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小麦机播时,要求(理论)的播量与实际的播量的差别。叫误差。误差的形成有三种原因。一是机械原因,即播种机械尤其是排种机构,对控制下种量出现误差:二是种子原因,由种子的物理性状(长、高、宽)的不同.下种时种子流出不同,出现误差;三是田间误差,在田间播种时地面状况、土壤干湿、土地硬软程度、作业速度等。三种误差中,机械误差可通过选用高质量的播种机来减少,种子误差用提高种子整齐度的办法来降低,本文仅就田间误差涉及的一些问题进行剖析,以便在工作中参考。
Wheat machine broadcast, the demand (theory) and the actual amount of sowing the difference. Called error. There are three reasons for the error. First, the mechanical reasons, that is, sowing machinery, especially the planting mechanism, the amount of error under control: the second reason is the seed, the seeds of the physical properties (length, height, width) Error; Third, the field error, the ground conditions in the field sowing, soil wet and dry, hard and soft land, operating speed and so on. Among the three kinds of errors, the mechanical error can be reduced by selecting high-quality planters, and the seed error can be reduced by improving the uniformity of seeds. In this paper, only some problems involved in field errors are analyzed for reference in work.