１　高接应整株一次完成　如果每株树只是换接部分分枝，甚至只在大枝基部换接几个小枝，致使树体内养分大量输送给留下的大枝，换接接穗常因养分不足而难以正常萌发，即使萌发也生长缓慢。为提高高接换种成活率，保证按芽快萌发和生长，一株梨树最好一次性改接。对于全园梨树 1 high access to the entire plant completed at a time If each tree is only a part of the exchange of branches, or even only branch branches in exchange for a few twigs, resulting in a large number of nutrients to the tree left behind the transfer of large, replacement scion often due to insufficient nutrients and difficult Normal germination, even if the germination is also slow growth. In order to improve the survival rate of high accession to ensure rapid bud germination and growth, the best one-time pear transformation. For the whole park pear