CN105284247A - Combined feed and fertilizer drill - Google Patents
Combined feed and fertilizer drill Download PDFInfo
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- CN105284247A CN105284247A CN201510821221.XA CN201510821221A CN105284247A CN 105284247 A CN105284247 A CN 105284247A CN 201510821221 A CN201510821221 A CN 201510821221A CN 105284247 A CN105284247 A CN 105284247A
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Abstract
A combined seed and fertilizer drill includes a seeder, a fertilizer applicator and a manure burying device. The seeder comprises a pressure cross bar, a seed barrel, a seed burying device and a seed buffer box. The pressure cross bar is connected to the upper end of the seed barrel; a spring sleeves on the upper part of the seed barrel; the lower end of the seed barrel passes through a seed buffer tank and is connected to the seed burying device; the seed barrel in the seed buffer tank is provided with a seed inlet hole; the fertilizer applicator comprises a pressure bar I, a pressure bar II, a fertilizer buffer tank and a fertilizer distributor in the fertilizer buffer tank; the back of the fertilizer buffer tank is provided with a hole; the manure burying device is arranged below the seeder, and is composed of a bracket, and the seed burying device and fertilizer burying device a bracket, which are arranged below the bracket; and the fertilizer burying device is connected to a fertilizer outlet hole through a conduit. The insertion-type combined seed and fertilizer drill provided by the invention can effectively prevent the grass winding and complete two farming processes, seeding and fertilization, at one-time, thus greatly improving agricultural efficiency, reducing labor intensity of farming personnel and facilitating usage.
Description
Technical field
The present invention relates to a kind of farm machinery, specifically, relate to a kind of fertilizing and seeding apparatus.
Background technology
Agricultural seeding machine is the agricultural machinery often used in farmland, and it effectively can alleviate the labour of staff, effectively improves agricultural production efficiency.The combined seed and fertilizer drill used in current agricultural production, mainly containing is wheel roll-type combined seed and fertilizer drill, is moved, seed or fertilizer are taken out of in seed-fertilizer box, broadcast in soil by the rolling of powered belt driving wheel.The sower of this version, easily be wound around by weeds, need often to shut down to weed a garden.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the above-mentioned defect that prior art exists, provides a kind of plug-type combined seed and fertilizer drill, disposable completing is sowed and fertilising two agro-farming processes, easy to use, greatly can improve farming efficiency, alleviate the labour intensity of agro-farming personnel.
The technical solution adopted for the present invention to solve the technical problems is: a kind of combined seed and fertilizer drill, comprises seeder, fertilizer applicator and seed manure burying device, described seeder comprises pressure cross bar, seed gun barrel, seed baffle-box and seed burying device, described pressure cross bar is connected with the upper end of seed gun barrel, the top cover of described seed gun barrel has spring, the lower end of described seed gun barrel connects seed burying device through seed baffle-box, described seed baffle-box has seed inlet I, and the seed gun barrel in described seed baffle-box has into kind of a hole, described fertilizer applicator comprises depression bar I, depression bar II, fertilizer baffle-box and the fertilizer distributor be located in fertilizer baffle-box, the back side of described fertilizer baffle-box has hole, fertilizer distributor is made up of cylinder II and the cylinder I be enclosed within outside cylinder II, the centre of described cylinder II is provided with dividing plate I, be divided into left fertilizer chamber lattice and right fertilizer chamber lattice, described left fertilizer chamber lattice, lattice top, right fertilizer chamber all has fertilizer inlet II, bottom all has out fertile hole II, described cylinder I top has the fertilizer inlet I corresponding with fertilizer inlet II, bottom has and corresponding with going out fertile hole II goes out fertile hole I, described cylinder I has arc gear mouth, described cylinder II is provided with gear lever, one end of described gear lever is fixed on the cylinder II corresponding to arc gear mouth, the other end passes arc gear mouth and is connected with one end with depression bar II, hole, the other end of described depression bar II is connected with one end of depression bar I, the other end of described depression bar I is connected with pressure cross bar, described fertilizer baffle-box has into fertile mouth I, described seed manure burying device is located at below seeder, by support and be positioned at seed burying device below support, fertilizer burying device forms, described fertilizer burying device by conduit with go out fertile hole I and be communicated with.
Further, described seed burying device is surrounded by tip inserted sheet, triangle lateral plate and door.Under normal conditions, seed burying device is enclosed construction, and in the process of user's down force pressure cross bar, spring contraction, seed gun barrel passes seed burying device, and the seed in seed gun barrel falls into soil.
Further, described fertilizer burying device is surrounded by tip inserted sheet and triangle lateral plate.
Further, also be provided with seed-fertilizer box, dividing plate II is provided with in described seed-fertilizer box, be divided into seeds chamber lattice and fertilizer chamber lattice, be communicated with the seed inlet I on seed baffle-box by conduit bottom described seeds chamber lattice, described seeds chamber lattice top has seed inlet II, is communicated with bottom the lattice of described fertilizer chamber by conduit with the fertile mouth I that enters on fertilizer baffle-box, lattice top, described fertilizer chamber has into fertile mouth II, and described seed-fertilizer box is provided with braces.
Another kind of technical scheme: a kind of combined seed and fertilizer drill, comprises seeder, fertilizer applicator and seed manure burying device, described seeder comprises pressure cross bar, described pressure cross bar is connected with plural seed gun barrel, the lower end of each seed gun barrel connects seed burying device through seed baffle-box, described seed baffle-box has seed inlet I, seed gun barrel in described seed baffle-box has into kind of a hole, the middle part of described pressure cross bar is connected with stay pipe, and on described stay pipe, cover has spring, and the lower end of described stay pipe is connected with fertilizer applicator, described fertilizer applicator comprises depression bar I, depression bar II, fertilizer baffle-box and the fertilizer distributor be located in fertilizer baffle-box, the back side of described fertilizer baffle-box has hole, described fertilizer distributor is made up of cylinder II and the cylinder I be enclosed within outside cylinder II, the centre of described cylinder II is provided with dividing plate I, be divided into left fertilizer chamber lattice and right fertilizer chamber lattice, described left fertilizer chamber lattice, lattice top, right fertilizer chamber all has fertilizer inlet II, bottom all has out fertile hole II, described cylinder I top has the fertilizer inlet I corresponding with fertilizer inlet II, bottom has and corresponding with going out fertile hole II goes out fertile hole I, described cylinder I has arc gear mouth, described cylinder II is provided with gear lever, one end of described gear lever is fixed on the cylinder II corresponding to arc gear mouth, the other end passes arc gear mouth and is connected with one end with depression bar II, hole, the other end of depression bar II is connected with one end of depression bar I, the other end of described depression bar I is connected with pressure cross bar, described fertilizer baffle-box has into fertile mouth I, described seed manure burying device is located at below seeder, by support and be positioned at seed burying device below support, fertilizer burying device forms, described fertilizer burying device by conduit with go out fertile hole I and be communicated with.
Further, described seed burying device is surrounded by tip inserted sheet, triangle lateral plate and door.
Further, described fertilizer burying device is surrounded by tip inserted sheet and triangle lateral plate.
The combined seed and fertilizer drill of the present invention, is plug-type combined seed and fertilizer drill, can effectively prevents weeds winding, and disposable completing is sowed and fertilising two agro-farming processes, thus greatly improves farming efficiency, alleviates the labour intensity of agro-farming personnel, and easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation of seeder embodiment illustrated in fig. 1;
Fig. 3 is the structural representation of fertilizer applicator embodiment illustrated in fig. 1 and seed manure burying device;
Fig. 4 is the structure enlarged diagram of fertilizer distributor embodiment illustrated in fig. 1;
Fig. 5 is the structural representation of the embodiment of the present invention 2.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
embodiment 1
With reference to Fig. 1-Fig. 4, the present embodiment comprises seeder 1, fertilizer applicator 2 and seed manure burying device 3.Seeder 1 comprises pressure cross bar 1-1, seed gun barrel 1-2, seed baffle-box 1-3 and seed burying device 1-4, pressure cross bar 1-1 is connected with the upper end of seed gun barrel 1-2, the top cover of seed gun barrel 1-2 has spring 1-5, the lower end of seed gun barrel 1-2 connects seed burying device 1-4 through seed baffle-box 1-3, seed baffle-box 1-3 has seed inlet I 1-6, the seed gun barrel 1-2 in seed baffle-box 1-3 has into kind of a hole 1-7.Fertilizer applicator 2 comprises depression bar I 2-1, depression bar II 2-2, fertilizer baffle-box 2-3 and the fertilizer distributor 2-4 be located in fertilizer baffle-box 2-3, the back side of fertilizer baffle-box 2-3 has hole 2-5, fertilizer distributor 2-4 is made up of cylinder II 2-4-2 and cylinder I 2-4-1 be enclosed within outside cylinder II 2-4-2, the centre of cylinder II 2-4-2 is provided with dividing plate I 2-4-3, be divided into left fertilizer chamber lattice 2-4-4 and right fertilizer chamber lattice 2-4-5, left fertilizer chamber lattice 2-4-4, lattice 2-4-5 top, right fertilizer chamber all has fertilizer inlet II 2-4-6, bottom all has out fertile hole II 2-4-7, cylinder I 2-4-1 top has fertilizer inlet I 2-4-8 corresponding with fertilizer inlet II 2-4-6, bottom has and corresponding with going out fertile hole II 2-4-7 goes out fertile hole I 2-4-9, cylinder I 2-4-1 has arc gear mouth 2-4-10, cylinder II 2-4-2 is provided with gear lever 2-4-11, one end of gear lever 2-4-11 is fixed on cylinder II 2-4-2 corresponding to arc gear mouth 2-4-10, the other end passes arc gear mouth 2-4-10 and is connected with one end of depression bar II 2-2 with hole 2-5, the other end of depression bar II 2-2 is connected with one end of depression bar I 2-1, the other end of depression bar I 2-1 is connected with pressure cross bar 1-1, fertilizer baffle-box 2-3 has into fertile mouth I 2-6.Seed manure burying device 3 is located at below seeder 1, it is two by support 3-1 and seed burying device 1-4, the fertilizer burying device 3-2(be positioned at below support 3-1, lay respectively at seed burying device 1-4 both sides) composition, fertilizer burying device 3-2 by conduit with go out fertile hole I 2-4-9 and be communicated with.Seed manure burying device 3 falls into soil for guiding seed and fertilizer, ensures that seed and fertilizer maintain a certain distance simultaneously, prevents from burning and plants.
Under normal conditions, fertilizer inlet I 2-4-8 and fertilizer inlet II 2-4-6 staggers, go out fertile hole I 2-4-9 and go out fertile hole II 2-4-7 to stagger, in the process of user's down force pressure cross bar 1-1, gear lever 2-4-11 drives cylinder II 2-4-2 to rotate under force, fertilizer inlet I 2-4-8 and fertilizer inlet II 2-4-6 coincide, and goes out fertile hole I 2-4-9 and go out fertile hole II 2-4-7 to coincide, and fertilizer falls into soil.
In the present embodiment, seed burying device 1-4 is surrounded by tip inserted sheet, triangle lateral plate and door.Under normal conditions, seed burying device 1-4 is enclosed construction, and in the process of user's down force pressure cross bar 1-1, spring 1-5 shrinks, and seed gun barrel 1-2 passes seed burying device 1-4, and the seed in seed gun barrel 1-2 falls into soil.
In the present embodiment, fertilizer burying device 3-2 is surrounded by tip inserted sheet and triangle lateral plate.
In the present embodiment, also be provided with seed-fertilizer box 4, dividing plate II 4-1 is provided with in seed-fertilizer box 4, be divided into seeds chamber lattice 4-2 and fertilizer chamber lattice 4-3, be communicated with seed inlet I 1-6 on seed baffle-box 1-3 by conduit bottom seeds chamber lattice 4-2, seeds chamber lattice 4-2 top has seed inlet II 4-4, be communicated with fertile mouth I 2-6 that enters on fertilizer baffle-box 2-3 by conduit bottom the lattice 4-3 of fertilizer chamber, lattice 4-3 top, fertilizer chamber has into fertile mouth II 4-5, seed-fertilizer box 4 is provided with braces 4-6, for seed-fertilizer box 4 is carried on the back at back.
embodiment 2
With reference to Fig. 5, the present embodiment comprises seeder 1, fertilizer applicator 2 and seed manure burying device 3.Seeder 1 comprises pressure cross bar 1-1, the two ends of pressure cross bar 1-1 are connected with seed gun barrel 1-2, the lower end of each seed gun barrel 1-2 connects seed burying device 1-4 through seed baffle-box 1-3, seed baffle-box 1-3 has seed inlet I 1-6, seed gun barrel 1-2 in seed baffle-box 1-3 has into kind of a hole 1-7, the middle part of pressure cross bar 1-1 is connected with stay pipe 1-8, and on stay pipe 1-8, cover has spring 1-5, and the lower end of stay pipe 1-8 is connected with fertilizer applicator 2.Fertilizer applicator 2 comprises depression bar I 2-1, depression bar II 2-2, fertilizer baffle-box 2-3 and the fertilizer distributor 2-4 be located in fertilizer baffle-box 2-3, the back side of fertilizer baffle-box 2-3 has hole 2-5, fertilizer distributor 2-4 is made up of cylinder II 2-4-2 and cylinder I 2-4-1 be enclosed within outside cylinder II 2-4-2, the centre of cylinder II 2-4-2 is provided with dividing plate I 2-4-3, be divided into left fertilizer chamber lattice 2-4-4 and right fertilizer chamber lattice 2-4-5, left fertilizer chamber lattice 2-4-4, lattice 2-4-5 top, right fertilizer chamber all has fertilizer inlet II 2-4-6, it is two that bottom all has out fertile hole II 2-4-7(, certainly, also can increase according to actual conditions), cylinder I 2-4-1 top has fertilizer inlet I 2-4-8 corresponding with fertilizer inlet II 2-4-6, bottom has that corresponding with going out fertile hole II 2-4-7 to go out fertile hole I 2-4-9(be two, certainly, also can increase according to actual conditions), cylinder I 2-4-1 has arc gear mouth 2-4-10, cylinder II 2-4-2 is provided with gear lever 2-4-11, one end of gear lever 2-4-11 is fixed on cylinder II 2-4-2 corresponding to arc gear mouth 2-4-10, the other end passes arc gear mouth 2-4-10 and is connected with one end of depression bar II 2-2 with hole 2-5, the other end of depression bar II 2-2 is connected with one end of depression bar I 2-1, the other end of depression bar I 2-1 is connected with pressure cross bar 1-1, fertilizer baffle-box 2-3 has into fertile mouth I 2-6.Seed manure burying device 3 is located at below seeder 1, it is two by support 3-1 and seed burying device 1-4, the fertilizer burying device 3-2(be positioned at below support 3-1, lay respectively at seed burying device 1-4 both sides) composition, fertilizer burying device 3-2 by conduit with go out fertile hole I 2-4-9 and be communicated with.Seed manure burying device 3 falls into soil for guiding seed and fertilizer, ensures that seed and fertilizer maintain a certain distance simultaneously, prevents from burning and plants.
Under normal conditions, fertilizer inlet I 2-4-8 and fertilizer inlet II 2-4-6 staggers, go out fertile hole I 2-4-9 and go out fertile hole II 2-4-7 to stagger, in the process of user's down force pressure cross bar 1-1, gear lever 2-4-11 drives cylinder II 2-4-2 to rotate under force, fertilizer inlet I 2-4-8 and fertilizer inlet II 2-4-6 coincide, and goes out fertile hole I 2-4-9 and go out fertile hole II 2-4-7 to coincide, and fertilizer falls into soil.
In the present embodiment, the structure of described seed burying device 1-4, fertilizer burying device 3-2 is with embodiment 1.
The pressure cross bar 1-1 of the present embodiment also can connect more seed gun barrel 1-2, meanwhile, configure more seed baffle-box 1-3, seed burying device 1-4 and fertilizer burying device 3-2, to form ferti-seeding unit.
The above embodiment is only the preferred embodiment of the present invention, not limits practical range of the present invention with this, therefore the change that all shapes according to the present invention, principle are done, all should be encompassed in protection scope of the present invention.
Claims (7)
1. a combined seed and fertilizer drill, is characterized in that: comprise seeder, fertilizer applicator and seed manure burying device, described seeder comprises pressure cross bar, seed gun barrel, seed baffle-box and seed burying device, described pressure cross bar is connected with the upper end of seed gun barrel, the top cover of described seed gun barrel has spring, the lower end of described seed gun barrel connects seed burying device through seed baffle-box, described seed baffle-box has seed inlet I, and the seed gun barrel in described seed baffle-box has into kind of a hole, described fertilizer applicator comprises depression bar I, depression bar II, fertilizer baffle-box and the fertilizer distributor be located in fertilizer baffle-box, the back side of described fertilizer baffle-box has hole, fertilizer distributor is made up of cylinder II and the cylinder I be enclosed within outside cylinder II, the centre of described cylinder II is provided with dividing plate I, be divided into left fertilizer chamber lattice and right fertilizer chamber lattice, described left fertilizer chamber lattice, lattice top, right fertilizer chamber all has fertilizer inlet II, bottom all has out fertile hole II, described cylinder I top has the fertilizer inlet I corresponding with fertilizer inlet II, bottom has and corresponding with going out fertile hole II goes out fertile hole I, described cylinder I has arc gear mouth, described cylinder II is provided with gear lever, one end of described gear lever is fixed on the cylinder II corresponding to arc gear mouth, the other end passes arc gear mouth and is connected with one end with depression bar II, hole, the other end of described depression bar II is connected with one end of depression bar I, the other end of described depression bar I is connected with pressure cross bar, described fertilizer baffle-box has into fertile mouth I, described seed manure burying device is located at below seeder, by support and be positioned at seed burying device below support, fertilizer burying device forms, described fertilizer burying device by conduit with go out fertile hole I and be communicated with.
2. combined seed and fertilizer drill according to claim 1, is characterized in that: described seed burying device is surrounded by tip inserted sheet, triangle lateral plate and door.
3. combined seed and fertilizer drill according to claim 1 and 2, is characterized in that: described fertilizer burying device is surrounded by tip inserted sheet and triangle lateral plate.
4. combined seed and fertilizer drill according to claim 1 and 2, it is characterized in that: be also provided with seed-fertilizer box, dividing plate II is provided with in described seed-fertilizer box, be divided into seeds chamber lattice and fertilizer chamber lattice, be communicated with the seed inlet I on seed baffle-box by conduit bottom described seeds chamber lattice, described seeds chamber lattice top has seed inlet II, is communicated with bottom the lattice of described fertilizer chamber by conduit with the fertile mouth I that enters on fertilizer baffle-box, lattice top, described fertilizer chamber has into fertile mouth II, and described seed-fertilizer box is provided with braces.
5. a combined seed and fertilizer drill, is characterized in that: comprise seeder, fertilizer applicator and seed manure burying device, described seeder comprises pressure cross bar, described pressure cross bar is connected with plural seed gun barrel, the lower end of each seed gun barrel connects seed burying device through seed baffle-box, described seed baffle-box has seed inlet I, seed gun barrel in described seed baffle-box has into kind of a hole, the middle part of described pressure cross bar is connected with stay pipe, and on described stay pipe, cover has spring, and the lower end of described stay pipe is connected with fertilizer applicator, described fertilizer applicator comprises depression bar I, depression bar II, fertilizer baffle-box and the fertilizer distributor be located in fertilizer baffle-box, the back side of described fertilizer baffle-box has hole, described fertilizer distributor is made up of cylinder II and the cylinder I be enclosed within outside cylinder II, the centre of described cylinder II is provided with dividing plate I, be divided into left fertilizer chamber lattice and right fertilizer chamber lattice, described left fertilizer chamber lattice, lattice top, right fertilizer chamber all has fertilizer inlet II, bottom all has out fertile hole II, described cylinder I top has the fertilizer inlet I corresponding with fertilizer inlet II, bottom has and corresponding with going out fertile hole II goes out fertile hole I, described cylinder I has arc gear mouth, described cylinder II is provided with gear lever, one end of described gear lever is fixed on the cylinder II corresponding to arc gear mouth, the other end passes arc gear mouth and is connected with one end with depression bar II, hole, the other end of depression bar II is connected with one end of depression bar I, the other end of described depression bar I is connected with pressure cross bar, described fertilizer baffle-box has into fertile mouth I, described seed manure burying device is located at below seeder, by support and be positioned at seed burying device below support, fertilizer burying device forms, described fertilizer burying device by conduit with go out fertile hole I and be communicated with.
6. combined seed and fertilizer drill according to claim 5, is characterized in that: described seed burying device is surrounded by tip inserted sheet, triangle lateral plate and door.
7. the combined seed and fertilizer drill according to claim 5 or 6, is characterized in that: described fertilizer burying device is surrounded by tip inserted sheet and triangle lateral plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510821221.XA CN105284247B (en) | 2015-11-24 | 2015-11-24 | Combined seed and fertilizer drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510821221.XA CN105284247B (en) | 2015-11-24 | 2015-11-24 | Combined seed and fertilizer drill |
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| Publication Number | Publication Date |
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| CN105284247A true CN105284247A (en) | 2016-02-03 |
| CN105284247B CN105284247B (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510821221.XA Active CN105284247B (en) | 2015-11-24 | 2015-11-24 | Combined seed and fertilizer drill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106068823A (en) * | 2016-08-17 | 2016-11-09 | 湖北永祥农机装备有限公司 | A kind of spreading gear of granule materials |
| CN106576528A (en) * | 2016-12-19 | 2017-04-26 | 湖南农业大学 | Seed spray device and sowing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718561B (en) * | 2018-04-28 | 2021-04-06 | 贵州黔峰百草科技发展有限公司 | Astragalus root seeder |
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|---|---|---|---|---|
| US4726304A (en) * | 1984-10-27 | 1988-02-23 | Amazonen Werke H. Dreyer Gmbh & Co, Kg | Seed drill |
| CN201557385U (en) * | 2009-12-21 | 2010-08-25 | 河北省农林科学院农业资源环境研究所 | Quick positioning quantitative hole fertilization device |
| CN102428788A (en) * | 2011-09-30 | 2012-05-02 | 苏补珍 | Artificial fertilizer applicator |
| CN102884909A (en) * | 2012-10-24 | 2013-01-23 | 青岛嘉禾***业有限公司 | Manufacturing method of liquid fertilizer application device |
| CN204157257U (en) * | 2014-10-13 | 2015-02-18 | 张家口张杂谷配套机械制造有限公司 | A kind of hill-drop planter |
| CN205124312U (en) * | 2015-11-24 | 2016-04-06 | 姚良海 | Combined seed and fertilizer drill |
-
2015
- 2015-11-24 CN CN201510821221.XA patent/CN105284247B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4726304A (en) * | 1984-10-27 | 1988-02-23 | Amazonen Werke H. Dreyer Gmbh & Co, Kg | Seed drill |
| CN201557385U (en) * | 2009-12-21 | 2010-08-25 | 河北省农林科学院农业资源环境研究所 | Quick positioning quantitative hole fertilization device |
| CN102428788A (en) * | 2011-09-30 | 2012-05-02 | 苏补珍 | Artificial fertilizer applicator |
| CN102884909A (en) * | 2012-10-24 | 2013-01-23 | 青岛嘉禾***业有限公司 | Manufacturing method of liquid fertilizer application device |
| CN204157257U (en) * | 2014-10-13 | 2015-02-18 | 张家口张杂谷配套机械制造有限公司 | A kind of hill-drop planter |
| CN205124312U (en) * | 2015-11-24 | 2016-04-06 | 姚良海 | Combined seed and fertilizer drill |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106068823A (en) * | 2016-08-17 | 2016-11-09 | 湖北永祥农机装备有限公司 | A kind of spreading gear of granule materials |
| CN106576528A (en) * | 2016-12-19 | 2017-04-26 | 湖南农业大学 | Seed spray device and sowing method |
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| Publication number | Publication date |
|---|---|
| CN105284247B (en) | 2017-07-07 |
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