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一、抽样 一批种子,由于数量大,各粒种子在大小、轻重、饱满程度,机械损伤以及病虫害感染方面,都存在差异,同时还杂有种种夹杂物。由于自然分级的作用,这批不同质量的种子粒及夹杂物不可能均匀地分布在种子堆中。要使种子检验的结果符合这批种子的实际情况,必须根据随机的原则,按照一定的抽样程序进行抽样,取得具有代表性的样品进行检验,才能得到这批种子质量的数据,
First, sampling a group of seeds, due to the large number of seeds in each of the size, severity, fullness, mechanical damage and pest infections, there are differences, but also mixed with all kinds of inclusions. Due to the natural grading effect, these seeds and inclusions of different quality can not be uniformly distributed in the seed pile. In order to make the result of seed test accord with the actual situation of these seeds, we must carry out sampling according to random principle, according to a certain sampling procedure and obtain representative samples for testing to obtain the data of seed quality,