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种子批异质性,即种子批内各成分组合在分布上极不均匀一致,没有达到随机分布的要求,在品质特征方面存在明显的差异;也就是说在检验批内的种子各成分没有达到随机分布的状态。由于种子批异质性的存在,即使送验样品是按照规程取得,样品也不会具有代表性。使用这样的检验数据,将会给种子生产者和使用者带来不可估量的损失。1产生异质的原因1.1亲本种子存在差异.一是产地原因。亲本种子来源于不同的生产地点,
The heterogeneity of seed lots, that is, the composition of each component in seed lots is extremely uneven in distribution and does not meet the requirements of random distribution. There are obvious differences in quality characteristics; that is, the components of seeds in the inspection lot have not reached Random distribution of the state. Due to the heterogeneity of seed lots, the samples are not representative even if the samples tested are obtained according to the rules. The use of such test data will bring immeasurable losses to seed producers and users. 1 causes of heterogeneity 1.1 parental seeds there are differences. First, the origin of the reason. Parents of seed from different production locations,