关键词: 有机肥, 甘蔗, 排肥装置, 排肥性能, 田间管理机械

Abstract: Mechanized organic fertilizer discharge device in sugarcane field is one of the effective fertilization methods to solve the problem of fertilizer arch, uneven fertilizer discharge and cost reduction during sugarcane planting and fertilization. Combined with the physical characteristics of organic fertilizer such as moisture content and viscosity, mechanical analysis of organic fertilizer particles in the fertilizer box and guide tank, Jenike theory and critical conditions of static and arch of fertilizer particles were used to analyze the rotation speed of the spiral shaft of the fertilizer discharge mechanism and calculate the size of the fertilizer discharge port. In addition, SolidWorks was used to conduct threedimensional modeling of the organic fertilizer spiral drainage device, carry out force analysis on the key structural components, simulate the strength and stiffness of the core connector, optimize the structure of the fertilizer drainage device, and conduct prototype trial production, and coupling electromagnetic field on the fertilizer guide and drainage mechanism of the prototype, and verify the performance of organic fertilizer drainage through field experiments. The tests showed that the forward speed was 0.25m/s, the rotation speed of spiral blade was 1.55r/s, the electromagnetic vibration frequency was 45.5Hz, the continuous rate of fertilizer discharge was 86.14%, the arch phenomenon of fertilizer discharge box was reduced, and the fertilization technology level of organic fertilizer discharge device in sugarcane mechanized planting was improved. It is of great significance to promote the further popularization and application of mechanization fertilization technology of organic fertilizer.

Key words: organic fertilizer, sugarcane, fertilizer discharge device, fertilizer discharge performance, field management machinery