Influence of Shaped Hole and Seed Disturbance on the Precision of Bunch Planting with the Double-Hole Rice Vacuum Seed Meter
Author:
Qian Cheng12ORCID, He Siyu12, Qin Wei12, Jiang Youcong12, Huang Zishun12, Zhang Meilin12, Zhang Minghua12345, Yang Wenwu12345, Zang Ying12345
Affiliation:
1. Guangdong Laboratory for Lingnan Modern Agriculture, College of Engineering, South China Agricultural University, Guangzhou 510642, China 2. Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, Guangzhou 510642, China 3. Guangdong Provincial Key Laboratory of Agricultural Artificial Intelligence (GDKL-AAI), Guangzhou 510642, China 4. Maoming Branch, Guangdong Laboratory for Modern Agriculture, Maoming 525000, China 5. Huangpu Institute of Innovation, College of Engineering, South China Agricultural University, Guangzhou 510642, China
Abstract
The double-hole rice vacuum seed meter is critical equipment for the planting precision of rice direct seeding. The effects of shaped holes and seed disturbance on the precision of rice bunch planting were investigated to improve the precision of bunch planting with the double-hole rice vacuum seed meter. A test bench with the rice vacuum seed meter was set up to analyze the trends in the quality of feed index, miss index, and multiple index of seed meters with different shaped holes at different speeds and vacuum pressures. Based on the optimal hole structure, different seed disturbance structures were designed to investigate the influence of the seed disturbance structure on the precision of bunch planting. A multiple linear regression model was established for the relationship between the disturbance structure, vacuum pressure, rotational speed, and the precision of bunch planting. Discrete element numerical simulation experiments were carried out to analyze the effect of disturbance structures on seeds. The planting precision of the seed meter with the shaped hole was significantly higher than that of the seed meter without the shaped hole while the shaped hole B was the optimum structure. Disturbance structure affects the quality of feed index, multiple index rate, and miss index. The planting precision of the seed disturbance structure II was better than the other structures. At a speed of 60 rpm and vacuum pressures of 2.0 kPa, 2.4 kPa, and 2.8 kPa, the qualities of feed index of seed disturbance structure II were 90%, 91.11%, and 89.17%, respectively, and the miss indexes were 2.96%, 1.94%, and 1.57%, respectively. At high rotational speeds, the precision of rice bunch planting with the seed disturbance structure is better than that without the seed disturbance structure. In the simulation test, the seed velocity and total force magnitude of the meter without disturbance structures were less than those with the disturbed structure. Simulation experiments showed that the seed disturbance structure breaks up the stacked state of seeds. Research has shown that the shaped hole holds the seed in a stable suction posture, which helps to increase the seed-filling rate. Seed disturbance improves seed mobility, thereby enhancing the precision of bunch planting.
Funder
Guangdong Province Key Field Research and Development Program National Natural Science Foundation of China Guang Dong Basic and Applied Basic Research Foundation China Agriculture Research System for rice CARS-01 and the Laboratory of Lingnan Modern Agriculture Project
Reference32 articles.
1. Review of precision rice hill-drop drilling technology and machine for paddy;Zhang;Int. J. Agric. Biol. Eng.,2018 2. Lower global warming potential and higher yield of wet direct-seeded rice in Central China;Tao;Agron. Sustain. Dev.,2016 3. Li, H., Zhao, C., Yan, B., Ling, L., and Meng, Z. (2022). Design and Verification of the Variable Capacity Roller-Wheel Precision Rice Direct Seed-Metering Device. Agronomy, 12. 4. Li, H., Zeng, S., Luo, X., Fang, L., Liang, Z., and Yang, W. (2021). Design, DEM Simulation, and Field Experiments of a Novel Precision Seeder for Dry Direct-Seeded Rice with Film Mulching. Agriculture, 11. 5. Dry direct-seeded rice as an alternative to transplanted-flooded rice in Central China;Liu;Agron. Sustain. Dev.,2015
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