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Development and Experimentation of Intra-Row Weeding Device for Organic Rice

Author

Listed:
  • Jinkang Jiao

    (College of Engineering, South China Agricultural University, Guangzhou 510642, China
    School of Intelligent Engineering, Shaoguan University, Shaoguan 512005, China
    Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China)

  • Lian Hu

    (College of Engineering, South China Agricultural University, Guangzhou 510642, China
    Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China)

  • Gaolong Chen

    (College of Engineering, South China Agricultural University, Guangzhou 510642, China
    Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China)

  • Chaowen Chen

    (College of Engineering, South China Agricultural University, Guangzhou 510642, China
    Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China)

  • Ying Zang

    (College of Engineering, South China Agricultural University, Guangzhou 510642, China
    Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
    Key Laboratory of Key Technology on Agricultural Machine and Equipment, Ministry of Education, South China Agricultural University, 483 Wushan Road, Guangzhou 510642, China
    Guangdong Provincial Key Laboratory of Agricultural Artificial Intelligence (GDKL-AAI), Guangzhou 510642, China)

Abstract

Weeds in paddy fields can seriously reduce rice yield. An intra-row weeding device with double-layer elastic rods was designed, considering the differences in mechanical properties between rice and weeds, which can press weeds into the soil and avoid damaging rice. The elastic force of the elastic rods can be adjusted by changing the position of the regulating mechanism to adapt to different weeding conditions. A measurement experiment was conducted to determine the variation rule of elastic force. The quadratic orthogonal rotation combination discrete element simulation experiment, which used weeding depth and weeding speed as experimental factors, and the amount of soil disturbance and the force of the inner and outer elastic rod in the horizontal and vertical directions as experimental indicators, was conducted to study the interaction between the weeding device and the soil. The optimal weeding parameters were obtained: the weeding depth was 15 mm, the weeding speed was 0.9 m/s. The field experiment, which used the various parameters of the weeding device as experimental factors and the weeding rate and damaging seedling rate as experimental indicators, was conducted to determine the weeding effect. The experimental results showed that the optimal position of the regulating mechanism was 270 mm, with a weeding rate of 80.65% and a damaging seedling rate of 3.36%. The weeding rate can be increased by at least 11.18% by adjusting the regulating mechanism to a suitable position under the same weeding conditions. This study can provide a reference for research on weeding machinery for organic rice.

Suggested Citation

  • Jinkang Jiao & Lian Hu & Gaolong Chen & Chaowen Chen & Ying Zang, 2024. "Development and Experimentation of Intra-Row Weeding Device for Organic Rice," Agriculture, MDPI, vol. 14(1), pages 1-18, January.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:1:p:146-:d:1322100
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