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目前,农作物种子多凭生产经验和习惯确定质量分级范围和级差。这样,对种子分级参量的选值范围和级差缺乏统一的标准,也不考虑参量的试验和测定误差,所以科学依据性不强,对种子质的问题反映不确切。本文通过对陕西省种子公司近几年收集的主要农作物样本小麦、玉米、水稻、棉花、高粱等的发芽率、净度、纯度进行生物统计,得出以样本平均数和标准差作为各参量的分级依据,既比较科学,又在一定程度上符合当前生产实际。
At present, crop seeds depend on production experience and habit to determine the quality grading range and grade. In this way, there is a lack of uniform standards for the selection range and grade of seed grading parameters, and no consideration of parameter test and measurement error. Therefore, the scientific basis is not strong and the seed quality problems are not reflected accurately. In this paper, the biological statistics of the germination rate, clarity and purity of the main crop samples collected by Shaanxi Seed Company in recent years, such as wheat, corn, rice, cotton, sorghum and so on, are obtained. The average and standard deviation of the samples are taken as the parameters Grading basis, both more scientific, but also to some extent in line with the actual production.