CN105723903A - Variable rate fertilizer applicator and variable rate fertilization method - Google Patents
Variable rate fertilizer applicator and variable rate fertilization method Download PDFInfo
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- CN105723903A CN105723903A CN201610100574.5A CN201610100574A CN105723903A CN 105723903 A CN105723903 A CN 105723903A CN 201610100574 A CN201610100574 A CN 201610100574A CN 105723903 A CN105723903 A CN 105723903A
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- fertilizer
- locomotive
- variable
- roller
- hopper
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C15/00—Fertiliser distributors
- A01C15/16—Fertiliser distributors with means for pushing out the fertiliser, e.g. by a roller
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The invention relates to the technical field of agriculture, in particular to a variable rate fertilizer applicator and a variable rate fertilization method. The variable rate fertilizer applicator comprises a locomotive (1), a hopper (2), a fertilizer feeding device (3) and a controller, the hopper (2) is installed on the locomotive (1), and the fertilizer feeding device (3) is located at a fertilizer feeding port of the hopper (2); the variable rate fertilizer applicator is characterized in that the fertilizer feeding device (3) comprises a motor (301), fertilizer feeding wheels (304) and a rotation speed detecting device, the fertilizer feeding wheels (304) are driven by the motor (301) to rotate, and the rotation speed detecting device is used for detecting the rotation speed of the fertilizer feeding wheels (304); a vehicle speed detecting device used for detecting the movement speed of the locomotive (1) is installed on the locomotive (1), and the controller can adjust the rotation speed of the motor (301) according to the detected vehicle speed of the locomotive (1) and expected fertilizing requirement.
Description
Technical field
Invention relates to agricultural technology field, more particularly relates to a kind of variable-rate fertilization and variable fertilization method.
Background technology
Farmland fertilization operation is indispensable cargo handling operation in agricultural planting process, plant growth different phase, it is necessary to the fertilizer of Different Nutrients, in whole Growing season, crop typically requires topdresses repeatedly, and therefore, fertilising operation is one of link that in production estimation, labor intensity is relatively larger.Traditional earth's surface topdressing operation mode is manually to spread fertilizer over the fields, and walking is inconvenient, sows uneven, and labor intensity is big, and inefficiency and human cost are high.
Current mechanical type earth's surface is topdressed main based on eccentric circle disc type fertilizer distributor, and with the disk of high speed rotating for power, fertilizer is spread out under centrifugal action.As restrain triumphant wait design scattering type rice seedling fertilizer applicator (referring to the design of rice seedling fertilizer applicator and application. the friend of farmer richness, 2014 (6): 186-187), can be used for the broadcast applications such as carbamide, nitrogen, compound fertilizer and the special fertilizer commonly used, but due to fertilizer self material characteristic, easily affected (especially wind) by field conditions, it is relatively difficult that topdressing operation carries out being precisely controlled of dose, and the uniformity on working width direction can not be guaranteed simultaneously.Xia Junfang devise swing pipe type fertilizer distributor (referring to the overall design of swing pipe type fertilizer distributor. agricultural machinery uses and maintenance, 2014 (2): 11-12), simulation human arm swings spreads fertilizer over the fields, it is effectively combined facility pace to carry out spreading fertilizer over the fields speed controlling, uniformity promotes to some extent than disc type fertilizer distributor, but working width is not ideal.
On-demand fertilising is the important content of precision agriculture, the variable fertilization Work machine of more existing comparative maturities outside Present Domestic.John deer develops a air-sweeping type seed manure car, is mainly used in seed manure and spreads fertilizer over the fields；Xie Yufeng et al. have developed high-speed broad-width pneumatic transmission formula collection ejaculation volume planting and fertilizing machine (referring to the development [J] of high-speed broad-width pneumatic transmission formula collection ejaculation volume planting and fertilizing machine. agricultural science and technology and equipment, 2013 (5): 19-21) air-flow, is make use of to carry out defeated fertilizer and operation of dividing booty.But these types need the tractor of supporting more than 300 horsepowers, use in the paddy field of the little area in rice field especially southern china and be subject to bigger restriction.
Topdress the fertilizer apparatus mode that mostly adopts all rollers to link of machinery in above-mentioned earth's surface, on facility direct of travel, only realize variable fertilization control, it is not carried out the defertilizing amount of single roller independently to control and long-distance sand transport on working width direction, it does not have on working width direction, realize variable fertilization control.Additionally, after fertilizer output, its mode of movement is many based on flow by gravity, fertilizer enters the more difficult control of pose on earth's surface.
In today that precision agriculture technology development is ripe, the requirement of Tree Precise Fertilization is not only simply confined to adjust dose in conjunction with facility pace, also reasonably on working width direction, also to realize variable fertilization control targetedly in conjunction with the growing way situation of crop, to realize less area crops carries out site-directed quantitative fertilising operation.
Summary of the invention
The present invention overcomes at least one defect (deficiency) described in above-mentioned prior art, it is provided that a kind of variable-rate fertilization, it addition, the present invention also provides for a kind of variable fertilization method.
For solving above-mentioned technical problem, technical scheme is as follows:
A kind of variable-rate fertilization, including locomotive, hopper, fertilizer distributor and controller, described hopper is arranged on locomotive, and described fertilizer distributor is positioned at the defertilizing opening of hopper；It is characterized in that, described fertilizer distributor includes motor, roller and speed detector, and described roller rotates under driven by motor, and described speed detector is for detecting the rotating speed of roller；Being provided with the vehicle speed detector device for detecting locomotive movement velocity on described locomotive, described controller can require to adjust the rotating speed of motor according to the speed of the locomotive detected and expection fertilising.
Further, as optimal technical scheme, described speed detector includes some magnet steel and tongue tube sensor, the outer surface of the shaft coupling that described magnet steel is distributed between rotating shaft or motor shaft or motor shaft and the rotating shaft of roller, described tongue tube sensor is for detecting magnet steel and feeding back the rotating speed of roller；Described vehicle speed detector device includes some magnet steel and tongue tube sensor, and described magnet steel is distributed on power transmission shaft or the wheel shaft of locomotive, and described tongue tube sensor is used for detecting magnet steel and feeding back locomotive gait of march.
Further, as optimal technical scheme, the quantity of described defertilizing opening and fertilizer distributor is multiple, and described defertilizing opening is evenly spaced in below hopper, each fertilizer distributor respectively with defertilizing opening corresponding matching.
Further, as optimal technical scheme, also include fertilizer conveying device, described fertilizer conveying device includes blower fan, airflow diversion case, three way cock and fertilizer delivering pipe, described assembling is on locomotive, and the air outlet of described blower fan is connected with the air inlet of airflow diversion case, and each air outlet of described airflow diversion case is connected with the air flow inlet of three way cock respectively, the fertile mouth that falls of described three way cock is positioned at below roller, and the fertilizer outlet of described three way cock is connected with fertilizer delivering pipe.
Further, as optimal technical scheme, described locomotive being provided with truss mechanism, described truss mechanism can move up and down in vertical direction.
Further, as optimal technical scheme, described truss mechanism can in the horizontal direction in do folding movement.
Further, as optimal technical scheme, the tail end level of described fertilizer delivering pipe is distributed on truss mechanism.
Further, as optimal technical scheme, the tail end of described fertilizer delivering pipe is provided with fertilizer and is scattered device.
The present invention also provides for a kind of variable fertilization method, adopts above-described variable-rate fertilization, comprises the following steps:
A. in hopper, add fertilizer, expanded truss mechanism (5), open blower fan (401), and keep fertilizer delivering pipe (404) unobstructed；
B. controller combines the guide of fertilising operation prescription map and global positioning system, determine the respective target dose of fertilizer distributor (3), according to this target dose and locomotive gait of march, set the rotating speed of the roller (304) of fertilizer distributor (3) by controller, implement variable fertilization；
C. in fertilising operation, alteration according to speed detector detection and the locomotive gait of march of feedback, roller (304) rotating speed and target dose, the rotating speed of the motor (301) of each fertilizer distributor (3) is reset respectively by controller, and then the rotating speed of control roller (304), implement variable fertilization；
D. step b and c is repeated, until the fertilising end of job.
Compared with prior art, technical solution of the present invention provides the benefit that:
1. present invention can be implemented in direct of travel and fabric width direction both direction variable fertilization, both met and be carried out controlling to defertilizing amount in conjunction with speed, to ensure fertilising uniformity, realize again in conjunction with the prescription map of crop growing state, zones of different being implemented variable fertilization in fabric width direction to control, while reaching identical fertilization effect, decrease rate of fertilizer, save input cost.
2. the present invention adopts air flow power conveying fertilizer, and horizontal transport distance is remote, and fertilizer can quantify set a distance conveying, improves a lot for fertilizer uniformity tool, and whole course of conveying completes in fertilizer delivering pipe, and fertilizer loss is few, produces fine particle micronic dust few.
3. the present invention can receive stretch truss mechanism fertilising time launch, reach wide cut, high-efficient homework, when not working can folding, reasonably make use of space structure；Lifting truss mechanism can carry out descending operation for crop height, and the crop of variety classes and different growing way is had the suitability widely.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of embodiment 1.
Fig. 2 is the fertilizer distributor structural representation of embodiment 1
Fig. 3 is the fertilizer conveying device structural representation of embodiment 1
Fig. 4 is the three-port structure schematic diagram of embodiment 1
Fig. 5 is the truss lifting structure schematic diagram of embodiment 1
Fig. 6 is the truss held-together/spread-out structure schematic diagram of embodiment 1
Fig. 7 is the modular structure schematic diagram of the controller of embodiment 1.
Accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as the restriction to this patent；In order to the present embodiment is better described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product；To those skilled in the art, in accompanying drawing, some known features and explanation thereof are likely to omission and will be understood by；The corresponding same or analogous parts of same or analogous label；Term the being merely cited for property explanation of position relationship described in accompanying drawing, it is impossible to be interpreted as the restriction to this patent.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical scheme is described further.
Embodiment 1
Shown in Figure 1, variable-rate fertilization provided by the invention includes locomotive 1, hopper 2, fertilizer distributor 3, fertilizer conveying device 4, truss mechanism 5, fertilizer are scattered device 6, controller；Described hopper 2 and truss mechanism 5 are arranged on locomotive 1, and fertilizer distributor 3 is positioned at the defertilizing opening place of hopper 2, and described fertilizer conveying device 4 is arranged on truss mechanism 5, and the described fertilizer device 6 that is scattered is positioned at fertilizer conveying device 4 tail end.
Referring to Fig. 1 and Fig. 2, it is liftoff chassis 11, ultra-narrow field road wheel 12 that described locomotive 1 includes highland；Described fertilizer distributor 3 includes direct current adjustable speed motor 301, six side's rotating shafts 306 are connected by shaft coupling 302, supported six side's rotating shafts 306 by stand bearing 303 to rotate, staggered spur type water jacket roller 304 is mounted in the defertilizing slot 305 at hopper 2 defertilizing opening place, six side's rotating shafts 306 drive it to rotate；Described defertilizing slot 305 is fixed on hopper 2 side bottom.
Referring to Fig. 1, Fig. 3 and Fig. 4, fertilizer conveying device 4 includes blower fan 401, airflow diversion case 402, three way cock 403 and fertilizer delivering pipe 404, the air outlet of blower fan 401 is connected with the air inlet of airflow diversion case 402, each air outlet of described airflow diversion case 402 is connected with the air flow inlet 4031 of three way cock 403 respectively, the fertile mouth 4032 that falls of described three way cock 403 is positioned at below roller 304, and the fertilizer outlet 4033 of described three way cock 403 is connected with fertilizer delivering pipe 404；Described fertilizer conveying mechanism 4 is provided fertilizer conveying required air power by blower fan 401, and blower fan 401 high speed air-flow enters airflow diversion case 402；Air-flow through shunting enters three way cock 403 from 8 outlets uniformly, and the fertilizer fallen into is blown in fertilizer delivering pipe 404 in three way cock 403.
Referring to Fig. 1, Fig. 5 and Fig. 6, truss mechanism 5 includes lifting truss mechanism and truss mechanism of taking down the exhibits, described lifting truss mechanism includes parallelogram lindage 505, fixing truss 503 and electro-hydraulic telescoping cylinder 504, stretching by electro-hydraulic telescoping cylinder 504, parallelogram lindage 505 moves up and down and realizes the lifting of truss mechanism 5；Described truss mechanism of taking down the exhibits includes electro-hydraulic cylinder 502 and support 506 of taking down the exhibits, and described electro-hydraulic cylinder 502 is connected on fixing truss 503, can pass through the flexible of electro-hydraulic cylinder 502, it is achieved take down the exhibits support 506 around initial point rotate as chassis 11 parallel direction, to reduce complete machine space.
Referring to Fig. 7, described controller is made up of data acquisition unit, data processing unit, feedback performance element and human-computer interaction interface；Described data acquisition unit includes magnet steel and tongue tube sensor.Described magnet steel specification is diameter 5mm, thickness 2mm, a part is embedded among 8 grooves on shaft coupling 302 surface (can also embed other positions that can reflect roller rotating speed), another part is embedded on the power transmission shaft surface (can also embed other positions that can reflect locomotive gait of march) of locomotive 1, from the cross section of power transmission shaft, 8 magnet steel are uniformly distributed with 45 ° of central angles on same cross section；Magnet steel can be produced sensing by tongue tube sensor, a part is installed close to the magnet steel of shaft coupling 302, the another part magnet steel near the power transmission shaft surface of locomotive 1 is installed, when motor 301 drives shaft coupling 302 to rotate and in traveling process during the drive axis of locomotive 1, the magnet steel being embedded in shaft coupling surface and power transmission shaft surface will be produced sensing by tongue tube sensor, sensing each time produces a signal of telecommunication, and every 8 sensings represent motors or drive axis one week；Described human-computer interaction interface refers mainly to the user interface shown by touch screen, and user can input four groups of target doses by touch screen and activate and closing control system；Described data processing unit is with STM32 microcontroller for core, and the data that data acquisition unit and human-computer interaction interface are inputted process, and calculates the gait of march of locomotive 1, the theoretical rotational speed of motor 301 and actual speed；Described feedback performance element is made up of STM32 microcontroller and motor-drive circuit, and the rotating speed of motor 301, by calculating the difference of motor 301 theoretical rotational speed and actual speed, is carried out PID control by microcontroller, thus realizing the accurate control to dose.
The operation principle of the present invention is:
The present invention determines the target defertilizing amount of the often point that group defertilizing opening is corresponding by controller according to Fertilization prescription chart, in conjunction with the current gait of march of locomotive 1, controls the rotating speed of roller 304, reaches the dose of objective.Fertilizer is entered the three way cock 403 of fertilizer conveying device 4 by roller 304 from hopper, the fertilizer fallen into is delivered to respective outlet along defertilizing tube 404 through the aperture of three way cock 403 by high velocity air, completes fertilising process after fertilizer is scattered by the device 6 that is scattered.
Embodiment 2
A kind of variable fertilization method, adopts the variable-rate fertilization described in embodiment 1, comprises the following steps:
A. in hopper, add fertilizer, expanded truss mechanism (5), open blower fan (401), and keep fertilizer delivering pipe (404) unobstructed；
B. controller combines the guide of fertilising operation prescription map and global positioning system, determine the respective target dose of fertilizer distributor (3), according to this target dose and locomotive gait of march, set the rotating speed of the roller (304) of fertilizer distributor (3) by controller, implement variable fertilization；
C. in fertilising operation, alteration according to speed detector detection and the locomotive gait of march of feedback, roller (304) rotating speed and target dose, the rotating speed of the motor (301) of each fertilizer distributor (3) is reset respectively by controller, and then the rotating speed of control roller (304), implement variable fertilization；
D. step b and c is repeated, until the fertilising end of job.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within the protection domain of the claims in the present invention.
Claims (9)
1. a variable-rate fertilization, including locomotive (1), hopper (2), fertilizer distributor (3) and controller, described hopper (2) is arranged on locomotive (1), and described fertilizer distributor (3) is positioned at the defertilizing opening of hopper (2)；It is characterized in that, described fertilizer distributor (3) includes motor (301), roller (304) and speed detector, and described roller (304) rotates under motor (301) drives, and described speed detector is used for detecting the rotating speed of roller (304)；Being provided with the vehicle speed detector device for detecting locomotive (1) movement velocity on described locomotive (1), described controller can adjust the rotating speed of motor (301) according to the speed of the locomotive (1) detected and expection fertilising requirement.
2. variable-rate fertilization according to claim 1, it is characterized in that, described speed detector includes some magnet steel and tongue tube sensor, the outer surface of the shaft coupling (302) that described magnet steel is distributed between rotating shaft (306) or motor shaft or motor shaft and the rotating shaft of roller (304), described tongue tube sensor is used for detecting magnet steel and feeding back the rotating speed of roller (304)；Described vehicle speed detector device includes some magnet steel and tongue tube sensor, and described magnet steel is distributed on power transmission shaft or the wheel shaft of locomotive (1), and described tongue tube sensor is used for detecting magnet steel and feeding back locomotive gait of march.
3. variable-rate fertilization according to claim 1 and 2, it is characterised in that the quantity of described defertilizing opening and fertilizer distributor (3) is multiple, described defertilizing opening be evenly spaced in hopper (2) lower section, each fertilizer distributor (3) respectively with defertilizing opening corresponding matching.
4. variable-rate fertilization according to claim 3, it is characterized in that, also include fertilizer conveying device (4), described fertilizer conveying mechanism includes blower fan (401), airflow diversion case (402), three way cock (403) and fertilizer delivering pipe (404), described blower fan (401) is arranged on locomotive (1), the air outlet of described blower fan (401) is connected with the air inlet of airflow diversion case (402), each air outlet of described airflow diversion case (402) is connected with the air flow inlet (4031) of three way cock (403) respectively, the fertile mouth (4032) that falls of described three way cock (403) is positioned at roller (304) lower section, the fertilizer outlet (4033) of described three way cock (403) is connected with fertilizer delivering pipe (404).
5. variable-rate fertilization according to claim 4, it is characterised in that being provided with truss mechanism (5) on described locomotive (1), described truss mechanism (5) can move up and down in vertical direction.
6. variable-rate fertilization according to claim 5, it is characterised in that described truss mechanism (5) can in the horizontal direction in do folding movement.
7. the variable-rate fertilization according to claim 5 or 6, it is characterised in that the tail end level of described fertilizer delivering pipe (304) is distributed on truss mechanism (5).
8. variable-rate fertilization according to claim 7, it is characterised in that the tail end of described fertilizer delivering pipe (404) is provided with fertilizer and is scattered device (6).
9. a variable fertilization method, it is characterised in that adopt the variable-rate fertilization described in any one of claim 4-7, comprise the following steps:
A. in hopper, add fertilizer, expanded truss mechanism (5), open blower fan (401), and keep fertilizer delivering pipe (404) unobstructed；
B. controller combines the guide of fertilising operation prescription map and global positioning system, determine the respective target dose of fertilizer distributor (3), according to this target dose and locomotive gait of march, set the rotating speed of the roller (304) of fertilizer distributor (3) by controller, implement variable fertilization；
C. in fertilising operation, alteration according to speed detector detection and the locomotive gait of march of feedback, roller (304) rotating speed and target dose, the rotating speed of the motor (301) of each fertilizer distributor (3) is reset respectively by controller, and then the rotating speed of control roller (304), implement variable fertilization；
D. step b and c is repeated, until the fertilising end of job.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610100574.5A CN105723903B (en) | 2016-02-24 | 2016-02-24 | A kind of variable-rate fertilization and variable fertilization method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610100574.5A CN105723903B (en) | 2016-02-24 | 2016-02-24 | A kind of variable-rate fertilization and variable fertilization method |
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| CN105723903A true CN105723903A (en) | 2016-07-06 |
| CN105723903B CN105723903B (en) | 2018-11-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106171223A (en) * | 2016-07-19 | 2016-12-07 | 南京农业大学 | A kind of variable fertilization method based on per mu yield potentiality Yu target output |
| CN106258134A (en) * | 2016-07-29 | 2017-01-04 | 西南大学 | Synchronous belt type organic fertilizer applicator |
| CN107593048A (en) * | 2017-10-26 | 2018-01-19 | 北京农业信息技术研究中心 | A kind of plant essence amount interval spot application system and method |
| CN108307754A (en) * | 2018-02-07 | 2018-07-24 | 北京农业信息技术研究中心 | A kind of quantificationally fertilizing machine |
| CN108566804A (en) * | 2018-04-02 | 2018-09-25 | 四川农业大学 | A kind of mating transplanting Pneumatic type deep applying fertilizer rice planter |
| CN114731816A (en) * | 2022-05-05 | 2022-07-12 | 朱良方 | Fixed-point application method of low-diffusivity organic fertilizer |
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| DE102007039371A1 (en) * | 2007-08-14 | 2009-02-19 | Gardena Manufacturing Gmbh | Fertilizer tank for mixer for mixing liquid fertilizer and carrier liquid has annular section which contains fertilizer and has outlets in its upper wall, through which it flows |
| CN105123062A (en) * | 2015-08-03 | 2015-12-09 | 北京农业智能装备技术研究中心 | On-board fertilization device and fertilization control method thereof |
| CN204969094U (en) * | 2015-09-28 | 2016-01-20 | 孙元荣 | Novel multi -functional long -stalked crops plant protection machine |
| CN205017844U (en) * | 2015-10-14 | 2016-02-10 | 哈尔滨星瀚漫索科技开发有限公司 | Electronic fertilizing and seeding of smart volume machine |
| CN205389438U (en) * | 2016-02-24 | 2016-07-27 | 华南农业大学 | Variable rate fertilizer applicator |
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| DE102007039371A1 (en) * | 2007-08-14 | 2009-02-19 | Gardena Manufacturing Gmbh | Fertilizer tank for mixer for mixing liquid fertilizer and carrier liquid has annular section which contains fertilizer and has outlets in its upper wall, through which it flows |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106171223A (en) * | 2016-07-19 | 2016-12-07 | 南京农业大学 | A kind of variable fertilization method based on per mu yield potentiality Yu target output |
| CN106258134A (en) * | 2016-07-29 | 2017-01-04 | 西南大学 | Synchronous belt type organic fertilizer applicator |
| CN106258134B (en) * | 2016-07-29 | 2018-10-09 | 西南大学 | Synchronous belt type organic fertilizer applicator |
| CN107593048A (en) * | 2017-10-26 | 2018-01-19 | 北京农业信息技术研究中心 | A kind of plant essence amount interval spot application system and method |
| CN107593048B (en) * | 2017-10-26 | 2019-07-02 | 北京农业信息技术研究中心 | A kind of plant essence amount interval spot application system and method |
| CN108307754A (en) * | 2018-02-07 | 2018-07-24 | 北京农业信息技术研究中心 | A kind of quantificationally fertilizing machine |
| CN108566804A (en) * | 2018-04-02 | 2018-09-25 | 四川农业大学 | A kind of mating transplanting Pneumatic type deep applying fertilizer rice planter |
| CN114731816A (en) * | 2022-05-05 | 2022-07-12 | 朱良方 | Fixed-point application method of low-diffusivity organic fertilizer |
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| CN105723903B (en) | 2018-11-27 |
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