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利用日本落叶松优树子代2.5年生的幼树、50.5年生优树及9.5年生杂种落叶松优良个体做为采条母树,以河沙、锯末、蛭石为基质,借用长臂旋转扫描喷雾装置,在全光喷雾条件下,扦插半木质化的嫩枝获得成功。2.5年生幼树条扦插生根率达95％以上(6月20日扦插),17个9.5年生杂种落叶松优株条扦插(7月20日),平均生根率,河沙基质为74.31％,锯末基质为68.60％,蛭石基质为51.90％,生根率最高的系达到96.20％,生根率超过70％以上的系占41.18％。扦插基质对生根的影响作用,以河沙为最好。50.5年生的成龄母树条扦插,幼化的干萌条和嫁接后的幼树条扦插,都比没有经过幼化处理的插穗提高生根率。生根素IBA、ABT处理2.5年生幼树条,7月20日扦插,对生根速度有作用,生根素浓度,50ppm比100ppm好,处理50.5年生成龄母树条100ppm比50ppm好。
Using Larix kaempferi 2.5-year-old sapling, 50.5-year-old trees and 9.5-year-old hybrid larch fine individuals as mining mother trees, river sand, sawdust, vermiculite as a substrate, borrow long arm rotating scanning spray device , Under full light spray conditions, the cuttings of semi-lignified shoots succeeded. 2.5 years old young tree cutting rooting rate of more than 95% (June 20 cuttings), 17 9.5-year-old hybrid larch superior tree cutting (July 20), the average rooting rate of 74.31% sand matrix, sawdust The matrix was 68.60%, the vermiculite matrix was 51.90%, the highest rooting rate was 96.20%, and the rooting rate was over 70%, accounting for 41.18%. The impact of cutting matrix on rooting, river sand as the best. 50. 5-year-old Aging tree cuttings, juvenile dry sprout and grafted young tree cutting, than without treatment of cuttings to improve the rooting rate. The rooting hormone IBA, ABT treatment 2.5 year-old young tree, July 20 cutting, the rooting speed has a role, rooting hormone concentration, 50ppm better than 100ppm, processing 50.