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采用不同年龄的长白落叶松硬枝和嫩枝插穗在全光自动喷雾条件下扦插繁殖,试验结果表明:在长白落叶松扦插繁殖中存在着明显的年龄效应和位置效应,来自于小年龄母株、树冠下部的插穗具有较高的生根能力,2～3年生的插穗生根率均在90%以上;对插穗采用一定浓度和时间的植物激素及稀土化合物处理,将会不同程度地提高扦插生根率;在长白落叶松小北湖种源10年生优良家系的优株中采穗并嫁接,其2年生嫁接苗插穗间生根率差异显著,嫩枝插穗好于硬枝插穗,其中048、072无性系表现最好,嫩枝扦插生根率均达到90%以上;长白落叶松扦插苗移栽的最佳时间为8月中旬;其 ABT 生根粉(3)和稀土化合物处理可提高移栽苗成活率达90%以上。
Using different age of Larix olgensis Larix and twig cuttings in the whole light automatic spray cutting propagation, the results showed that: cutting Larix sibiricus Propagation has significant age effects and location effects from the small-age parent strain , The lower part of the canopy had higher rooting capacity, and the rooting rate of 2 ~ 3-year-old cuttings was more than 90%. The treatment of plant hormones and rare earth compounds with certain concentration and time of cuttings would improve the rooting rate of cuttings to varying degrees ; In the white-lake Larvae North Lake provenances 10-year-old elite strains of the elite plants earning and grafting, the 2-year-old grafted seedlings significantly different between the cuttings, twigs cuttings were better than the hardwood cuttings, 048,072 clones The best rooting rate of shoots reached more than 90%; the best time for transplanting of Larix olgensis seedlings was mid-August; the ABT rooting powder (3) and rare earth compound treatment could improve the survival rate of transplanted seedlings %the above.