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在营建无性系林木种子园的过程中,如果不掌握影响无性系嫁接成活,影响无性系嫁接苗生长和影响无性系植株结实等因素,将直接影响到种子园的建园速度和种子产量,本文就有关影响华北落叶松及油松无性系嫁接植株在生长发育过程中的几个因素做一简单分析。一、影响无性系(接穗)成活的因素 1、嫁接时间:当砧木的芽开始膨胀、树液开始流动时,砧木形成层的分生能力最强,有利于形成愈伤组织,成活率较高,根据我园多年的实践经验证明,本地区嫁接落叶松和油松在4月中
In the process of establishing clonal forest seed orchard, if we do not master the factors that affect clonal survival of clones, affect the growth of clonal seedlings and affect the clonal growth of clones, it will directly affect the speed and yield of seed garden. A simple analysis of several factors affecting the growth and development of clonal plantations of Larix principis-rupprechtii and Pinus tabulaeformis was carried out. First, the factors that affect the survival of clones (scion) 1, grafting time: When the rootstock buds began to swell, the sap flow began to flow, the rootstocks forming the strongest ability of meristem, is conducive to the formation of callus, a higher survival rate , According to my garden many years of practical experience has proved that the region grafted larch and Pinus in April