CN111418329A - Fertilizer injection unit is planted to crops - Google Patents
Fertilizer injection unit is planted to crops Download PDFInfo
- Publication number
- CN111418329A CN111418329A CN202010346380.XA CN202010346380A CN111418329A CN 111418329 A CN111418329 A CN 111418329A CN 202010346380 A CN202010346380 A CN 202010346380A CN 111418329 A CN111418329 A CN 111418329A
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- China
- Prior art keywords
- fertilizer
- displacement detector
- filtering net
- communicated
- crop planting
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/047—Spraying of liquid fertilisers
Abstract
According to the crop planting and fertilizing device, a drill bit is subjected to resistance from soil when drilling into the soil, a pressure sensor between a connecting rod and a fixing rod can detect the resistance and transmit data to a control chip, after a hydraulic telescopic rod is completely extended out, the control chip controls the output power of a booster pump according to the resistance detected by the pressure sensor, the output power of the booster pump is in direct proportion to the resistance detected by the pressure sensor, namely the resistance detected by the pressure sensor is large, the output power of the booster pump is increased along with the increase of the resistance, so that the flow velocity of liquid fertilizer sprayed by a spray head is increased, and the diffusion speed and the diffusion area of the liquid fertilizer can be increased within a certain time. Prevent the uneven spraying caused by the uniform spraying of the spray head.
Description
Technical Field
The invention belongs to the technical field of agricultural instruments, and particularly relates to a crop planting and fertilizing device.
Background
When the soil is not provided with the nutrients required for the growth and development of crops, the act of artificially supplementing the crops with nutrient elements is called fertilization, which must be performed in consideration of the soil because: firstly, only when soil is insufficient to supply certain nutrient, the fertilizer is required to be applied, all necessary elements are not required to be applied to the soil, the seedling needs to be applied in the seedling period in the planting process to ensure the survival rate of the seedling, the common fertilizer applying device applies the fertilizer by spraying the fertilizer in the fertilizer applying process, the fertilizer applying effect is poor, and the fertilizer applying amount is difficult to control according to the soil environment.
Disclosure of Invention
1. Technical problem to be solved by the invention
The invention aims to solve the problems that the prior fertilizing device has poor fertilizing effect and is difficult to control the fertilizing amount according to the soil environment.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a crop planting and fertilizing device, which comprises a bracket and a fertilizer storage bin arranged on the bracket, wherein liquid fertilizer is stored in the fertilizer storage bin, the bottom of the fertilizer storage bin is communicated with a liquid guide pipe, a filter screen is arranged between the fertilizer storage bin and the liquid guide pipe, a flow meter is arranged in the liquid guide pipe, the liquid guide pipe is communicated with a liquid conveying pipe, the liquid conveying pipe is communicated with a telescopic fertilizing mechanism, the telescopic fertilizing mechanism comprises a hydraulic telescopic rod, the hydraulic telescopic rod is connected with a connecting rod, a cavity is arranged in the connecting rod and is communicated with the liquid conveying pipe, a shell is sleeved outside the connecting rod, a plurality of spray heads are arranged on the shell and are communicated with the cavity in the connecting rod, one end of the connecting rod, far away from the hydraulic telescopic rod, is connected with a fixed rod, a pressure sensor is, the wheel is arranged on the support, the wheel is in rolling connection with the support through a rolling shaft, a circle number counter is arranged on the wheel, a first displacement detector and a second displacement detector are arranged at the bottom of the support and face downwards, the first displacement detector and the second displacement detector are arranged on the two sides of the support respectively, the distance between the first displacement detector and the second displacement detector and the adjacent wheel is 10-15 cm, a control box is further arranged on the support, a storage battery and a control chip are arranged in the control box, the storage battery and the control chip are electrically connected, and the control chip is electrically connected with the circle number counter, the first displacement detector, the second displacement detector, a pressure sensor and a flow meter respectively.
Preferably, the filter screen is arranged into an upper layer and a lower layer, and the filter holes of the filter screen are arranged in a staggered manner.
Preferably, the filter screens are arranged into an upper layer, a middle layer and a lower layer, and the filter holes of the filter screens are arranged in a staggered mode.
Preferably, the shape of the filtering holes of the filtering net is pentagonal or hexagonal.
Preferably, the diameter of the filtering holes of the filtering net is smaller than the distance between the upper and lower layers of the filtering net.
Preferably, the diameter of the filtering holes of the filtering net is smaller than the distance between the upper layer of the filtering net and the middle layer of the filtering net, and the distance between the upper layer of the filtering net, the middle layer of the filtering net and the lower layer of the filtering net is larger than the diameter of the filtering holes.
Preferably, the bracket is also provided with a booster pump, and a booster pipe of the booster pump is communicated with the infusion pipe.
Preferably, be equipped with the (mixing) shaft in the storage fertile storehouse, storage fertile storehouse top is equipped with the opening, the (mixing) shaft passes the opening and is connected with the agitator motor at storage fertile storehouse top, the (mixing) shaft passes through sealed bearing with the opening and is connected.
Preferably, the stirring shaft is connected with a plurality of stirring rods, and the surfaces of the stirring rods are provided with the reticular coatings.
Preferably, a plurality of ultrasonic vibrators are arranged in the fertilizer storage bin.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the crop planting and fertilizing device of the invention utilizes the hydraulic cylinder to provide power to enable the hydraulic telescopic rod to extend downwards, the hydraulic telescopic rod extends downwards to drive the connecting rod, the fixed rod and the drill bit to synchronously move downwards, in the moving process, as the drill bit is subjected to resistance from the soil when drilling into the soil, the pressure sensor between the connecting rod and the fixed rod detects the resistance and transmits data to the control chip, when the hydraulic telescopic rod is fully extended out, the control chip controls the output power of the booster pump according to the resistance detected by the pressure sensor, the output power of the booster pump is in direct proportion to the resistance detected by the pressure sensor, that is, the resistance detected by the pressure sensor is large, the output power of the booster pump is increased along with the resistance, so that the flow speed of the liquid fertilizer sprayed by the spray head is increased, and the diffusion speed and the diffusion area of the liquid fertilizer can be increased within a certain time. Prevent because the shower nozzle sprays at the uniform velocity that causes spray inhomogeneous, because the soil property along with soil is different, and the hardness is different, and soil is different to shower nozzle spun liquid fertilizer's resistance, and is different to liquid fertilizer's diffusion velocity, consequently, when the condition that needs soil property is hard, the speed of flow that sprays that needs to increase the shower nozzle just can satisfy the fertilization demand with spraying pressure.
Drawings
FIG. 1 is a schematic structural view of a crop planting and fertilizing apparatus of the present invention;
fig. 2 is a schematic structural diagram of a filter screen of the crop planting and fertilizing device.
The reference numerals in the schematic drawings illustrate:
110. a support; 111. a first displacement detector; 112. a second displacement detector; 120. a wheel; 121. a number of turns counter; 130. storing fertilizer in a fertilizer bin; 131. a stirring shaft; 132. a stirring motor; 134. a stirring rod; 135. an ultrasonic vibrator; 136. a filter screen; 140. a catheter; 141. a flow meter; 142. a transfusion tube; 150. a booster pump; 151. a pressure increasing pipe; 160. a control box; 170. a telescopic fertilizing mechanism; 171. a hydraulic chamber; 172. a hydraulic telescopic rod; 173. a connecting rod; 174. a housing; 176. a pressure sensor; 177. a drill bit; 178. fixing the rod; 179. and (4) a spray head.
Detailed Description
In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1-2, the crop planting and fertilizing apparatus of the embodiment includes a support 110 and a fertilizer storage bin 130 disposed on the support 110, the fertilizer storage bin 130 stores liquid fertilizer, the bottom of the fertilizer storage bin 130 is communicated with a liquid guide tube 140, a filter screen 136 is disposed between the fertilizer storage bin 130 and the liquid guide tube 140, a flow meter 141 is disposed in the liquid guide tube 140, the liquid guide tube 140 is communicated with a liquid guide tube 142, the liquid guide tube 142 is communicated with a telescopic fertilizing mechanism 170, the telescopic fertilizing mechanism 170 includes a hydraulic telescopic rod 172, the hydraulic telescopic rod 172 is communicated with a hydraulic cylinder 171, the hydraulic cylinder 171 is fixed on the support 110, the hydraulic telescopic rod 172 is connected with a connecting rod 173, a cavity disposed inside the connecting rod 173 is communicated with the liquid guide tube 142, a housing 174 is sleeved outside the connecting rod 173, a plurality of spray nozzles 179 are disposed on the housing 174 and are communicated, one end, far away from the hydraulic telescopic rod 172, of the connecting rod 173 is connected with a fixing rod 178, a pressure sensor 176 is arranged between the fixing rod 178 and the shell 174, one end, far away from the hydraulic telescopic rod 172, of the fixing rod 178 is provided with a drill 177, the support 110 is provided with a wheel 120, the wheel 120 is in rolling connection with the support 110 through a rolling shaft, a turn number counter 121 is arranged on the wheel 120, a first downward displacement detector 111 and a second downward displacement detector 112 are further arranged at the bottom of the support 110, the first displacement detector 111 and the second displacement detector 112 are respectively arranged on two sides of the support 110, the distance between the first displacement detector 111 and the second displacement detector 112 and the adjacent wheel is 10-15 cm, a control box 160 is further arranged on the support 110, a storage battery and a control chip are arranged in the control box 160 and electrically connected with the storage battery and the control chip, and the, The first displacement detector 111, the second displacement detector 112, the pressure sensor 176 and the flowmeter 141 are electrically connected. The bracket 110 is further provided with a booster pump 150, and a booster pipe 151 of the booster pump 150 is communicated with the infusion tube 142. The control chip is electrically connected with the booster pump 150. In the embodiment, the hydraulic cylinder 171 provides power to make the hydraulic telescopic rod 172 extend downwards, the hydraulic telescopic rod 172 extends downwards to drive the connecting rod 173, the fixing rod 178 and the drill 177 to synchronously move downwards, during the movement, since the drill 177 penetrating into the soil is subjected to resistance from the soil, the pressure sensor 176 between the connecting rod 173 and the fixing rod 178 detects the resistance and transmits the data to the control chip, when the hydraulic telescopic rod 172 is fully extended, the control chip controls the output power of the booster pump 150 according to the resistance detected by the pressure sensor 176, the output power of the booster pump 150 is in direct proportion to the resistance detected by the pressure sensor 176, i.e., the resistance detected by the pressure sensor 176, is large, the output power of the booster pump 150 increases accordingly, the flow rate of the liquid fertilizer sprayed by the spray head 179 is increased, and the speed and the area of the liquid fertilizer spread in a certain time are increased. Prevent because the shower nozzle 179 sprays at the uniform velocity that causes sprays inhomogeneous, because the soil property along with soil is different, and the hardness is different, and soil is different to shower nozzle 179 spun liquid fertilizer's resistance, and is different to liquid fertilizer's diffusion velocity, consequently, when the condition that needs soil hardness, the speed of flow and the spray pressure that spray that need increase shower nozzle 179 can only satisfy the fertilization demand.
The embodiment also detects the moving distance of the devices through the first displacement detector 111 and the second displacement detector 112, then the number of rolling circles of the wheel 120 is counted by the circle number counter 121, the rolling distance of the wheel 120 is obtained by calculating the diameter and the number of the circles of the wheel 120, the moving distance of the devices through the first displacement detector 111 and the second displacement detector 112 and the rolling distance of the wheel 120 obtained by calculating the diameter and the number of the circles of the wheel 120 are compared and averaged to obtain the fertilization distance, meanwhile, the flowmeter 141 performs automatic flow calculation on the fertilization amount to obtain the total fertilization amount and the average fertilization amount, so that whether the fertilization amount meets the requirement or not is judged, and the fertilization amount is detected and controlled to enable the plant to grow well.
The filter screen 136 of this embodiment is provided as an upper layer and a lower layer, and the filter holes of the upper and lower layers of filter screen 136 are arranged in a staggered manner. The filtering holes of the filtering net 136 are pentagonal. The diameter of the filtering holes of the filtering net 136 is smaller than the distance between the upper and lower layers of the filtering net 136. When puddler 134 and ultrasonic vibrator 135 in the fertile storehouse 130 of storage stir liquid fertilizer, the liquid fertilizer in the fertile storehouse 130 of storage can produce the foam, make liquid fertilizer flowmeter 141 detection data inaccurate when through flowmeter 141, at this moment, upper and lower two-layer filter screen 136 is when carrying out filterable to liquid fertilizer, the filtration pore of crisscross setting makes the filtration pore be difficult to produce the foam, and the foam can become the big bubble with the foam because the surface tension of foam when filtering the pore, it can make the downthehole production arch of filtration puncture big bubble for the pentagon to filter the pore shape. The diameter of the filtering holes of the filtering net 136 is smaller than the distance between the upper filtering net 136 and the lower filtering net 136, so that the diameter of the large bubbles can be broken by the adjacent filtering net 136 when expanding to the distance between the upper filtering net 136 and the lower filtering net 136, the generation of foam and bubbles is further reduced, the detection accuracy of the flowmeter 141 is improved, and the detection accuracy of the fertilizing amount is ensured.
Be equipped with (mixing) shaft 131 in the storage fertile storehouse 130, storage fertile storehouse 130 top is equipped with the opening, and (mixing) shaft 131 passes the opening and is connected with the agitator motor 132 at storage fertile storehouse 130 top, and (mixing) shaft 131 passes through sealed bearing with the opening and is connected. The stirring shaft 131 is connected with a plurality of stirring rods 134, and the surfaces of the stirring rods 134 are provided with a mesh coating. A plurality of ultrasonic vibrators 135 are arranged in the fertilizer storage bin 130.
Example 2
The device comprises a support 110 and a fertilizer storage bin 130 arranged on the support 110, liquid fertilizer is stored in the fertilizer storage bin 130, a liquid guide pipe 140 is communicated with the bottom of the fertilizer storage bin 130, a filter screen 136 is arranged between the fertilizer storage bin 130 and the liquid guide pipe 140, a flow meter 141 is arranged in the liquid guide pipe 140, the liquid guide pipe 140 is communicated with a liquid conveying pipe 142, the liquid conveying pipe 142 is communicated with a first spray head 143 and a second spray head 144, wheels 120 are arranged on the support 110, the wheels 120 are in rolling connection with the support 110 through rolling shafts, a turn number counter 121 is arranged on the wheels 120, a first downward displacement detector 111 and a second displacement detector 112 are further arranged at the bottom of the support 110, the first displacement detector 111 and the second displacement detector 112 are respectively arranged on two sides of the support 110, the distance between the first displacement detector 111 and the second displacement detector 112 and adjacent wheels is 10-15 cm, a control box, the storage battery is electrically connected with the control chip, and the control chip is respectively electrically connected with the turn number counter 121, the first displacement detector 111, the second displacement detector 112 and the flowmeter 141.
The filter screens 136 are arranged into an upper layer, a middle layer and a lower layer, and the filter holes of the filter screens 136 in the upper layer, the middle layer and the lower layer are arranged in a staggered way. The filter holes of the filter screen 136 are hexagonal, the diameter of the filter holes of the filter screen 136 is smaller than the distance between the upper, middle and lower layers of the filter screen 136, and the distance between the upper, middle and lower layers of the filter screen 136 is larger than the diameter of the filter holes. The bracket 110 is further provided with a booster pump 150, and a booster pipe 151 of the booster pump 150 is communicated with the infusion tube 142. Be equipped with (mixing) shaft 131 in the storage fertile storehouse 130, storage fertile storehouse 130 top is equipped with the opening, and (mixing) shaft 131 passes the opening and is connected with the agitator motor 132 at storage fertile storehouse 130 top, and (mixing) shaft 131 passes through sealed bearing with the opening and is connected. The stirring shaft 131 is connected with a plurality of stirring rods 134, and the surfaces of the stirring rods 134 are provided with a mesh coating. A plurality of ultrasonic vibrators 135 are arranged in the fertilizer storage bin 130.
The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which are within the protection scope of the present invention; therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The utility model provides a fertilizer injection unit is planted to crops which characterized in that: comprises a bracket (110) and a fertilizer storage bin (130) arranged on the bracket (110), liquid fertilizer is stored in the fertilizer storage bin (130), a liquid guide tube (140) is communicated with the bottom of the fertilizer storage bin (130), a filter screen (136) is arranged between the fertilizer storage bin (130) and the liquid guide tube (140), a flow meter (141) is arranged in the liquid guide tube (140), the liquid guide tube (140) is communicated with a liquid conveying tube (142), the liquid conveying tube (142) is communicated with a telescopic fertilizing mechanism (170), the telescopic fertilizing mechanism (170) comprises a hydraulic telescopic rod (172), the hydraulic telescopic rod (172) is connected with a connecting rod (173), a cavity is arranged in the connecting rod (173) and communicated with the liquid conveying tube (142), a shell (174) is sleeved on the outer side of the connecting rod (173), a plurality of spray heads (179) are arranged on the shell (174) and communicated with the cavity in the connecting, one end, far away from the hydraulic telescopic rod (172), of the connecting rod (173) is connected with a fixing rod (178), a pressure sensor (176) is arranged between the fixing rod (178) and the shell (174), one end, far away from the hydraulic telescopic rod (172), of the fixing rod (178) is provided with a drill bit (177), the support (110) is provided with a wheel (120), the wheel (120) is in rolling connection with the support (110) through a rolling shaft, the wheel (120) is provided with a turn number counter (121), the bottom of the support (110) is further provided with a first displacement detector (111) and a second displacement detector (112) which face downwards, the first displacement detector (111) and the second displacement detector (112) are respectively arranged on two sides of the support (110), and the distance between the first displacement detector (111) and the second displacement detector (112) and the adjacent wheel (120) is 10-15 cm, the support (110) is further provided with a control box (160), a storage battery and a control chip are arranged in the control box (160), the storage battery is electrically connected with the control chip, and the control chip is electrically connected with the turn number counter (121), the first displacement detector (111), the second displacement detector (112), the pressure sensor (176) and the flowmeter (141) respectively. The bracket (110) is also provided with a booster pump (150), and a booster pipe (151) of the booster pump (150) is communicated with the infusion tube (142). The control chip is electrically connected with the booster pump (150).
2. The crop planting and fertilizing apparatus as claimed in claim 1, wherein: the filter screen (136) is arranged into an upper layer and a lower layer, and the filter holes of the filter screen (136) are arranged in a staggered mode.
3. The crop planting and fertilizing apparatus as claimed in claim 1, wherein: the filter screens (136) are arranged into an upper layer, a middle layer and a lower layer, and the filter holes of the filter screens (136) are arranged in a staggered mode.
4. A crop planting and fertilizing apparatus as claimed in either of claims 2 or 3, wherein: the shape of the filtering holes of the filtering net (136) is pentagonal or hexagonal.
5. The crop planting and fertilizing apparatus as claimed in claim 2, wherein: the diameter of the filtering holes of the filtering net (136) is smaller than the distance between the upper and lower layers of the filtering net (136).
6. The crop planting and fertilizing apparatus as claimed in claim 3, wherein: the diameter of the filtering holes of the filtering net (136) is smaller than the distance between the upper layer of the filtering net (136) and the middle layer of the filtering net, and the distance between the upper layer of the filtering net, the middle layer of the filtering net and the lower layer of the filtering net (136) is larger than the diameter of the filtering holes.
7. The crop planting and fertilizing apparatus as claimed in any one of claims 1, 3, 5, 6, wherein: be equipped with (mixing) shaft (131) in storage fertilizer storehouse (130), storage fertilizer storehouse (130) top is equipped with the opening, stirring shaft (131) pass the opening and are connected with agitator motor (132) at storage fertilizer storehouse (130) top, stirring shaft (131) pass through sealed bearing with the opening and are connected.
8. The crop planting and fertilizing apparatus as claimed in claim 7, wherein: the stirring shaft (131) is connected with a plurality of stirring rods (134), and the surfaces of the stirring rods (134) are provided with mesh coatings.
9. The crop planting and fertilizing apparatus as claimed in claim 8, wherein: a plurality of ultrasonic vibrators (135) are arranged in the fertilizer storage bin (130).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010346380.XA CN111418329A (en) | 2020-04-27 | 2020-04-27 | Fertilizer injection unit is planted to crops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010346380.XA CN111418329A (en) | 2020-04-27 | 2020-04-27 | Fertilizer injection unit is planted to crops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111418329A true CN111418329A (en) | 2020-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010346380.XA Withdrawn CN111418329A (en) | 2020-04-27 | 2020-04-27 | Fertilizer injection unit is planted to crops |
Country Status (1)
| Country | Link |
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| CN (1) | CN111418329A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112400443A (en) * | 2020-10-15 | 2021-02-26 | 广东轻工职业技术学院 | Water, fertilizer and pesticide integrated irrigation device and irrigation method |
| CN113906882A (en) * | 2021-09-30 | 2022-01-11 | 台前县金园农业机械有限公司 | Automatic detect fertilization multi-functional device |
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| CN107079655A (en) * | 2017-05-24 | 2017-08-22 | 黄文波 | Fertilizer apparatus |
| CN108055905A (en) * | 2018-01-02 | 2018-05-22 | 昆明理工大学 | A kind of walking ground lower leaf fertigation device |
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| CN209435799U (en) * | 2018-12-13 | 2019-09-27 | 邢台市农业科学研究院 | A kind of agricultural planting fertilizer apparatus |
| CN110786111A (en) * | 2019-11-21 | 2020-02-14 | 山西农业大学 | Fertilizer applying device |
| CN111010928A (en) * | 2020-01-03 | 2020-04-17 | 浙江盛元文化艺术有限公司 | Fertilizer injection unit for afforestation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120216732A1 (en) * | 2010-08-23 | 2012-08-30 | Raven Industries, Inc. | Method and apparatus for applying a minimum flow of anhydrous ammonia at targeted rates due to limitations existing in current distribution/delivery |
| CN107079655A (en) * | 2017-05-24 | 2017-08-22 | 黄文波 | Fertilizer apparatus |
| CN108055905A (en) * | 2018-01-02 | 2018-05-22 | 昆明理工大学 | A kind of walking ground lower leaf fertigation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112400443A (en) * | 2020-10-15 | 2021-02-26 | 广东轻工职业技术学院 | Water, fertilizer and pesticide integrated irrigation device and irrigation method |
| CN113906882A (en) * | 2021-09-30 | 2022-01-11 | 台前县金园农业机械有限公司 | Automatic detect fertilization multi-functional device |
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Application publication date: 20200717 |