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梨苗繁育,通常采用移栽砧木苗和梨籽直播育苗法。前者成本高,费工时;后者必须断根才能培育出合格苗木,否则培育出
Pear breeding, usually using transplanting stock and pear seedling live nursery method. The former is costly and time-consuming; the latter must be cut in order to breed qualified seedlings, otherwise nurture