1BQX—1.3/1.5/1.9/2.1/2.7 suspension middle-duty disc harrow with 14 or 16 or 20 or 22 or 28 blades is suitable for pulverizing and loosening clods after plowing and for planning the land before sowing. On cultivated land, it can make soil and fertilizer mix up and clear away the stump of plants.The harrow is simple in construction, durable in service, ready to operate, easy to maintain and efficient in pulverizing and penetrating into the soil and leaves the land with smooth, even surface. All these satisfy the agricultural requirements of intensive cultivation.