nine water storage chambers 1321 are arranged in an array. Except for the water storage chamber 1321 in the middle, the other water storage chambers 1321 are filled with part of the water. A driving float 1322 is vertically inserted into the water storage chamber 1321, which floats up and down as the height of the horizontal surface inside the water storage chamber 1321 changes. The top of the driving float 1322 protrudes from the opening at the upper end of the water storage chamber 1321. The middle of the upper end surface of the cultivation base 11 A connecting rod 133 is vertically welded, and the connecting rod 133 vertically passes through the water storage chamber 1321 located in the middle. The top of the connecting rod 133 is ball-connected to the middle of the lower end surface of the driving plate 131, so that the driving plate 131 can rotate in the spatial direction at the center of the part where the connecting rod 133 is ball-connected. A second stabilizing ball 1323 is embedded in the top of the driving float 1322, and the second stabilizing ball 1323 abuts against the lower end surface of the driving plate 131. By changing the height of the horizontal plane in the water storage chamber 1321, the vertical movement of the driving float 1322 is achieved, and then the rotation of the driving plate 131 in the spatial direction is achieved.

[0043] A micro water pump 1324 is fixed to the drive box 132 between each two adjacent water storage chambers 1321 by bolts. The water inlet and water outlet of the micro water pump 1324 are respectively connected to the two adjacent water storage chambers 1321. The micro water pump 1324 performs unidirectional water supply. All the micro water pumps 1324 in the drive box 132 form a water flow loop between the eight water storage chambers 1321. The water amount in different water storage chambers 1321 can be adjusted by the micro water pump 1324.

[0044] Two support plates 162 are vertically welded to the upper end surface of the cultivation base 11 on both sides of the drive box 132, and a retaining frame 16 is horizontally welded to the top of the two support plates 162. The retaining frame 16 is vertically provided with a plurality of retaining sockets 161 for vertical sliding connection of the cultivation box 12, and the plurality of retaining sockets 161 are arranged in an array.

[0045] The cultivation box 12 is cylindrical, and a planting trough 121 for planting garden seedlings is vertically opened on the top of the cultivation box 12.

[0046] A first stabilizing ball 122 is embedded in the bottom of the cultivation box 12, and the first stabilizing ball 122 rolls against the upper end surface of the driving plate 131, so that as the driving plate 131 rotates within the spatial range, the cultivation boxes 12 arranged in an array will form a stepped arrangement on the upper side of the cultivation base 11 facing the direction of light.

[0047] The rotating module 15 comprises a rotating sleeve 151 coaxially mounted and bolted into a retaining socket 161, and rotating balls 152 rollingly mounted on the side of the cultivation box 12. The cultivation box 12 slides vertically within the rotating sleeve 151. A spiral rotating groove 1511 is defined on the inner wall of the rotating sleeve 151, and the rotating balls 152 rollably mount within the rotating groove 1511. As the cultivation box 12 moves vertically, it rotates about its own axis, guided by the rotating balls 152 and the rotating groove 1511.

[0048] The water replenishment module 14 includes a water replenishment ring pool 141 welded to the side end of the cultivation base 11, a water replenishment network pipe 143 horizontally welded to the upper side of the retaining frame 16, drip nozzles 145 welded to the lower side end of the water replenishment network pipe 143 in an interval array, and a second water replenishment pump 144 fixed to the side end of the retaining frame 16 by bolts.

[0049] The water inlet of the second water supply pump 144 is inserted into the water supply ring pool 141, and the water outlet of the second water supply pump 144 is connected to the water supply network pipe 143 via bolts. The second water supply pump 144 transfers water from the water supply ring pool 141 to the water supply network pipe 143. The water then drips into the cultivation box 12 through the drip nozzle 145 at the lower end of the water supply network pipe 143. This ensures that the seedlings in the cultivation box 12 receive sufficient sunlight while not losing water.

[0050] A first water replenishment pump 142 is fixed to the side end of the drive box 132 by bolts. The water inlet end of the first water replenishment pump 142 is connected to the water replenishment ring pool 141, and the water outlet end of the first water replenishment pump 142 is connected to a water storage chamber 1321. The water in the water replenishment ring pool 141 is transported to the water storage chamber 1321 through the first water replenishment pump 142, so that there is always enough water in the water storage chamber 1321 to keep the drive plate 131 working.

[0051] Light intensity detection probes 17 are fixed on the outer side wall of the water replenishment ring pool 141 at evenly spaced intervals around the circumference by bolts. The light intensity detection probes 17 can detect the intensity of the received light, thereby controlling the working state of the micro water pump 1324 in the drive box 132, and thus controlling the water level height in different water storage chambers 1321.

[0052] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0053] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0054] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0055] In the description of this specification, the terms "one embodiment", "some embodiments", "embodiments", "examples", "specific examples" or "some examples" refer to the specific features, structures, materials or characteristics described in conjunction with the embodiment or example and included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0056] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A cultivation process for landscaping seedlings, characterized by: include, Step 1: Planting the garden greening seedlings in the cultivation device (1) so that the garden greening seedlings are distributed in an array shape; Step 2: adjusting the height of each garden greening seedling in the vertical direction by the cultivation device (1) to form a stepped arrangement with different heights, and adjusting the orientation of the stepped seedlings in real time according to the direction of sunlight, so that the stepped seedlings can always face the direction of sunlight; Step 3, replenishing water to each garden greening seedling at all times through the cultivation device (1); The cultivation device (1) comprises a cultivation base (11) placed horizontally on the ground, a plurality of cultivation boxes (12) arranged in a horizontal array on the upper side of the cultivation base (11), a driving module (13) arranged at the upper end of the cultivation base (11) and driving the cultivation boxes (12) to move vertically, and a water supply module (14) arranged at the side end of the cultivation base (11) and supplying water to the cultivation boxes (12). The driving module (13) drives the plurality of cultivation boxes (12) to form a stepped arrangement on the upper side of the cultivation base (11) facing the direction of light. The driving module (13) comprises a driving plate (131) abutting against the lower end surface of the cultivation box (12). The driving plate (131) rotates in a spatial range with its own center point as the center of a circle. The top of the cultivation box (12) is provided with a water supply for the garden. A planting trough (121) for planting green seedlings, the driving module (13) further comprises a driving box (132) arranged on the upper end surface of the cultivation base (11), the upper end surface of the driving box (132) is vertically provided with a plurality of water storage chambers (1321), the plurality of water storage chambers (1321) are arranged in an array, a driving float (1322) is provided in the water storage chamber (1321) and floats up and down as the height of the internal horizontal surface of the water storage chamber (1321) changes, the upper end surface of the driving float (1322) protrudes from the water storage chamber (1321) and abuts against the lower end surface of the driving plate (131), a connecting rod (133) is vertically provided in the middle of the cultivation base (11), one end of the connecting rod (133) passes through the middle of the driving box (132) and is ball-jointed to the middle of the lower end surface of the driving plate (131).

2. The cultivation process for landscaping seedlings according to claim 1, wherein: A retaining frame (16) extending to the peripheral side of the cultivation box (12) is provided at the peripheral end of the cultivation base (11), and a retaining socket (161) for vertical sliding connection of the cultivation box (12) is vertically opened on the retaining frame (16).

3. The cultivation process for landscaping seedlings according to claim 2, characterized in that: A first stabilizing ball (122) is rollingly embedded in the lower end of the cultivation box (12), and the first stabilizing ball (122) rolls against the upper end surface of the driving plate (131). A second stabilizing ball (1323) is rollingly embedded in the top of the driving float (1322), and the second stabilizing ball (1323) abuts against the lower end surface of the driving plate (131).

4. The cultivation process for landscaping seedlings according to claim 2, wherein: The drive box (132) is provided with a micro water pump (1324) between each two adjacent water storage chambers (1321). The micro water pump (1324) delivers water in one direction. All the micro water pumps (1324) in the drive box (132) form a water flow loop between the multiple water storage chambers (1321).

5. The cultivation process for landscaping seedlings according to claim 4, characterized in that: The water replenishment module (14) comprises a water replenishment ring pool (141) arranged at the side end of the cultivation base (11); a first water replenishment pump (142) is provided at the side end of the cultivation base (11); the water inlet end of the first water replenishment pump (142) is connected to the water replenishment ring pool (141), and the water outlet end of the first water replenishment pump (142) is connected to the water storage chamber (1321).

6. The cultivation process for landscaping seedlings according to claim 5, characterized in that: The water replenishment module (14) further comprises a water replenishment network pipe (143) arranged on the upper side of the retaining frame (16), drip nozzles (145) arranged in an array at intervals on the lower side of the water replenishment network pipe (143), and a second water replenishment pump (144) arranged on the side end of the retaining frame (16), each of the drip nozzles (145) being located on the upper side of each of the cultivation boxes (12), a water inlet end of the second water replenishment pump (144) being connected to the water replenishment ring pool (141), and a water outlet end of the second water replenishment pump (144) being connected to the water replenishment network pipe (143).

7. The cultivation process for landscaping seedlings according to claim 2, characterized in that: The cultivation box (12) is cylindrical, and a rotation module (15) is provided at the upper end of the holding frame (16) for driving each cultivation box (12) to rotate about its own axis. The rotation module (15) comprises a rotation sleeve (151) coaxially embedded in the holding socket (161) and a rotation ball (152) rollingly embedded in the circumferential end of the cultivation box (12). The inner side wall of the rotation sleeve (151) is provided with a spiral rotation groove (1511), and the rotation ball (152) rollingly embedded in the rotation groove (1511).

8. The cultivation process for landscaping seedlings according to claim 1, characterized in that: Light intensity detection probes (17) are evenly spaced around the cultivation base (11), and the light intensity detection probes (17) control the water level in the water storage chamber (1321).

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