开沟器的任务包括开沟、导种和覆土。 设计开沟器时要求: 1.开沟时沟底平整,保证苗带宽度,并应使播深一致。 2.条播时,种子被导种入土后,应分布均匀。 3.覆土时,应使细湿土紧靠种子,且应将种子全部覆盖。 The opener’s tasks include ditching, guiding and casing. When designing opener requirements: 1. When ditching ditch flat, to ensure seedling width, and should make sowing consistent. 2 broadcast, the seeds were introduced into the soil should be evenly distributed. 3. Cover soil, soil should be close to the wet seed, and the seeds should be fully covered.