七叶树绿枝扦插育苗技术

七叶树ＡｅｓｃｕｌｕｓｃｈｉｎｅｎｓｉｓＢｕｎｇｅ原产我国黄河流域 ,属亚热带及温带树种 ,喜温暖湿润的气候 ,较耐寒 ,耐半荫 ,深根性 ,畏酷热。在山东泰安引种的七叶树 ,已有 2 0～ 30年的树龄 ,树高 8～ 15ｍ ,胸径 10～ 2 0ｃｍ ,抗病、虫能力较强。该树种根深叶茂 ,树形优美 ,是城市绿化和庭院绿化的重要树种 ,在山东有良好的发展前途。但由于种子少 ,插条极难生根 ,限制了它的发展。因此 ,我们于 2 0 0 1年利用当年生苗进行了七叶树的绿枝扦插试验 ,即利用ＡＢＴ1号 0 .1%溶液速沾插条 ,生根率达 6 5 % ,当年生苗高 8ｃｍ ,获得较…     

金焰绣线菊绿枝扦插育苗技术

金焰绣线菊（Spiraeaxbumaldacv．Goldfiame），小灌木，株高０．４～０．６m，冠幅０．７～０．８m。新梢顶端幼叶红色，下部叶片黄绿色，叶卵形至卵状椭圆形，长４cm，宽１．２cm。伞房花序，小花密集，花粉红色，花径５cm。花期长达４个月，从６～９月份，开花４～６次，每次１５～２０天。生长季剪截新梢后，过２０～２５天，又在分枝上开花，可利用这一特性，人为调整开花数。耐旱、耐寒、耐盐碱、也较耐荫蔽，抗病虫和抗污染能力较强。丛植或片植于草坪边缘、开阔地、宅旁、路边，作为花坛、花篱别具幽趣，是良好的园林观赏树种，近…     

银杏绿枝扦插育苗技术

银杏绿枝全封闭扦插育苗方法 ,是目前多快好省繁殖银杏苗木的一条重要途径 ,一般成活率可达 80 %以上 ,每 6 6 7ｍ2 可得成品苗 4～ 5万株 ,而成本只需播种育苗的 1 3,且方法简便 ,易于管理。1　扦插时间银杏绿枝扦插时间应选择在枝叶停止生长后、木质化前进行 (辽中县一般在 8月下旬至 9月上旬 )。因为这段时间内土温高 ,相对空气湿度比 7～ 8月份低 ,有利于愈伤组织的形成和枝条生根。2　准备工作2 1　土壤准备　要选择地势高爽 ,排水良好 ,且没有扦插过其他苗木的沙质土壤作扦插苗床。苗床要进行翻晒 ,一般翻晒 3～ 4次。苗床宽 80～ 90…     

青檀绿枝扦插育苗技术

青檀俗称掉皮榆 ,属榆科青檀属落叶乔木 ,是我国特有的纤维树种 ,也是国家三级重点保护植物。青檀是石灰岩地区的指示性树种 ,耐干旱、耐瘠薄、萌发力强、寿命长 ,是供石灰岩地区发展的优良经济林树种之一。笔者从事青檀育苗多年 ,现就青檀绿枝扦插育苗技术介绍如下。1　苗圃地的选择和苗床的设立1.1　圃地的位置选择交通便利的地方 ,便于扦插育苗所需的物资及出圃后苗木的运输。要靠近造林地 ,所育苗木既能适应造林地的环境条件 ,又可缩短运输距离 ,降低造林成本 ,同时也避免了长途运输造成的苗木脱水 ,提高造林成活率。选择在背风向阳、光…     

银中杨绿枝扦插育苗技术

银中杨是东北地区城乡绿化的优良杨树品种.本文从插前准备、穗条剪取时间、穗条准备、生根促进物质的应用、插后管理等方面,详细介绍了银中杨绿枝扦插育苗技术.     

冬枣弓棚绿枝扦插育苗技术

利用冬枣绿枝扦插育苗，有效地解决了枣树良种快繁问题，扦插生根率和移栽成活率分别达到93％。7月25日移栽大田的扦插苗当年平均高生长22．5cm，4－5个分枝，最高为32cm。     

新疆杨绿枝扦插育苗

<正> 新疆杨(Populus alba var.pyra-midalis Bunge)树干通直,树皮灰绿色,表皮光滑,叶五裂,叶背具白色绒毛,树冠圆柱形,冠形饱满,植株雄性,不飞花絮。采用硬枝扦插法育苗成活率不足20％,为解决这一难题,我们试用绿枝扦插进行繁殖,效果很好,成活率达95％,当年苗高和苗粗分别达到0.4 m和0.35cm。另外,采用此法繁殖可以结合生长季抹芽修枝进行,充分利用了条穗资源。     

金冠柏嫩枝扦插育苗技术

金冠柏是我国彩色观赏针叶乔木的一个栽培品种,广泛适用于城乡绿化工程中。金冠柏市场需求量大,发展前景广阔,是农民又一个致富新品种。根据金冠柏的生长特性,按照嫩枝扦插育苗的方法,利用小拱棚育苗、大棚育苗技术,培育出优质、健壮的苗木。     

三种类型美国尖叶扁柏扦插繁殖试验

本试验主要是将本所引种栽培的美国尖叶扁柏分为狭冠、阔冠、矮生3种类型,分别剪取枝条进行扦插繁殖,对所取得的试验数据进行方差分析LSD检验,进而把优良品种向市场推广应用。     

中华红叶杨扦插育苗引种技术

中华红叶杨是一个杨树新品种,它既有杨树端直、高大、速生的特性,又有彩叶树种的观赏性,具有很大的发展潜力和推广价值。     

桉树萌条嫩梢扦插育苗技术研究

将尾叶桉（Ｅｕｃａｌｙｐｔｕｓｕｒｏｐｈｙｌｌａ）的播种苗萌条嫩梢分别用不同药物１，２，３，４，５号处理，并以清水作对照，进行扦插育苗试验．结果表明，用药物处理可提高扦插生根率．同时，可降低扦插苗的死亡率．用２，３，４，５号药物处理的插穗生根率比对照高１０％左右，药物对降低扦插苗死亡率的效果以２号，５号药物最佳．根据对桉树组培苗嫩梢扦插试验，１１月和３月是扦插育苗的最佳季节，５月～８月不宜扦插；桉树的不同种和不同无性系，其扦插生根率是不同的，以雷林１号８５０１和刚果１２号Ｗ５生根率高，而巨尾桉Ｃｕ１较难生根．     

日本落叶松嫩枝扦插育苗试验研究

为提高日本落叶松良种无性繁殖系数,以采穗圃半木质化嫩枝为试验材料,开展不同扦插时间、不同无性系与采条部位、不同扦插基质、不同扦插激素与浓度处理及母株年龄等因素的试验研究,结果表明:以6月26日~7月5日,2.5 a生母株主干上的半木质化萌条,以泥炭20%+锯末50%+谷壳30%或锯末作基质,采用激素IBA200 mg/L浸泡0.5 h效果最好,其扦插成活率达到85%以上,平均生根量达到13.8根,平均根长达到11.6 cm。     

桉树嫩枝扦插繁殖的研究进展及对策

对桉树嫩枝扦插繁殖技术、插穗生根机理及母株复壮可靠性等的研究进展和存在问题进行了评述，主要讨论了：(1)桉树扦插繁殖关键技术；(2)与生根机理关系密切的植物生长激素、氧化酶类及其活性变化、植物体内抑制剂等生理生化因子；(3)母株复壮的可靠性。同时对研究中存在的问题提出了对策。     

中华红叶杨高垄覆膜扦插快繁技术

通过近几年对中华红叶杨的引种繁殖研究,总结了其快速、实用的繁殖技术。从选地、整地、起垄、覆膜、插穗截制与处理、扦插及管理等方面介绍了中华红叶杨起垄覆膜硬枝扦插繁殖技术,并就起垄、覆膜、渗灌等方面分析了该技术繁殖速率高的原因。     

Liquid culture and transformation of hinoki cypress (Chamaecyparis obtusa Sieb. et Zucc.)

Hinoki cypress (Chamaecyparis obtusa) is one of the most important timber resource forest trees in Japan. Because seed production from a seed orchard of hinoki cypress is not constant every year, micropropagation from a limited amount of material is useful. Up to now, the conventional tissue culture method using solid medium has been used. Here a new method using liquid culture in tubes rotated vertically is described. Shoot primordium of hinoki cypress was inoculated in Campbell and Durzan’s (CD) liquid medium containing different cytokinins (6-benzylaminopurine (BAP), Zeatin, thidiazurone (TDZ)), and the container tubes were rotated vertically around the axis at 2 times / min. Culture room temperature was 25°C and light condition was 16 h photoperiod per day of fluorescent lamps. Zeatin at 1μM concentration was the best for maintaining the shoot primordium production and TDZ induced callus on the surface of the shoot primordia. After shoot primordium multiplication in the liquid culture, they were transplanted to agar medium for shoot elongation. A high concentration of agar (up to 16 g/L) or AVF (anti vitrification factor from Dr. Nairn, 1995) was effective to prevent vitrification of the shoots. Transformation of shoot primordium was done using particle bombardment with vectors containingβ-glucuronidase (GUS) gene or herbicide resistance gene (bar). Positive result for transient transformation was observed with the histo-chemical study for transformation with GUS. Integration of a useful herbicidebar gene into the shoot primordium culture system was also tried and stably transformed plants were obtained. This is the first report of stable transformation of Japanese conifer using practically useful gene. The generous supply of AVF-B from Dr. B.J. Nairn, Tasman Forestry, NZ is also appreciated.     

栓翅卫矛嫩枝扦插育苗技术

在节能二代温室内用穴盘进行栓翅卫矛的嫩枝扦插育苗试验。结果表明,在7年生优良母树上,采集母树中上部1年生嫩枝,在6月底7月初用1 000 mg/L的IBA+NAA生根剂溶液速蘸10~15 s后,按蛭石∶珍珠岩=1.5∶1的比例作基质进行扦插,其生根时间早,成活率最高,生根率达到90%以上。     

Life cycles of individual roots in fine root system of Chamaecyparis obtusa Sieb. et Zucc.

Recent studies have remarked on differences in the life cycles of individual fine roots. However, the dynamics of individual roots with different life cycles, such as ephemeral and perennial, during root system development are still unknown. We examined individual roots during fine root system development in a mature stand of Chamaecyparis obtusa Sieb. et Zucc. (Cupressaceae) using the sequential ingrowth core method and an anatomical method. The visual classification, i.e., orange, red, brown, intact dead, and fragmented dead, of fine roots corresponded well with the anatomical classification. Orange and red roots contained passage cells, and brown roots contained cork cambium. The proportions of protoxylem groups differed among visual classes. Brown secondary roots were mainly triarch (43%) and tetrarch (40%) and rarely diarch (12%), whereas fragmented dead roots, which constituted more than 95% of the dead roots, were mainly diarch (67%). These results imply that triarch and tetrarch roots tend to form secondary roots, whereas diarch roots tend to become dead roots without secondary growth. Using the numbers of root tips and clusters, root system development could be classified into three stages: colonization, branching within the root system, and maintenance. During the colonization stage, mainly triarch and tetrarch roots, which tend to be secondary growth, invaded ingrowth cores. During the branching stage, primarily diarch roots, which tend to be ephemeral, emerged. Fine root system development involved the recruitment of different individual roots during the life cycle depending on the growth stage.