Authors

Abstract

Considering the problems of current intertillage deep fertilizer applicators such as insufficient topdressing depth and poor adaptability in ridge forming, this paper designs a 3ZFS-520 intertillage deep fertilizer applicator by making some improvements to the deep application shovel and hiller. With a lengthened and narrowed deep application shovel and optimized penetration angle, clearance angle and curvature radius, this applicator experiences reduced working resistance and soil disturbance while increasing the fertilizing depth, and has enhanced adaptability in ridge forming and achieves better ridge forming effects through the integration of the hilling shovel and the hiller with adjustable extent. Test results show that, the 3ZFS-520 intertillage fertilizer applicator can reach a fertilization depth of 20cm with good ridge forming effects, strong applicability and adaptability, and stable working performance, and thus can meet the requirements set by the national standard.

Abstract in Chinese

针对现有中耕施肥机追肥深度不足和起垄适应性差的问题，研制了3ZFS-520型中耕深施肥机，并就深施铲和培土器进行了改进设计。采用增加深施铲长度、减小深施铲宽度，优化入土角、入土隙角和曲率半径的方法解决了在增加施肥深度的同时降低工作阻力和土壤扰动量的问题；采用培土铲和张度可调的培土器相结合的方式增加起垄适应性并提高起垄效果。经试验测试，3ZFS-520型中耕深施肥机各项作业性能指标满足国家标准要求，通用性及适应性强，施肥深度可达20cm，起垄效果好，作业性能稳定