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一、重复杂交重复杂交通常是指新育成的品种或实生苗之间的杂交或者与其他品种的杂交。利用重复杂交的方法能在较短的时期育出生产上需要的
First, repeated crossbreeding Hybridization usually refers to the new breed or seedling between hybrids or hybrids with other varieties. The use of repeated hybridization method can be produced in a short period of time needed to raise