| 摘要 |
The applied soil-cultivation agricultural implement comprises the front row of shallow concave disk knives, which has the front right area and the front left area, arranged symmetrically as regards to the central line of the implement. The rear row of the shallow concave disk knives has the rear right area and the rear left area arranged symmetrically as regards to the central line of the implement. The rear right area follows behind of the front right area along the right driving lane. The rear left area follows behind the front left area along the left driving lane, when the implements are moved across the field. The implement has none tool entering into impingement with soil on the right driving lane between the front right area and the rear right area, and none tool entering into impingement with soil on the left driving lane between the front left area and the rear left area. The shallow concave disk knives have a concavity of approximately from 1.25 to 1.69 inches at the outer diameter, which is equal to approximately 20 inches. The front left area and the front right area and/or the rear left area and the rear right area, arranged at an angle, which is approximately equal to 18 degrees as regards to the line perpendicular to the central line. |
