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2 .3 杨、柳树苗圃化学除草技术2 .3.1 杨、柳树苗木的种类杨、柳树苗木按其所培育的苗木用途、分为扦插苗、留根苗和大苗。(1)扦插苗 选取充分木质化的 1年生种条 ,剪取长 12～ 15ｃｍ的插穗扦插育苗。所培育出 1年生的苗木、苗根用于秋季或第 2年春季造林 ,地径 1ｃｍ以上
2.3 Poplar and Willow Tree Nursery Weeding Technology 2.3.1 Types of Poplar and Willow Seedlings Poplar and willow seedlings are classified into cutting seedlings, remaining root seedlings and large seedlings according to their uses. (1) cutting seedlings selected lignin full of 1-year-old species, cut 12 ~ 15cm cutting cuttings nursery. The nursery stock of 1-year-old nursery stock is used for afforestation in the spring or autumn of the second year with a diameter of 1cm or more