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guan yu bo zhong ji hua yin qi chang du de wen ti
Pages: 42
Year: Issue:  5
Journal: Farm Machinery

Abstract: <正> 目前,农业机械的田间作业质量已愈来愈受到重视,许多单位制订了田间作业质量标准。播种作业的质量标准里,肯定会有一条关于播种机组来回两趟播幅之间的邻接行距的规定,一般规定与标准行距相比不得超过±3 cm,如有超过处,便要扣减作业费。
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