Experimental Study on Combined Operation of Drilling and Subsoiling for No-till Maize

摘要

Abstract. In two crops a year region of northern China, no-tillage seeding and subsoiling are completed solely, which causes the problems such as more tasks, compacting the soil, increment of power consumption, speeding the growth of no-tillage maize. Aiming at above problems and combining with actual instance of two crops a year region of northern China, this paper advances design scheme of drilling and subsoiling combined machine for no-tillage maize which can be used in two crops a year region of northern China. The combined machine can once complete all field works of pushing aside the stalk, ditching, fertilizing, seeding, covering the soil, squashing the soil and subsoiling, solving the problems which are caused by sole operation of no-tillage and subsoiling, accelerating the growth of maize. The paper advanced design scheme of subsoiling structure and detailedly introduces no-tillage seeding structure of the combine machine. Field results show that all the key parts' structures are reasonable, the overall bearing force and power distribution of the machine meet the design need. A series of contrastive tests between combine and sole operation of drilling and subsoiling are set up. Field tests make out that the combine operation of drilling and subsoiling is feasible technically, through using different loosen soil shovels, the combine machine can meet varied demands of subsoiling.