| 摘要 |
The invention is a blade (L) for rotary harrows provided with an additional element comprising a triangular plate (P) provided with two cutting edges (A, B) and a semicentral hole (F) in which the blade (L) is inserted. Said plate (P) is fastened to the blade (L) through welding. The hole (F) provided on the plate (P) has the same size as the blade section, so that once the plate (P) has been applied, it can neither rotate nor slip off. The blade (L) can be successfully used in the preparation of soil before seeding, since the cutting edges of the plate (P) cut the weed roots. |
