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为了培育优良杨树苗木,在田间管理中,应搞好苗木的定株与摘芽两项作业。一、苗木的定株当萌条高度达到15～25厘米左右时,就要进行定株作业。每亩定株的数量,要根据育苗的目的来确定。定株作业时,要去弱留壮。以采条为目的的苗木,每个萌条上要保留健壮枝条2～5个;以培育高干大苗为目的的苗木,每株只保留1个位置正、生长健壮的枝条,其余
In order to cultivate good poplar seedlings, field management, seedlings should be done Dingzhu and pick bud two operations. First, the seedlings of Stubbs when the sprouts height reached 15 to 25 cm or so, it is necessary for Strain operations. The number of plants per acre, according to the purpose of nursery to determine. Strain operation, going weak to stay strong. In order to collect the seedlings for the purpose of each sprigs to keep robust branches 2 to 5; to nurture high-dried seedlings for the purpose of nursery stock, leaving only one position per plant is positive, strong growth of branches, the rest