用DMUAI广义线性混合模型估计死胎、木乃伊的育种值，固定效应值，进一步估计遗传力。

Using generalized linear mixed model DMUAI estimated stillbirth and mummy's breeding values, values of fixed effects, and further estimated stillbirth and mummy's heritability.

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实践中形成的改良混合选择法是把自交、单株选择、混合留种三种常规的育种方法有机地结合起来，使之成为育种过程中的3个步骤。

The modified method of mixing selection comes from practice. It gangs 3 breeding methods as self-cross and plant selection and mixing save seeds together, and forms 3 paces in the course of breeding.

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