Design of High-Efficiency Soil-Returning Liquid Fertilizer Deep-Application Furrow Openers for Improving Furrowing Performance in Cold Regions of Northeast China

Wenqi Zhou, Chao Song, Xiaobo Sun, Ziming Liu, Xue Ni, Kangjia Shen, Yi Jia Wang () and Liquan Tian
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Wenqi Zhou: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Chao Song: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Xiaobo Sun: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Ziming Liu: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Xue Ni: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Kangjia Shen: College of Engineering, Northeast Agricultural University, Harbin 150030, China
Yi Jia Wang: Department of Industrial and Manufacturing Systems Engineering, The University of Hong Kong LG-108, Composite Building, Pokfulam Road, Hong Kong SAR 999077, China
Liquan Tian: Key Laboratory of Crop Harvesting Equipment Technology of Zhejiang Province, Jinhua Polytechnic, Jinhua 321007, China

Agriculture, 2022, vol. 12, issue 9, 1-21

Abstract: Liquid-fertilizer deep-application techniques are techniques for applying fertilizers to the root system of crops, which can effectively improve the utilization rate of fertilizers and reduce application amounts. Due to the soil viscosity of soils in the cold region of Northeast China, the soil return rate of furrow openers for liquid-fertilizer deep applications is low, which can easily cause excessive volatilizations of liquid fertilizers. Therefore, aiming at the operational requirements of low soil disturbance for liquid-fertilizer furrowing and deep applications, an efficient soil-returning liquid-fertilizer deep-application furrow opener was innovatively designed based on soil characteristics during the inter-cultivation period in the cold region of Northeast China. The discrete element method (DEM) was used to analyze the operating performance of the high-efficiency soil-returning liquid-fertilizer deep-application furrow openers, which is determined by key operating parameters including width and slip cutting angle. The DEM Virtual Simulation Experiment results show that the optimal combination is the width of 37.52 mm and a slip cutting angle of 43.27°, and the test results show that the optimal performance of the high-efficiency soil-returning liquid-fertilizer deep-application furrow opener is that the soil disturbance rate is 51.81%, and the soil-returning depth is 52.1 mm. This paper clarifies the relationship between the width and the slip cutting angle in furrowing resistance and soil disturbance and the mechanism by which the width and slip cutting angle affect soil disturbance. Above all, this study provides a theoretical and practical reference for the design of liquid-fertilizer deep-application furrow openers.

Keywords: highly efficient soil return; liquid fertilizer deep application technique; DEM; soil bin test (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: 2022
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