Valentin Marvin T, Pagnas Keithler M, Suclad Roger Lee M, Jasinskas Algirdas, Domeika Rolandas, Šarauskis Egidijus
Department of Agricultural and Biosystems Engineering, College of Engineering, Benguet State University, Km. 5, La Trinidad, 2601, Benguet, Philippines.
Department of Applied Bioeconomy, Wrocław University of Environmental and Life Sciences, 51-630, Wroclaw, Poland.
Heliyon. 2024 Nov 6;10(23):e39605. doi: 10.1016/j.heliyon.2024.e39605. eCollection 2024 Dec 15.
Accurate planting of the required number of carrot seeds is one of the important parameters in developing a carrot seeding device. This study developed a metering mechanism that promotes the deposition of <3 carrot seeds on each planting hill at negligible seed damage. The metering disc and hopper were especifically designed to ensure consistency and uniformity in seed loading into the seed cell and their subsequent efficient discharge onto the planting hills. A key feature of the design is the clearance between the metering disc and the hopper, which was strategically designed to scrape excess seeds from the seed cells, allowing the surplus to freely slide back into the hopper without causing damage. The performance of the seeder was evaluated by examining key parameters, including the number of seeds dropped per hill, scattering index, hill diameter, hill spacing, and missing index across various operating speeds (60, 80, 100, 120, and 140 cm/s). The results demonstrated that the seeder achieved optimal performance at operating speeds between 80-120 cm/s, with an average of 1.70 to 1.81 seeds dropped per hill. Mean hill spacing between hills ranged from 10.98 to 13.50 cm at speeds below 120 cm/s. At a higher speed of 140 cm/s, the mean hill spacing and missing index were 23.06 cm and 53.33 %, respectively. Additionally, the scattering index decreased at a higher operating speed. The developed metering mechanism significantly enhanced the efficiency of the seeder, ensuring precise seed placement and reducing seed wastage across varying operating conditions.
准确播种所需数量的胡萝卜种子是开发胡萝卜播种装置的重要参数之一。本研究开发了一种计量机构，该机构能促进在每个种植穴上落下少于3粒胡萝卜种子，且种子损伤可忽略不计。计量盘和料斗经过专门设计，以确保种子装入种室时的一致性和均匀性，以及随后将种子高效排出到种植穴上。该设计的一个关键特征是计量盘和料斗之间的间隙，该间隙经过精心设计，可刮去种室中多余的种子，使多余的种子自由滑回料斗而不会造成损坏。通过检查关键参数来评估播种机的性能，这些参数包括每个种植穴落下的种子数量、散射指数、种植穴直径、种植穴间距以及在各种运行速度（60、80、100、120和140厘米/秒）下的漏播指数。结果表明，播种机在80 - 120厘米/秒的运行速度下实现了最佳性能，每个种植穴平均落下1.70至1.81粒种子。在速度低于120厘米/秒时，种植穴之间的平均间距在10.98至13.50厘米之间。在140厘米/秒的较高速度下，平均种植穴间距和漏播指数分别为23.06厘米和53.33%。此外，散射指数在较高运行速度下会降低。所开发的计量机构显著提高了播种机的效率，确保了种子的精确放置，并在不同运行条件下减少了种子浪费。
