Development and test of an air-suction type precision direct seeding machine for pepper

ZENG Shan; YAO Lamei; LI Ning; YANG Yukun; HUANG Dengpan; FANG Longyu; MO Zewen

doi:10.7671/j.issn.1001-411X.201906012

Journal of South China Agricultural University > 2020 > 41(3): 102-109. > DOI: 10.7671/j.issn.1001-411X.201906012

ZENG Shan, YAO Lamei, LI Ning, et al. Development and test of an air-suction type precision direct seeding machine for pepper[J]. Journal of South China Agricultural University, 2020, 41(3): 102-109. DOI: 10.7671/j.issn.1001-411X.201906012

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Development and test of an air-suction type precision direct seeding machine for pepper

1.
College of Engineering, South China Agricultural University/Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, Guangzhou, 510642, China
2.
Guizhou Mountain Agricultural Machinery Research Institute, Guiyang 550001, China

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Received Date: June 05, 2019
Available Online: May 17, 2023

Abstract

Abstract

Objective
To solve the problems of high cost, high labor intensity and low production efficiency in pepper planting, seeding and transplanting, an air-suction type precision direct seeding machine for pepper was developed considering pepper planting pattern and agronomic requirements in south area.

Method
The machine consists of a main frame, a copying mechanism, a fan, a transmission system, a derailleur, an air-suction seed device, a ditching device and a pressing device, which can complete the ditching, seeding, soil covering and pressing operations at one time. The seed metering machine uses the principle of taking seeds by negative pressure and discharging seeds by breaking pressure. According to the seeding requirements and physical characteristics of pepper seeds, the size of seeding plate, the number and size of seeding holes were determined. Sowing precision and quantity requirements were ensured. The seeding part is connected with the main frame by a parallel four-bar copying mechanism, so as to realize the ground copying of the seeding monomer and ensure the ditching and seeding depth.

Result
Field test results showed that the average qualified rate of 1−3 grains/hole was 91.16%, the average leakage seeding rate was 0.18%, and the average repeat seeding rate was 8.66%. In tests of different hole distances, qualified rates for different hole distances were above 89%, the repeat rate was below 4.85%, the leakage seeding rate were below 11%, the coefficients of variations of the hole distances were below 23.77%, and the qualified rate of seeding depth was 86%.

Conclusion
The working performance of the whole machine meets the requirements for pepper planting. This research can provide a reference for the research and development of precision vegetable seeders.
- air-suction type,
- precision direct seeding machine,
- pepper,
- design and test

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References (30)

References

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MO Zewen

1.
College of Engineering, South China Agricultural University/Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, Guangzhou, 510642, China

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Development and test of an air-suction type precision direct seeding machine for pepper