Design and experiment of a control system for sweet potato seedling feeding and planting device based on pretreatment seedling belt

He, Yufan; Zhu, Quing; Fu, Weiqiang; Luo, Changhai; Ye, Cong; Qin, Wuchang; Zhang, Meng; Chen, Liping; Zhao, Chunjiang; Wu, Guangwei

doi:10.4081/jae.2022.1261

Cited by 4 publications

(6 citation statements)

References 20 publications

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“…The seedling stage is too long after transplanting due to the damage to the pot body and the root system. The matrix loss rate should be less than 15% to meet the transplanting conditions [29,30]. The percentage of matrix loss (K) characterizes the percentage of post-transplanted quality of plug seedlings compared to the substrate quality before transplanting [31], which is a criterion for judging the degree of damage to the pot.…”

Section: Single-factor Experimental Methodsmentioning

confidence: 99%

Study on Contact Stress Distribution Characteristics and Damage of Plug Seedlings Based on Flexible Pressure Sensor

Cui,

Li,

Zeng

et al. 2023

Sensors

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At present, there is a problem that the growth quality is reduced due to damage to the plug seedling pot during the transplanting process. In this study, the pressure distribution measurement system was used to measure the contact area of plug seedlings when they collided with the ground. The effects of seedling age and forward speed on the characteristics of contact stress distribution and potting damage were investigated through a single-factor experiment. The results were comprehensively considered based on the single-factor test, and the Box–Behnken test was used to optimize the design. The matrix loss rate was used as the evaluation index to determine the optimal parameter combination for transplanting: the tray specification was 72, the seedling age was 30 d, and the forward speed was 1.25 km·h−1. This study can provide a reference and technical support for further research on pot damage in plug seedling transplanting. The optimized parameters can provide practical guidance for reducing pot damage and improving growth quality during transplanting plug seedlings.

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Section: Single-factor Experimental Methodsmentioning

confidence: 99%

Study on Contact Stress Distribution Characteristics and Damage of Plug Seedlings Based on Flexible Pressure Sensor

Cui,

Li,

Zeng

et al. 2023

Sensors

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“…Using Recurdyn multibody dynamics software and MFBD technology, the flexible model of sweet potato seedlings can be established through the coupling calculation of finite element flexible body and multibody dynamics [46]. To make the flexible sweet potato bare seedling model have similar physical characteristics to the actual sweet potato seedlings, the physical parameters of the sweet potato bare seedlings were set by consulting the relevant literature [47]. The shear modulus was 18.68 MPa, the Poisson's ratio was 0.3, and the density was 1132.2 kg/m 3 .…”

Section: Edem and Recurdyn Co-simulationmentioning

confidence: 99%

“…The planting depth and planting posture of sweet potato during horizontal transplanting are crucial factors that directly impact the yield and quality of the crop [16]. Planting sweet potato at a depth of more than 70 mm allows the crop to effectively absorb water from the soil, thereby improving its drought resistance [17]. On the other hand, planting sweet potato at a depth less than 50 mm can weaken its drought resistance and increase seedling mortality.…”

Section: Introductionmentioning

confidence: 99%

Optimized Design and Experiment of a Self-Covering Furrow Opener for an Automatic Sweet Potato Seedling Transplanting Machine

Wu,

Wang,

Zhang

et al. 2023

Sustainability

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The yield and quality of sweet potatoes are significantly influenced by the transplantation posture of sweet potato seedlings. The performance of the sweet potato seedling transplanting opener directly affects the transplantation posture of sweet potato seedlings. In order to improve the yield and quality of sweet potatoes, this study proposes a joint simulation method based on discrete element and flexible multi body dynamics (DEM-FMBD), which optimizes the structure of a self-covering soil opener. By exploring the influence of self-covering soil trenchers on the planting depth and posture of sweet potato seedlings during horizontal transplantation, it was determined that the influencing factors of the experiment were wing spacing, soil reflux height, and soil reflux length. Based on the DEM-FMBD coupling simulation platform, single factor, and quadratic rotation orthogonal experiments were carried out. According to the results of the simulation test, the effect of the interaction of test factors on planting depth and planting attitude was analyzed by the response surface method. Finally, the optimal structural parameter combination was obtained by a multi-objective optimization method: the spacing of the wings was 58 mm, the height of the soil backflow port was 71 mm, and the length of the soil backflow port was 163 mm; thus, the quality of transplanting is improved effectively. This study provides the method and theory reference for the study of sweet potato transplanting.

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“…According to the agronomic requirements that are described in Section 2.1, the following agronomic parameters were used in the design of the mechanism: the theoretical submerged depth of the nodes in the middle of the seedling was 50 mm, while the theoretical depth of the seedling's root was 25 mm. The constraint condition for the radius of the arc-shaped gripping rod was given by Equation (1). Let x represent the radius of the rotation of the gripping mechanism and set α + β represent the angle that is occupied by the arc that is formed when the sweet potato seedlings are buried in the soil.…”

Section: Structural Design Of Clamping Mechanismmentioning

confidence: 99%

“…Sweet potato is an important food in China, and sweet potato cultivation is an important part of the sweet potato industry. Farmers plant sweet potatoes using methods that employ straight [1], oblique [2], flat [3], boat-bottom-shaped [4], and pressed rattan devices [5]. According to Li [6], Wu [7], and other researchers, the planting method that uses the boat-bottom-shaped device has the highest yield of all five transplanting methods that have been tested in the field.…”

Section: Introductionmentioning

confidence: 99%

Design and Experiment of Sweet Potato Up-Film Transplanting Device with a Boat-Bottom Posture

Pan

et al. 2022

Agriculture

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Aimed at solving the problem of the incidence of large film-breaking holes in the current sweet potato boat-bottom-shaped transplant, a boat-bottom-shaped up-film transplanting device was designed. Starting from the agronomic requirements of sweet potato up-film transplanting with a boat-bottom posture, an arc-shaped gripping mechanism was designed. In order to avoid further tearing and breaking the film hole during the movement of the clamping mechanism under the membrane, a transposition mechanism and a positioning cam were designed to jointly control the movement of the clamping mechanism. In order to ensure the stability of the transplanting plant spacing during the operation of the machine, a rotary encoder was used to collect the forward speed of the machine and adjust the speed of the power shaft in real time. Field experiments were carried out in order to verify the reliability and stability of the operation of the above-mentioned design mechanism. In the field test, the advance speed was used as the test factor, and the test indexes included three indexes of the seedlings after transplanting and three indexes of the film holes. The test results showed that the qualified rate of node depth in the middle of the seedling (QRNDMS) is between 95.67% and 86.79%, the qualified rate of root depth at the base of the seedlings (QRRDS) is between 94.00% and 90.11%, and the qualified rate of seedling length into the soil (QRSLS) is between 97.89% and 91.67%. The film hole spacing is between 240.33 mm and 245.32 mm, the film hole length is between 37.01 mm and 42.10 mm, and the film hole length variation rate is between 1.05% and 7.48%. This study can serve as a reference for up-film transplantation, particularly for boat-bottom-shaped up-film transplantation devices.

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Design and experiment of a control system for sweet potato seedling feeding and planting device based on pretreatment seedling belt

Cited by 4 publications

References 20 publications

Study on Contact Stress Distribution Characteristics and Damage of Plug Seedlings Based on Flexible Pressure Sensor

Study on Contact Stress Distribution Characteristics and Damage of Plug Seedlings Based on Flexible Pressure Sensor

Optimized Design and Experiment of a Self-Covering Furrow Opener for an Automatic Sweet Potato Seedling Transplanting Machine

Design and Experiment of Sweet Potato Up-Film Transplanting Device with a Boat-Bottom Posture

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