CN115067282A - Water demand automatic adjustment earthworm transportation method and device - Google Patents
Water demand automatic adjustment earthworm transportation method and device Download PDFInfo
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- CN115067282A CN115067282A CN202210752685.XA CN202210752685A CN115067282A CN 115067282 A CN115067282 A CN 115067282A CN 202210752685 A CN202210752685 A CN 202210752685A CN 115067282 A CN115067282 A CN 115067282A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New breeds of animals
- A01K67/033—Rearing or breeding invertebrates; New breeds of invertebrates
- A01K67/0332—Earthworms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
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Abstract
The invention discloses a method and a device for transporting earthworms with automatically adjusted water demand. The earthworm transportation method comprises the following steps: putting the carrier base material and the guangdong earthworms into a guangdong earthworm transportation device, controlling the water content of the carrier base material in the guangdong earthworm transportation device to be 15-30%, and transporting the guangdong earthworms to a destination; the carrier base comprises the following components: rice soil, river sand and clothes base material. According to the earthworm transportation method, the survival rate of the earthworms is improved in the transportation process by controlling the water content of the carrier base material and adopting the special carrier base material, and the survival rate of 100% can be realized at most after 24 hours of transportation; in addition, the water loss phenomenon of the Pheretima aspergillum can be reduced, and the Pheretima aspergillum can be transported for 24h without losing weight, thereby providing guarantee for artificial breeding of Pheretima aspergillum.
Description
Technical Field
The invention belongs to the technical field of cultivation, and particularly relates to a method and a device for transporting earthworms with automatically adjusted water demand.
Background
The Guangdong earthworms are the mainstream variety in the earthworm medicine market, and are large, long in body and good in quality due to the unique hydrothermal survival conditions in south China, and are one of authentic medicinal materials in south Ling. The earthworms are generally divided into three types due to different habits and feeding habits, the earthworms of different types have obvious difference in physiological structure and metabolic capability, the earthworms belong to typical deep-dwelling earthworms, the requirement on the living environment is strict, and the earthworms live on the upper layer and feed on the lower layer generate special soil macroporous structures, have unique intestinal systems and influence the absorption and utilization of protein and fat, so that unique intestinal microorganism diversity is formed.
The guangdong earthworms are mainly produced in Guangdong and Guangxi areas, are hot in summer, have unstable survival rate under the long-distance high-temperature transportation condition, often cause large-area suffocation death due to environmental factors in transportation, and bring loss to farmers. The moisture content is a key factor influencing the survival rate of earthworms, and different from other types of earthworms, as the earthworms have large seedlings and the water content needs to be controlled at a higher level, in some previous earthworm transportation modes, woven bags are usually adopted, so that the earthworms are suffocated and die due to insufficient oxygen, and escape of the earthworms is caused to influence the cargo space environment; the transportation carrier has materials such as fermented base material, earthworm cast, expanded perlite, sponge, generally is 6-8 times of earthworm weight, but in the transportation, uses earthworm cast, expanded perlite, sponge as the carrier, and the earthworm loses water and loses weight easily, and in addition, the mode of control moisture in the present earthworm transportation is mostly the addition formula, and the above adds when discovering that water is few, hardly in time supplies with, because add many times simultaneously, causes following moisture to increase, the oxygen reduction appears, the earthworm large tracts of land phenomenon of death.
Disclosure of Invention
The invention aims to solve the problems of low survival rate and easy water loss of the lumbricus in the transportation process in the prior art, and the invention aims to provide a method for transporting the lumbricus and a second aim to provide a device for transporting the lumbricus.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a method for transporting lumbricus, which comprises the following steps:
putting the carrier base material and the guangdong earthworms into a guangdong earthworm transportation device, controlling the water content of the carrier base material in the guangdong earthworm transportation device to be 15-30%, and transporting the guangdong earthworms to a destination;
the carrier base comprises the following components: rice soil, river sand and clothes base material.
The water content of the carrier base in the present invention means the mass of water contained in the carrier base per unit mass.
Preferably, in the transporting method of the guangdong earthworms, the water content of the carrier base material in the guangdong earthworms transporting device is controlled to be 20-25%; within the water content range, the mortality rate and dehydration rate of the lumbricus in the transportation process can be further reduced.
Preferably, in the earthworm transportation method, the carrier base material comprises the following components in percentage by mass: 40-70% of paddy soil, 10-40% of river sand and 5-40% of clothing base material; further preferably, the carrier base material comprises the following components in percentage by mass: 50-60% of paddy soil, 20-30% of river sand and 10-30% of clothing base material; still further preferably, the carrier base material comprises the following components in percentage by mass: 50-60% of paddy soil, 20-30% of river sand and 20% of clothing base material; under the same water content condition, the components of the carrier base material are controlled to further reduce the mortality rate and dehydration rate of the lumbricus in the transportation process.
Preferably, in the method for transporting Pheretima aspergillum, the carrier base material has a volume weight of 1.0-1.6g/cm 3 (ii) a It is further preferred that the bulk weight of the carrier base is from 1.1 to 1.5g/cm 3 (ii) a Still further preferably, the bulk weight of the carrier base is from 1.2 to 1.4g/cm 3 (ii) a Further preferred isThe volume weight of the carrier base is 1.3g/cm 3 。
Preferably, in the method for transporting the Guangdong earthworms, the paddy soil is red soil artificially formed under the influence of perennial rice planting, farming, fertilizing and irrigating, the area distribution is wide, and the surface layer of the soil with the thickness of 20cm is taken and dried to obtain the paddy soil used by the method.
Preferably, in the earthworm transporting method, the grain diameter of the river sand is 0.15-0.45 mm; further preferably, the particle size of the river sand is 0.2-0.4 mm; still further preferably, the river sand has a particle size of 0.25-0.35 mm; the river sand is fine sand around the river, and the river sand in the particle size range has good water and air permeability.
Preferably, in the transporting method of the guangdong earthworms, the clothing base material is smashed into pieces of 0.5-4cm by a blender; the clothes base material in the range can maintain good air permeability and water permeability of the carrier base material; the clothes base material can be waste clothes and cloth, the waste clothes and cloth can be clothes in spring, summer, autumn and winter, and the clothes and cloth are crushed into fragments by a crusher, and the clothes and cloth comprise but are not limited to various soft fibers, chemical fibers, hemp and other materials; the implementation of the invention is not limited by the specific material of the clothes base material.
The second aspect of the present invention provides a earthworm transportation device for implementing the earthworm transportation method, comprising:
a cultivation box; the bottom of the culture box is provided with a negative pressure percolation pipe;
a water storage tank; the water storage tank is arranged on the outer side surface of the culture tank, and the top of the water storage tank is provided with a water filling port; the inside of the water storage tank is communicated with a negative pressure percolation pipe;
a negative pressure device; the negative pressure device comprises a first negative pressure pipe, a second negative pressure pipe and a third negative pressure pipe; the first negative pressure pipe is arranged on the outer side surface of the water storage tank; the second negative pressure pipe is arranged in the first negative pressure pipe, and the top of the second negative pressure pipe extends out of the first negative pressure pipe; one end of the third negative pressure pipe is connected with the top of the first negative pressure pipe, and the other end of the third negative pressure pipe extends into the water storage tank.
Preferably, in the wide earthworm transportation device, the negative pressure infiltration pipes are distributed at the bottom of the culture box in a circular ring shape.
Preferably, in the earthworm transportation device, the bottom of the third negative pressure pipe is on the same level with the negative pressure percolation pipe.
In the earthworm transporting device, a carrier base material is paved in a breeding box, earthworms are placed, the initial water content of the carrier base material is adjusted, water is added into a water storage tank through a water filling port, the bottom of a third negative pressure pipe and a water inlet of a negative pressure percolation pipe are kept on the same horizontal plane in the initial state, water is added into a first negative pressure pipe, the upper part of the first negative pressure pipe is negative pressure, a second negative pressure pipe is communicated with the atmospheric environment, the bottom of the second negative pressure pipe is kept at atmospheric pressure, the horizontal plane pressure of the negative pressure percolation pipe and the bottom of the third negative pressure pipe is kept the same in the initial state, when the water content in the breeding box is reduced, the water potential is reduced, the water in the water storage tank is driven to enter the negative pressure percolation pipe through the water inlet of the negative pressure percolation pipe so as to enter and be supplied into the whole breeding box, when the water content of the breeding box reaches the water content in the initial state, the pressure of the third negative pressure pipe in the water storage box is the same as that in the base material, the moisture will not flow through the pressure, maintaining a constant moisture content.
The invention has the beneficial effects that:
according to the earthworm transportation method, the survival rate of the earthworms is improved in the transportation process by controlling the water content of the carrier base material and adopting the special carrier base material, and the survival rate of 100% can be realized at most after 24 hours of transportation; in addition, the water loss phenomenon of the Pheretima aspergillum can be reduced, and the Pheretima aspergillum can be transported for 24h without losing weight, thereby providing guarantee for artificial breeding of Pheretima aspergillum.
The earthworm transportation device can realize automatic adjustment of the water content of the carrier base material in the earthworm transportation process, the earthworms are normal in activity and posture during transportation by the device, the transportation cost and efficiency of farmers are saved, and the technical development of rapid and efficient artificial cultivation and cultivation of the earthworms is promoted.
Drawings
Fig. 1 is a schematic view of a earthworm transportation device according to an embodiment.
Fig. 2 is a schematic top view of the earthworm transportation device according to the embodiment.
Fig. 3 is a schematic view of the negative pressure infiltration pipe of the earthworm transportation device according to the embodiment.
Figures 1-3 are numbered:
100-a culture box, 110-a negative pressure percolation pipe, 200-a water storage tank, 210-a water filling port, 300-a negative pressure device, 310-a first negative pressure pipe, 320-a second negative pressure pipe and 330-a third negative pressure pipe.
Detailed Description
The embodiments of the present invention will be described in detail below, and the embodiments described by referring to the drawings are exemplary only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
The present invention will be described in further detail with reference to specific examples.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be directly connected to each other, indirectly connected to each other through an intermediate member, or connected to each other through the inside of two members. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The starting materials, reagents or equipment used in the examples are, unless otherwise specified, either conventionally commercially available or may be obtained by methods known in the art. Unless otherwise indicated, the testing or testing methods are conventional in the art.
As shown in fig. 1-2, the earthworm transportation device comprises a breeding tank 100, a water storage tank 200 and a negative pressure device 300; the cultivation box 100 comprises a negative pressure percolation pipe 110, the water storage tank 200 comprises a water filling port 210, and the negative pressure device 300 comprises a first negative pressure pipe 310, a second negative pressure pipe 320 and a third negative pressure pipe 330.
As shown in FIGS. 1-3, in some embodiments of the present invention, a carrier base material is laid in the cultivation box 100 and earthworms are added, the initial water content of the carrier base material is adjusted, water is added into the water storage box 200 through the water inlet 210, the bottom of the third negative pressure pipe 330 is maintained at the same level as the water inlet of the negative pressure percolation pipe 110 in an initial state, water is added into the first negative pressure pipe 310, the upper part is negative pressure, the second negative pressure pipe 320 is connected to the atmosphere, the bottom of the second negative pressure pipe 320 is maintained at the atmospheric pressure, the pressure at the bottom of the negative pressure percolation pipe 110 is maintained at the same level as the pressure at the bottom of the third negative pressure pipe 330 in the initial state, when the water content in the cultivation box 100 decreases, the water potential decreases, the water in the water storage box 200 is driven to enter the negative pressure percolation pipe 110 through the water inlet of the negative pressure percolation pipe 110, the negative pressure percolation pipe 110 enters the whole cultivation box 100 through the suction action of the substrate capillary, when the moisture content of the cultivation box 100 reaches the moisture content of the initial state, the pressure of the third negative pressure pipe 330 in the water storage tank 200 is the same as that of the base material, and the moisture will not flow through the pressure, thereby maintaining the moisture content constant.
In some embodiments of the present invention, a water content detecting device is disposed in the cultivation box 100 for real-time monitoring of the water content in the cultivation box 100.
The earthworms used in the following examples are derived from a earthworm cultivation base in Guangzhou, Guangdong province.
Fig. 1-2 show a guangdong transportation device used in the following embodiments 1-8, wherein a water storage tank 200 of the guangdong transportation device is made of transparent organic glass material, so that the transportation and observation are convenient, and the size of the water storage tank 200 is as follows: the length is 20cm, the width is 10cm, and the height is 20 cm; breed case 100 and adopt the PVC material to make, breed the size of case 100 and do: 60cm long, 50cm wide and 40cm high.
Example 1
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 50% of paddy soil, 30% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 15%; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 2
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 50% of paddy soil, 30% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 20%; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 3
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 50% of paddy soil, 30% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 25%; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 4
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 50% of paddy soil, 30% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 30%; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 5
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 60% of paddy soil, 20% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 15%; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 6
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 60% of paddy soil, 20% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 20%; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 7
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 60% of rice soil, 20% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 25%; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 8
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 60% of paddy soil, 20% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 30%; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
The following examples 9-16 employ a homemade breeding box made of PVC material, the dimensions of which are: 60cm long, 50cm wide and 40cm high. Adopt manual mode of adding water, specifically do: according to the water content measured by a soil humidity monitoring instrument on the device, when the water content is lower than an initial set value, water is slowly added to the initial state value, and then the water addition is stopped.
Example 9
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 50% of paddy soil, 30% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 15%; manually adjusting the water quantity; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 10
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 50% of paddy soil, 30% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 20%; manually adjusting the water quantity; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 11
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 50% of paddy soil, 30% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 25%; manually adjusting the water quantity; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 12
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 50% of paddy soil, 30% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 30%; manually adjusting the water quantity; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 13
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 60% of paddy soil, 20% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 15%; manually adjusting the water quantity; adding 100 pieces of health Lumbricus of high activity into carrier matrix, wherein the initial weight of each piece of Lumbricus is 0.8-20 g.
Example 14
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 60% of paddy soil, 20% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 20%; manually adjusting the water quantity; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 15
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 60% of paddy soil, 20% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 25%; manually adjusting the water quantity; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
Example 16
In the embodiment, carrier base materials are paved in the cultivation box, wherein the carrier base materials comprise 60% of rice soil, 20% of river sand and 20% of waste clothes base materials, and the water content is controlled to be 30%; manually adjusting the water quantity; adding 100 pieces of health Lumbricus kwangsiensis with high activity into carrier base material, wherein the initial weight of each piece of Lumbricus kwangsiensis is 0.8-20 g.
The above embodiments are all provided with 3 parallel groups, 100 healthy earthworms with high activity are selected from each group and put into a transportation device, and the transportation device is put into a truck. The earthworms in the transportation device are sampled every 2 hours, all the earthworms are taken out, the number and the weight are weighed, the average value is calculated, the average value is compared with the data which are put into the cultivation box for the first time, the number and the weight change of the earthworms are analyzed, the number change is shown in the following table 1, and the weight change is shown in the following table 2.
TABLE 1 average survival number of Pheretima aspergillum of the different examples
TABLE 2 average weights of Pheretima aspergillum of the various examples
As can be seen from Table 1, under the conditions of different substrate proportions, the examples 2-3 and examples 6-7 have the best effect, the survival rate reaches 100%, and the water content is better between 20 and 25%; when the water content is 15%, the proportion of the paddy soil is 50%, the river sand is 30% and the proportion of the waste clothes base material is 20% is the best.
As shown in Table 1, in examples 1-8, after 24 hours of transportation, the number of earthworms is reduced by 0-15 earthworms, while in examples 9-16, the number of earthworms is reduced by 45-90 earthworms by adopting a common watering mode, and the survival rate of the earthworm transportation device is improved by 45-81% and the highest survival rate is improved by 81%.
As shown in Table 2, in examples 1 to 8, the weight reduction range of Pheretima aspergillum is 0 to 175.92g, while in examples 9 to 16, the weight reduction range of Pheretima aspergillum is 364.5 to 910.08g by conventional watering method.
The above detailed description of the preferred embodiments of the present invention is not intended to limit the present invention, and any modification, replacement, or improvement made on the basis of the technical idea of the present invention should be included in the scope of the present invention.
Claims (10)
1. The earthworm transportation method is characterized by comprising the following steps:
putting the carrier base material and the guangdong earthworms into a guangdong earthworm transportation device, controlling the water content of the carrier base material in the guangdong earthworm transportation device to be 15-30%, and transporting the guangdong earthworms to a destination;
the carrier base comprises the following components: rice soil, river sand and clothes base material.
2. The guang earthworm transportation method of claim 1, wherein the water content of the carrier base material in the cultivation tank is controlled to be 20-25%.
3. The guang earthworm transportation method according to claim 1, wherein the carrier base material comprises the following components in percentage by mass: 40-70% of rice soil, 10-40% of river sand and 5-40% of clothing base material.
4. The guang earthworm transportation method according to claim 3, wherein the carrier base material comprises the following components in percentage by mass: 50-60% of paddy soil, 20-30% of river sand and 10-30% of clothing base material.
5. The guang earthworm transportation method according to claim 4, wherein the carrier base material comprises the following components in percentage by mass: 50-60% of paddy soil, 20-30% of river sand and 20% of clothing base material.
6. The guang earthworm transportation method of claim 1, wherein the bulk density of the carrier base is 1.0-1.6g/cm 3 。
7. The guang earthworm transportation method according to claim 1, wherein the river sand has a particle size of 0.15-0.45 mm.
8. A earthworm transportation device for implementing the earthworm transportation method according to any one of claims 1 to 7, comprising:
a breeding box; the bottom of the culture box is provided with a negative pressure percolation pipe;
a water storage tank; the water storage tank is arranged on the outer side surface of the breeding tank, and a water filling port is formed in the top of the water storage tank; the inside of the water storage tank is communicated with the negative pressure percolation pipe;
a negative pressure device; the negative pressure device comprises a first negative pressure pipe, a second negative pressure pipe and a third negative pressure pipe; the first negative pressure pipe is arranged on the outer side surface of the water storage tank; the second negative pressure pipe is arranged in the first negative pressure pipe, and the top of the second negative pressure pipe extends out of the first negative pressure pipe; one end of the third negative pressure pipe is connected with the top of the first negative pressure pipe, and the other end of the third negative pressure pipe extends into the water storage tank.
9. The guang earthworm transport device of claim 8, wherein the negative pressure infiltration pipes are distributed in a ring shape at the bottom of the cultivation box.
10. The guang earthworm transport device of claim 9, wherein the bottom of the third negative pressure pipe is at the same level as the negative pressure percolation pipe.
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| CN116145763A (en) * | 2022-11-25 | 2023-05-23 | 广东省科学院生态环境与土壤研究所 | Roof greening-based rainwater collecting and recycling system and control method thereof |
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