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一、纯度检验:定级以纯度为主。玉米种子必须严格把好去雄关是确保纯度的关键。收购时是把好纯度的最后一关,根据粒色、粒形及子粒大小、种脐颜色等主要特征进行细致分析。粒色:色泽过深或过浅多数为异品种种子。粒形:不同品种的种子具有不同的粒形,粒形过大或过小不符合本品种形状的为杂粒。种脐颜色:同一品种种子的种脐及
First, the purity test: grading to purity-based. Maize seeds must be strictly controlled to ensure the purity of the key. Acquisition is the last level of good purity, according to the granularity, grain size and particle size, color and other key features of umbilical detailed analysis. Grain color: too dark or too light, most varieties of different varieties of seeds. Granule: Different varieties of seeds have different grain shape, grain size is too large or too small does not meet the shape of the variety of grains. Umbilical color: the same species of seed umbilical and