【摘 要】
：
笃斯越桔因其丰富的营养价值、商用价值及潜在的药用价值,具有广阔的开发利用前景。目前可以通过种子、扦插、组培等方式进行繁殖,扦插繁殖作为一种重要的繁殖手段,可以作为
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笃斯越桔因其丰富的营养价值、商用价值及潜在的药用价值,具有广阔的开发利用前景。目前可以通过种子、扦插、组培等方式进行繁殖,扦插繁殖作为一种重要的繁殖手段,可以作为其它繁殖方式的一种补充。本研究以长白山笃斯越桔两年生实生苗为试材,研究了不同基质及激素处理对笃斯越桔嫩枝扦插生根的影响。另外,笃斯越桔苗木生长速度较慢,鲜有施肥方面的报道,本研究对笃斯越桔苗期的施肥措施进行了初步探索。试验结果如下：1、以草炭土为基质时生根质量和生根率均最高,分别达到90.0%和0.98；其次为草炭土：珍珠岩(6：1),生根率为83.3%,生根质量为0.94。2、以低浓度生长素浸泡处理笃斯越桔嫩枝插穗,各处理的生根率和生根质量均显著高于对照,IBA浓度为200 mg·L-1时,生根率最高,为66.6%,生根质量也最高,为0.99；以高浓度生长素速蘸处理笃斯越桔嫩枝插穗,浓度为1000 mg·L-1的NAA生根率最高,达到了76.6%,用浓度为500 mg·L-1的生根粉处理时,生根质量最高,为了0.91；在生产中建议采用500 mmg·L-1的生根粉作为生根剂,其生根效果较好,且成本较低。3、不同浓度木醋液及优聪素叶面喷施处理均可促进苗木生长,喷施400倍木醋液时苗木株高和叶片数显著高于其它处理,且长势较好；叶面喷施优聪素的最适宜浓度为800倍。4、采用3414试验设计,根据计算得出笃斯越桔苗期施肥措施为：施纯N 83～90kg·ha-1,纯P2O514～21 kg·ha-1,纯K2O3～6kg·ha-1,苗木株高≥12cm；且氮的贡献率最大,磷的贡献率略低于氮,钾的贡献率最小。
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