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过去,用条播机播种时都是用一条起落线,结果造成枕地线处往行与返行的种子不齐(图1),使地头横向播种时无法播齐。
In the past, when sowing with a drill, they used a drop line, resulting in a missing line between the ground line and the return line (Figure 1). This made it impossible to sow the ground when sowing it horizontally.