Combined Chinese yam tuber growth tank arranged in trench

Abstract

A combined Chinese yam tuber growth groove arranged in a trench belongs to agricultural planting appliances, the Chinese yam tuber growth groove comprises a combination part, a space part and a base, the combination part is used for overlapping an upper Chinese yam tuber growth groove and a lower Chinese yam tuber growth groove, and the Chinese yam tuber growth grooves are combined to form a Chinese yam tuber growth space. According to the Chinese yam tuber growing device, Chinese yam tubers are separated from soil, occurrence of soil infectious diseases is avoided, growth resistance of the Chinese yam tubers is reduced, and the Chinese yam tuber growing device has the advantages that the Chinese yam tuber growing device is simple in structure, convenient to use and high in yield, and the yield of the Chinese yam tubers is increased. Chinese yam tubers grow in the shallow soil layer, the planting density is increased, the tower furrow phenomenon is avoided, the yield and quality of Chinese yams are improved, the plot planting limitation is overcome, the planting range is expanded, mechanical planting is achieved, and the income of farmers is increased.

Description

Technical Field

[0001] This utility model relates to a yam tuber growth trough, and more particularly to a combined yam tuber growth trough set in a ditch, belonging to agricultural planting equipment. Background Technology

[0002] Yam belongs to the Dioscorea genus of the Dioscoreaceae family. It is used for both food and medicine. The main varieties cultivated in my country include: Henan Huai yam, Taigu yam, Wutong yam, Ximao long yam, Cai yam, Jining rice yam, Nongda long yam, Ma yam, Huai yam, Shuangbao yam, Dahe long yam, and more than 20 other varieties.

[0003] Traditional cultivation methods involve manually digging and filling ditches during planting and manually digging during harvest. This is labor-intensive, time-consuming, and results in low yam yields and poor quality. With the advancement of technology, the multi-functionality of agricultural machinery, and the application of new materials, yam cultivation techniques are constantly being innovated.

[0004] Current yam cultivation methods mainly include: 1. Mulch-type cultivation method; 2. Shallow trough and box-type cultivation method; 3. Trench and hole-type cultivation method.

[0005] Mulch-grown cultivation: Compared with traditional cultivation, although ditch planting is adopted, there are still problems of low yield and poor quality. Once the ditch collapses, it will lead to reduced yam production or crop failure.

[0006] Shallow trough and box-type cultivation: To a certain extent, it reduces the resistance of soil to the growth of yam tubers and has the effect of increasing yield. However, it cannot be planted densely and limits the yield. Compared with ridge cultivation and hole-drilling and filling cultivation, the degree of mechanization at harvest and planting is low and labor-intensive.

[0007] While cultivation in open trenches and cavities has certain advantages, it is not suitable for all varieties of yam. The product quality and yield are not high, and it is not suitable for all types of soil. Its fatal weakness is that the trenches and cavities are prone to collapse, resulting in reduced yield or crop failure.

[0008] How to further improve product quality, increase yield, and prevent ditch collapse are topics that need further research in yam cultivation. Summary of the Invention

[0009] To address the problems of excessively deep trenches required for planting yams in existing yam production, the tendency for loose soil to collapse, and low yam quality and yield, we have, after years of exploration and research, invented a combined yam tuber growth trough designed for use in trenches. Its purpose is to increase planting density, prevent trench collapse, improve yam yield and quality, overcome land use limitations, expand the planting area, and enable mechanized trenching, hilling, and harvesting, thereby increasing farmers' income.

[0010] The technical solution of this utility model is: a combined yam tuber growth trough set in a ditch. The yam tuber growth trough includes a combination part, a space part, and a top cover or base. The combination part is located at the upper and lower ends of the growth trough. The combination part combines the upper and lower yam growth troughs. After two or more growth troughs are combined, they form one or more yam tuber growth spaces set in the ditch. The upper or lower part of the combined growth trough is provided with a top cover or base. The yam tuber growth trough is a plastic material component. Each growth trough has an opening at both ends. The upper edge of the upper opening is parallel to the ground where the ditch is located, and the lower edge of the lower opening is parallel to the bottom surface of the ditch. One or more rows of combined yam tuber growth troughs are placed in a ditch. The length direction of the growth trough forms an angle with the ground.

[0011] The positive effects of this invention are as follows: By designing a combination section and a space section in the yam tuber growth trough, the combination section can be used to stack and combine yam tuber growth troughs to form a yam tuber growth space; by stacking and combining multiple yam tuber growth troughs or arranging the combined yam tuber growth troughs in the ditch, multi-layer and multi-row yam tuber growth spaces can be formed; the stacking and combination or the arrangement of stacked combinations of yam tuber growth troughs can increase the planting density of yams and increase the yield of yams; yam tubers can extend freely and without obstruction within the space of the growth trough, forming smooth and clean yam tubers; by laying agricultural film at the opening at the end, soil leakage can be prevented. The system creates a growing space for yam tubers. Multiple stacked yam tuber growing troughs are positioned at the same angle to their length at their ends. The upper edges of these stacked troughs are kept at ground level, while the lower edges are laid parallel to the bottom of the trench. This extends the length of the growing troughs and reduces the trench depth. During harvest, the troughs containing the yam tubers can be easily removed sequentially from top to bottom, ensuring a successful harvest. This method keeps the yam tubers free of soil, prevents trench collapse, and reduces the labor intensity for farmers. A modular design allows for the stacking and combination of multiple troughs, facilitating stable placement and removal from the trench, and simplifying transportation. The length of the growing troughs is set between 0.3 and 2.5 meters, the width between 2 and 30 centimeters, and the height between 2 and 25 centimeters. The planting trench can be selected according to the length and diameter of the yam tubers. The depth of the trench and the angle between the side edge of the yam tuber growth trench and its length direction can be calculated and determined simultaneously. The number of trenches can also be determined based on the width of the trench. By using hinges to connect the bottom and sides of the yam tuber growth trench, and by correspondingly reducing the cross-section of the trench, the shape of the yam tubers is made to conform to the shape inside the trench. When removing the yam tubers from the trench, the hinges can be used to open the trench walls, facilitating removal and peeling. This invention separates the yam tubers from the soil, reducing soil-borne diseases, lowering growth resistance, promoting shallow soil growth, increasing planting density, preventing trenching, improving yam quality and yield, overcoming land use limitations, expanding the planting area, maximizing mechanized trenching and hilling, and simplifying harvesting, thus significantly increasing farmers' income. Attached Figure Description

[0012] Figure 1 A schematic diagram of the end face of a single rectangular yam tuber growth groove.

[0013] Figure 2 A schematic diagram of the side structure of a rectangular yam tuber growth trough.

[0014] Figure 3 A schematic diagram of the lower end face structure of a rectangular yam tuber growth trough with a top cover.

[0015] Figure 4 A schematic diagram of the superimposed end face structure of multiple rectangular yam tuber growth grooves.

[0016] Figure 5 A schematic diagram of the superimposed side structure of the yam tuber growth trough set in the trench.

[0017] Figure 6 A schematic diagram of the end face structure of two superimposed circular yam tuber growth grooves.

[0018] Figure 7 A schematic diagram of the end face structure of the circular growth tank base.

[0019] Figure 8 Schematic diagram of the end face structure of the circular assembly frame.

[0020] Figure 9 A schematic diagram of the end face structure with multiple circular growth grooves superimposed.

[0021] Labeling Explanation: 10-Yam tuber growth trough, 11-Rectangular space section, 11a-Rectangular yam tuber growth trough, 12-Assembly section, 12a-Upper assembly section, 12b-Lower assembly section, 13-Top cover, 14-Yam tuber, 15a-Upper side, 15b-Lower side, 16-Yam planter, 17-Covering layer, 18-Angle, 19-Ditch, 19a-Ground surface, 19b-Ditch bottom, 21-Circular space section, 21a-Circular yam tuber growth trough, 22-Circular assembly frame, 22a-Circular upper assembly section, 22b-Circular lower assembly section, 23-Circular growth trough base, 24-Binding strap, 25-Hook and loop fastener, 26-Plastic film. Detailed Implementation

[0022] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] The technical solution of this utility model is: a combined yam tuber growth trough 10 installed in a ditch. The yam tuber growth trough 10 includes a combination part 12, a space part 11, and a top cover 13. The combination part 12 is used for the stacking of upper and lower yam tuber growth troughs. Two or more yam tuber growth troughs are stacked and combined through the combination part 12 to form one or more yam tuber growth troughs. The stacked yam tuber growth troughs are provided with a top cover 13 or a base. The yam tuber growth trough 10 is made of plastic material components, and each yam tuber growth trough 10 has a top cover 13 or a base. The ditch 10 has an opening with its side parallel to the ground surface 19a. The side parallel to the ground includes an upper side 15a and a lower side 15b. The side parallel to the ground surface 19a forms an angle 18 with the length direction of the yam tuber growth trough 10. The upper side 15a of the upper end of each yam tuber growth trough 10 is at the same height as the ground. The lower side 15b of the lower end of each yam tuber growth trough 10 is in contact with the bottom surface 19b of the ditch. One or more rows of stacked yam tuber growth troughs 10 are provided in one ditch 19.

[0024] The bottom of the yam tuber growth trough 10 and the two side walls of the trough are connected by a fixed method or a hinged method. The hinged connection method includes a single-sided hinged connection method and a two-sided hinged connection method.

[0025] In this embodiment, the yam tuber growth trough 10 adopts a rectangular yam tuber growth trough 11a and a circular yam tuber growth trough 21a. In order to improve the combined strength of the rectangular yam tuber growth trough 11a, before assembly, the left and right sides and the bottom of the rectangular yam tuber growth trough 11a form an inverted V-shaped structure extending outward from the top, that is, a water channel-like structure. During assembly, the elasticity of the plastic material is used to assemble it at the assembly part 12, so that it forms a rectangular yam tuber growth trough 10. The opening of the rectangular yam tuber growth trough 11a faces upward and is provided with a top cover 13. The circular yam tuber growth trough 21a is provided with a circular growth trough base 23 located at the bottom of the trench 19b.

[0026] The shape of the yam tuber growth groove 10 includes polygonal, circular, elliptical and irregular shapes. In the following embodiments, a rectangular yam tuber growth groove 11a and a circular yam tuber growth groove 21a are listed.

[0027] The overlapping methods of the upper and lower yam tuber growth grooves 10 include mortise and tenon structure, snap-fit ​​structure, binding structure, push-pull structure, plug-in structure, guide rail structure and its hinge structure. In the following embodiment 1, the rectangular yam tuber growth groove 11a adopts the overlapping combination of snap-fit ​​structure and guide rail structure, and the circular yam tuber growth groove space adopts the overlapping combination of binding structure.

[0028] An angle 18 is set between the upper edge 15a, which is parallel to the ground surface 19a of the ditch 19, and the length direction of the yam tuber growth trough 10. This angle is between 10° and 90°. The ends of the multiple stacked yam tuber growth troughs 10 have the same angle with their length direction. The upper edge 15a and lower edge 15b of the upper and lower ends are parallel to the ground surface 19a and the bottom surface 19b of the ditch 19 in the horizontal direction.

[0029] The length of the yam tuber growth trough 10 is 0.3-2.5m, the width is 2-30cm, the height is 2-25cm, and the thickness is 0.2-5mm. The thickness of the plastic material is 2-30mm. Generally, one row is set in a trench 19, or multiple rows of yam tuber growth troughs 10 can be placed side by side in a stacked combination.

[0030] In this embodiment, the minimum included angle 18 at the end of the yam tuber growth groove 11 is optimized to be between 10° and 60°.

[0031] In this embodiment, the rectangular yam tuber growth trough 11a is made of plastic. Figure 1 This is a schematic diagram of the end face of a single rectangular yam tuber growth groove. Figure 2 Schematic diagram of the side structure of a rectangular yam tuber growth trough. Figure 3 This is a schematic diagram of the lower end face structure of a rectangular yam tuber growth trough with a top cover. Figure 4 This is a schematic diagram of the superimposed end face structure of multiple rectangular yam tuber growth grooves. Figure 5This is a schematic diagram of the superimposed side structure of a yam tuber growth trough set in a ditch. In Example 1, a rectangular yam tuber growth space 11a was used to form a rectangular yam tuber growth trough space. The assembly part 12 of the rectangular yam tuber growth groove 10 includes an upper assembly part 12a and a lower assembly part 12b. Specifically, the assembly part 12 includes a pair of upper assembly parts 12a located above the rectangular yam tuber growth groove 11a and a pair of lower assembly parts 12b located below the rectangular yam tuber growth groove 11a. The pair of upper assembly parts 12a and the pair of lower assembly parts 12b are matched with each other. After being stacked, the multiple rectangular yam tuber growth grooves 11a formed are provided with a top cover 13 at the top. The pair of upper assembly parts 12a can be pushed and pulled along the length direction of the rectangular yam tuber growth groove 11a along the snap-fit ​​structure formed in the pair of lower assembly parts 12b, so as to realize the stacking and disassembly of the rectangular yam tuber growth grooves 11a. The upper edge 15a and lower edge 15b at the ends of the multiple stacked rectangular yam tuber growth grooves 11a are aligned with their length direction. The included angle 18 formed between the long sides is the same. The upper side 15a or lower side 15b of the upper and lower ports are parallel to the ground 19a and the bottom surface 19b of the trench 19, respectively, and are all in the horizontal direction. The number of overlapping rectangular yam tuber growth troughs 11a depends on the length of the trench 19. The depth of the trench 19 depends on the included angle of the rectangular yam tuber growth troughs 11a. The number of parallel ones depends on the width of the trench 19. After the rectangular yam tuber growth troughs 11a are inclined and placed in the trench, the ground 19a on both sides of the port where the upper side 15a is located is covered with plastic film 26. Then, yam seedlings 16 (first spring) or yam seedlings (second spring) are placed on it. Finally, a fertile soil covering layer 17 is covered. The growing yam tubers 14 will break through the plastic film 26 and extend along the space 11 of the rectangular yam tuber growth trough.

[0032] In this embodiment, the circular yam tuber growth trough 10 also uses plastic products.

[0033] Figure 6 This is a schematic diagram of the end face structure of two superimposed circular yam tuber growth grooves. Figure 7 This is a schematic diagram of the end face structure of the circular base. Figure 8 This is a schematic diagram of the end face structure of the circular assembly frame. Figure 9 This is a schematic diagram of an end-face structure with multiple superimposed circles, see reference. Figure 5The circular yam tuber growth groove 21a forms a circular space 21 for the growth of yam tubers. The assembly part 12 of the circular yam tuber growth groove 21a is composed of a circular assembly frame 22, which includes a circular upper assembly part 22a and a circular lower assembly part 22b. Circular yam tuber growth grooves 21a are respectively provided on the circular upper assembly part 22a and the circular lower assembly part 22b. Similarly, there is an inclined angle 18 between the upper edge 15a and the lower edge 15b of the upper and lower end faces and the ground 19a and the bottom surface 19b of the trench. The circular yam tuber growth grooves 2a1 provided on the circular upper assembly part 22a and the circular lower assembly part 22b can be stacked by multiple circular assembly frames 22 to form multiple circular yam tuber growth grooves 21a. In this embodiment, a binding strap 24 with Velcro 25 is used. The circular yam tuber growth troughs 21a are bound together around their outer perimeter a to achieve the stacking and disassembly of the circular yam tuber growth troughs 21a. The number of circular yam tuber growth troughs 21a stacked below the bottom circular combination frame 22 using the circular base 23 depends on the length of the ditch 19. The number of combination rows set side by side in the ditch depends on the width of the ditch 19. After the circular yam tuber growth troughs 21a are placed in the ditch, a plastic film 26 is covered on the port formed by its upper edge 15a. Yam seedlings 16 (first spring) or yam seedlings (second spring) are placed on it. Fertile soil layer 17 is covered on the plastic film 26 and on the ground 19a on both sides. The growing yam tubers 14 will break through the plastic film 26 and extend along the circular space 21 of the circular yam tuber growth troughs 21a.

[0034] Although the rectangular yam tuber growth trough 11a or the circular yam tuber growth trough 21a structures are listed above, the invention is not limited to these two types. In addition, two structures are listed in the assembly section, but they are not limited to these two types either.

[0035] Although the yam tuber growth trough in this embodiment is made of plastic, other non-metallic plastic materials can also be used, such as aluminum alloy and stainless steel.

[0036] By combining the assembly section 12 and the space section 11 of the yam tuber growth trough 10, the yam tuber growth trough 10 space can be formed by superimposing the assembly section 12. By superimposing or arranging multiple yam tuber growth troughs 10 in the trench 19, multi-layer and multi-row yam tuber growth trough space can be formed. The superimposing or arranging of the yam tuber growth troughs 10 can increase the planting density of yams and increase the yield of yams. By opening at the end of each yam tuber growth trough 10, after the rectangular space section 11 and the circular space section 21 of the yam tuber growth trough are formed, the yam tuber 14 can extend freely into the rectangular space section 11 and the circular space section 21 without obstruction, thus forming smooth and clean yams. Tuber 14; Agricultural film is installed at the end opening to prevent soil from leaking into the yam tuber growth trough space, and also to facilitate the yam tuber 14 breaking through the plastic film and entering the yam tuber growth trough space; By designing the end edge of the yam tuber growth trough 10 to form an angle 18 with its length direction, and having multiple stacked yam tuber growth troughs 10 with the same angle 18 with their length direction, the depth of the ditch 19 can be reduced, and the length of the yam tuber growth trough 10 can be extended, which is conducive to the free growth of yam tubers, thereby reducing the labor intensity of digging the ditch 19 and planting and harvesting. Yam tubers 14 can grow in multiple yam tuber growth trough spaces, increasing yield by 30% compared with existing technologies. The yield is 40%-40%. During harvest, the yam tuber growing troughs 10 containing yam tubers 14 can be easily removed from top to bottom, ensuring a successful harvest. This method keeps the yam tubers 14 free of soil, prevents the collapse of the ditch 19, and reduces the labor intensity of farmers. Experimental calculations show that this invention can save more than 40% of labor time compared to existing technologies. The ditch 19 can be equipped with a single row or multiple rows of stacked yam tuber growing troughs 10 as needed, increasing yam yield. By providing a combination part 12 on the yam tuber growing troughs 10, multiple yam tuber growing troughs 10 can be stacked and combined, facilitating stable installation. It can be placed in or taken out of the ditch 19, which also facilitates transportation; by setting the length of the yam tuber growth trough 10 to 30-250cm and the width to 2-30cm, the appropriate length and width of the plastic material can be selected according to the type of yam, the length and diameter of its tuber growth, to determine the depth of the ditch, and to determine the angle between the side of the end of the yam tuber growth trough 10 and the length direction of the yam tuber growth trough 10. At the same time, the number of troughs can also be determined in combination with the width of the ditch. Compared with the prior art, the depth of the ditch 19 can be reduced to 60cm-1m using this utility model, which is lower than the 250-300cm of the prior art, thus reducing the depth of the ditch and reducing the labor intensity.By using hinges to connect the bottom and side walls of the yam tuber growth trough, the cross-section of the growth trough can be reduced accordingly, allowing the yam tubers to grow into the shape within the trough. Opening the trough walls with the hinges facilitates the removal of the yam tubers and also makes peeling easier when consuming them.

[0037] The present invention also has the following advantages:

[0038] 1) Achieve mechanized operations, saving labor and reducing costs.

[0039] Using machinery for trenching and backfilling reduces labor intensity and labor costs;

[0040] 2) Increase production

[0041] Using yam tuber growing troughs for planting allows the yam tubers to grow within the space of the trough, completely eliminating the soil resistance that would otherwise hinder the elongation and enlargement of the yam tubers, which can increase yield by about 20%.

[0042] Using yam tuber growing troughs changes the growth direction of yam tubers from vertical to inclined, ensuring that the tubers always grow in the soil layer 20-60cm below the ground. The soil temperature in this layer is exactly the optimal temperature for yam tuber elongation and enlargement, 24℃-26℃. Yam tubers grow in shallow soil with relatively large temperature differences between day and night, which makes cell division more active and can increase yam yield by more than 10%.

[0043] When planting yam tubers in growth troughs, the row spacing and plant spacing can be optimized to between 0.6 and 1 meter according to the needs of plant growth. In contrast, for shallow growth troughs and box-type planting, the row spacing can only be set between 1.4 and 1.7 meters. The former significantly increases land utilization and can increase yield by more than 40% compared to the latter.

[0044] 3) Can improve product quality

[0045] Using yam tuber growing troughs ensures that the yam tubers grow in a relatively enclosed space, without contact with the soil. This results in yam skin free of viral spots and insect damage, a whiter and more tender color, smoother and straighter tubers, and larger tubers. The hollow environment of the tubers promotes respiration and photosynthesis, increasing the nutritional content and improving the quality of the yam. While the disease rate from fruit contact with soil during yam growth is 30%–100%, using these growing troughs reduces the disease rate to 10%–15%. This significantly reduces pesticide use, resulting in lower pesticide residues and a more environmentally friendly approach.

[0046] 4) No restrictions on yam varieties

[0047] This yam tuber growth trough can be used to grow yams, and there are no restrictions on the variety, as long as it is a long yam variety.

[0048] 5) Low requirements for the land used for planting yams

[0049] This yam tuber growing trough can be used for planting in sandy, clayey, or even gravelly soil. It also lowers the requirements for soil thickness and groundwater level, requiring only a soil thickness of 50cm or more and a groundwater level of 80cm or less.

[0050] 6) High-quality goods, high market price

[0051] Yams grown using this yam tuber growth trough have a whiter, more tender skin, are free of virus spots and insect damage, have fewer branching tubers, are smooth and straight, and are larger in size. During harvest, the yams are removed along with the growth trough, which provides excellent protection for the yams, resulting in almost zero damage and fewer defective products.

[0052] 7) Resist continuous cropping and shorten the continuous cropping cycle

[0053] Yam plants cannot tolerate continuous cropping; the continuous cropping cycle is generally over 10 years. Some farmers invest over 4,000 yuan per mu per year in filling with vermiculite to shorten the continuous cropping cycle. Because this invention provides the yam tubers with an environment isolated from the soil, the continuous cropping cycle can be shortened to 3-5 years.

[0054] 8) No ditch collapse

[0055] The yam tuber growth trough in this invention serves as a filler in the trench, preventing the trench from collapsing.

[0056] 9) Scientific and reasonable design

[0057] Because the yam tuber growth trough of this invention is buried in the soil during use, it avoids exposure to ultraviolet rays from the sun, resulting in slower weathering and a longer service life. The row spacing and plant spacing can be adjusted according to the needs of plant growth to achieve reasonable dense planting (the required row spacing is determined by the width of the trench, and the plant spacing is determined by the angle between the side of the growth trough end and the length of the growth trough; the smaller the angle, the larger the plant spacing, and vice versa; the plant spacing determines the angle).

[0058] 10) Reduce expenses, increase output and prices, and increase farmers' income;

[0059] 11) There are two additional expenses compared to cultivation methods such as ridge cultivation, hole cultivation, and trench cultivation:

[0060] (1) Cost of purchasing a soilless directional growth trough. However, the savings and increased revenue from using the growth trough for one to two years can recover the investment, and it is a one-time investment with benefits for many years;

[0061] (2) Installation costs.

[0062] This invention allows yam tubers to be separated from the soil, reducing soil-borne diseases, lowering growth resistance, promoting tuber growth in shallow soil, increasing planting density, preventing trenching, improving yam quality and yield, overcoming land use limitations, expanding planting area, maximizing mechanized trenching and hilling, and simplifying harvesting, thus effectively increasing farmers' income.

Claims

1. A combined yam tuber growth trough installed in a ditch, characterized in that: The yam tuber growth trough includes an assembly part, a space part, and a top cover or base. The assembly part is located at the upper and lower ends of the growth trough. The assembly part assembles the upper and lower yam growth troughs. After two or more growth troughs are combined, they form one or more yam tuber growth spaces set in the trench. The upper or lower part of the assembled growth trough is provided with a top cover or base. The yam tuber growth trough is a plastic material component. Each growth trough has an opening at both ends. The upper edge of the upper opening is parallel to the ground where the trench is located, and the lower edge of the lower opening is parallel to the bottom surface of the trench. One or more rows of assembled yam tuber growth troughs are placed in a trench. The length direction of the growth trough forms an angle with the ground.

2. The combined yam tuber growth trough set in a ditch according to claim 1, characterized in that: The bottom and two side walls of the yam tuber growth trough are either fixedly connected or hinged. The hinged connection includes a single-sided hinge connection and a double-sided hinge connection.

3. A combined yam tuber growth trough set in a ditch according to claim 1, characterized in that: The cross-section of the space portion after the yam tuber growth trough is assembled is polygonal, circular, or elliptical.

4. A combined yam tuber growth trough set in a ditch according to claim 1, characterized in that: The growth groove assembly methods include mortise and tenon structure, snap-fit ​​structure, binding structure, push-pull structure, plug-in structure, and guide rail structure.

5. A combined yam tuber growth trough set in a ditch according to claim 1, characterized in that: The angle between the upper edge of the opening parallel to the ground of the ditch and the length direction of the yam tuber growth trough is between 10° and 90°, and the ends of multiple stacked yam tuber growth troughs have the same angle with their length direction.

6. A combined yam tuber growth trough set in a ditch according to claim 1, characterized in that: The length of the yam tuber growth trough is 0.3-2.5m, the width is 2-30cm, the height is 2-25cm, and the thickness is 0.2-5mm.

7. A combined yam tuber growth trough set in a ditch according to claim 5, characterized in that: The angle between the side parallel to the trench and the length direction of the growth trough is optimized to be between 10° and 60°.

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