Review of designs of cultivators for agricultural care of forest crops

Abstract

The article analyzes the designs of various types of cultivators, which are used to remove unwanted herbaceous and tree-shrub vegetation. Cultivators with disk, rotary, milling and tine working bodies are considered. It is shown that quite a lot of material resources are spent on carrying out agro technical care for valuable forest crops. It is noted that the mechanical method of soil care in the aisles and rows of forest crops has become widespread, despite the high costs. It was found that the rotary cultivators KRL-1M and KBL-1 during their movement cover seedlings up to 15 cm high with soil, and in plants 40-50 cm high and higher, when saddling a row, the apical bud breaks off, the bark is peeled off, side branches break. Damage to forest crops is about 8%. Damage and destruction of cultivated plants by the KRT-3 cultivator is 30%, and by the KFL-1.4 cultivator - 43%. Cultivator KRT-3 has low reliability. When meeting with stumps, the racks of the working bodies and wheels are deformed, and the paws are often broken. The milling cultivator KFL-1.4 also has low operational reliability.