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毛白杨育苗在插穗扦插后,加强苗木的抚育管理,是保证苗木优质丰产的关键。只有加强扦插苗木不同发育阶段的抚育管理,才能培育出1年生毛白杨的优质壮苗。毛白杨插穗从扦插后到成为1年生苗木,这期间的抚育管理大致可分为苗木自养期、苗木分化期、生长缓慢期(根系生长期)、苗木速生期、苗木发育充实期、苗木休眠期6个时期,不同的生长发育期有不同的抚育措施。1.苗木自养期。毛白杨插穗从扦插到新梢开始出现封顶为止的一段时期为苗木自养期。此期插穗新根的形成和生长,主要依靠插穗本身内部的营养物质的储藏和水分的供应。春季扦插的基部插穗发芽较晚、生根较早、自养时间较长、成活率较
Populus nursery nursery cuttings cuttings, strengthening nursery nursery management, is to ensure the key high-yield seedlings. Only to strengthen the nurturing and management of different stages of cutting seedlings in order to cultivate 1 year old poplar high quality seedlings. Populus cuttings from cuttings to become a one-year-old seedlings, tending during this period can be divided into seedling autotrophic period, seedling differentiation period, slow growing period (root growth period), rapid growth of seedlings, seedling development, seedling dormancy Period 6 periods, different growth and development of different tending measures. 1. Seedling self-support period. Populus cuttings from cuttings to shoots began to cap until some period of seedling autotrophic period. During this period, the formation and growth of new roots of cuttings depend mainly on the storage of nutrients inside the cuttings itself and the supply of moisture. The root cuttings of the spring cuttings germinated later, rooting earlier, autotrophic longer, more survival rate