Design and Experiment of Row-Controlled Fertilizing–Weeding Machine for Rice Cultivation

Yangjie Shi, Xiaobo Xi, Hao Gan, Xiang Shan, Yifu Zhang, Hui Shen and Ruihong Zhang
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Yangjie Shi: School of Mechanical Engineering, Yangzhou University, Yangzhou 225000, China
Xiaobo Xi: School of Mechanical Engineering, Yangzhou University, Yangzhou 225000, China
Hao Gan: Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN 37996, USA
Xiang Shan: School of Mechanical Engineering, Yangzhou University, Yangzhou 225000, China
Yifu Zhang: School of Mechanical Engineering, Yangzhou University, Yangzhou 225000, China
Hui Shen: School of Mechanical Engineering, Yangzhou University, Yangzhou 225000, China
Ruihong Zhang: School of Mechanical Engineering, Yangzhou University, Yangzhou 225000, China

Agriculture, 2021, vol. 11, issue 6, 1-15

Abstract: Current approaches to topdressing and weeding operations for rice cultivation present several disadvantages, such as poor precision, low efficiency, serious environmental pollution, and so on. This paper presents a row-controlled fertilizing–weeding machine to improve the precision of fertilizing and weeding operations and to reduce the heavy pollution associated with rice cultivation. A proportional–integral–derivative algorithm was adopted to realize accurate fertilization control, and an automatic driving system for agricultural machinery based on BeiDou navigation was used for accurate row-controlled operation. Accuracy testing and field experiments were carried out. The results show that the fertilization control system can stabilize the speed to within 0.55 s of the desired speed with a standard deviation of around 0.32 r·min −1 . The row-controlled operation ensures the lateral deviation is within ± 5 cm at operating speeds below 5 km·h −1 . The high uniformity and accuracy of fertilization meet agronomic requirements and rice cultivation standards, and the weeding performance is acceptable at working speeds below 5 km·h −1 .

Keywords: rice; fertilization; weeding; precision agriculture (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
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