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1耕深调整采用高度调整的悬挂犁,提高限深轮的高度则增加耕深;反之则减小耕深。当犁达到预定耕深时,要求限深轮有适当的土壤支撑反力。采用力调节的悬挂犁,其耕深由拖拉机液压系统自动控制。阻力增加时,上拉杆的压力增加,耕深自动变浅;反之,耕深自动增加。当土壤比阻不变时,改
1 tillage adjustment using height adjustment of the hanging plow, raising the depth of limit wheel increases the depth of cultivation; otherwise reduce the depth of cultivation. When the plow reaches a predetermined depth of cultivation, it is required that the depth limit wheel have an appropriate soil support reaction force. Adjustable suspension plows are used and their depth of field is automatically controlled by the tractor hydraulic system. When the resistance is increased, the pressure on the pull rod increases and the depth of the soil automatically becomes lighter; on the contrary, the depth of the cultivation increases automatically. When the soil resistance than the same time, change