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近年来,栗产区广泛采用嫁接繁殖发展板栗生产。在板栗嫁接过程中,要保证嫁接后有较高的成活率,应注意以下几个问题:一、砧木的选择板栗砧木以本砧最为普遍,利用野生种类的也不少,少数也有试用野生栎类作 相似文献
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柞水县是陕西省板栗主要产区县之一,所产大红板栗即镇安大板栗为我国北方品种群中久享盛名之品种。板栗栽培在柞水已有2000余年的历史,在漫长的生产过程中,人工嫁接栽培的为数很少,绝大多数靠天然更新传种接代,形成了雄厚的野生板栗资源,急待改造利用。据农业区划调查,目前全县尚有野生板栗资源1万余亩,约40万株,其中5000亩约20万株可进行改造利用。据此,我所自1983年以来,开展了板栗高接效应试验研究工作。根据三年的试验观测,初步证明野生板栗高接效应试验取得良好效果,平均株嫁接成活率100%,枝嫁接成活率86.8%。嫁接 相似文献
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柞水县是陕西省板栗主要产区县之一,所产大红板栗即镇安大板栗为我国北方品种群中久享盛名之品种。板栗栽培在柞水已有2000余年的历史,在漫长的生产过程中,人工嫁接栽培的为数很少,绝大多数靠天然更新传种接代,形成了雄厚的野生板栗资源,急待改造利用。据农业区划调查,目前全县尚有野生板栗资源1万余亩,约40万株,其中5000亩约20万株可进行改造利用。据此,我所自1983年以来,开展了板栗高接效应试验研究工作。根据三年的试验观测初步证明:野生板栗高接效应试验取得良好效果,平均株嫁接成活率100％,枝嫁接成活率86.8％。嫁接后树冠第1年恢复到原树冠的35.5％,第2年 相似文献
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佛坪县的板栗发展资料显示,在海拔540～1300m之间的缓坡地沙壤土上,分布着100万株野生板栗,其中比较集中的有30％。为充分利用这些野生板栗资源,佛坪县在50年代,已有村民用外地大板栗对野生板栗进行嫁接改造。70年代初,县上提出改造野生板栗扩大板栗资源,县林业部门分别 相似文献
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近几年来 ,有些地方对散生劣种野生板栗进行了高接换头 ,但嫁接不注意质量和管理跟不上 ,造成接后产量低经济效益差。现将应注意的几个技术问题简述如下 :1 嫁接前应做好清园工作一般野生、散生板栗和一些杂树混生在一起 ,嫁接前应将板栗周围的一切杂树清理出去 ,还要及时除掉 相似文献
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茅栗和板栗都为壳斗科板栗属植物,茅栗和板栗能否嫁接成活,是从事栗类研究工作者科技争论的一个问题。有的资料介绍,茅栗是嫁接板栗最好的砧木。又有的资料介绍,茅栗不能和板栗嫁接,并且指出,前种提法是因为把野生板栗和茅栗混为一谈,统称“茅栗”的结果。因此,存在着茅栗和板栗究竟能不能嫁接的问题?为了从实践中获得真正的知识,一九七八年,我们开展了茅栗嫁接板栗试验。 相似文献
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本文系统总结了大别山区野生板栗就地嫁接中的主要问题。认为:利用野生板栗作砧木比选用茅栗作砧木成活率高;接穗品质低劣是影响成林产量的主要原因;改劈接为插皮接,嫁接幼树夏季摘心是提高嫁接成活率的关键;清除林内杂灌,预防病虫害,高接改造劣株是提高产量的有效措施。 相似文献
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香榧嫁接和人工授粉技术初探 总被引：4，自引：0，他引：4
嫁接和人工辅助授粉是提早香榧结实和丰产的重要技术。研究发现,影响嫁接成活率的主要因素是接穗的年龄,以1年生新枝作为接穗嫁接成活率较高。挂枝授粉和嫁接授粉均能提高香榧的结实率,但嫁接辅助授粉结实量远比挂枝授粉要高。 相似文献
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Modifications in root-shoot relationships induced by graft incompatibility were studied in peach/plum graft combinations by means of carbohydrate and nitrogen analyses and isotope labeling. Mobilization of stored carbon, phloem transport of carbon, and mobilization, assimilation and distribution of nitrogen were studied in one compatible peach/plum graft (Prunus persica L. Batsch cv. springtime grafted on Prunus cerasifera L. Ehrh cv. myrobalan P 2032) and one incompatible graft (Prunus persica L. Batsch cv. Springtime grafted on Prunus cerasifera L. Ehrh cv. myrobalan P 18) for 89 days after grafting. Carbon and nitrogen reserves were mobilized in the rootstock in both graft combinations during the first 78 days following grafting. After that, sorbitol concentration was lower in the roots of the incompatible graft than in the roots of the compatible graft, whereas soluble sugars and starch accumulated in the peach scion of the incompatible graft. In both graft types, carbon was allocated mainly to the scion. Labeling with (13)CO(2) from 78 to 81 days after grafting showed that carbon partitioning among the different plant organs was only slightly affected by graft incompatibility. Carbohydrate concentrations provided indirect evidence that carbon transfer to the roots was hindered in the incompatible graft. Labeling with (15)NO(3) showed that nitrogen distribution and the rate of nitrogen assimilation were similar in the two graft combinations from 57 to 78 days after grafting. Nitrogen assimilation in the incompatible graft ceased 78 days after grafting, whereas it continued in the compatible graft. 相似文献
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To characterize the structural events associated with incompatibility of graft development, we conducted a histological study of compatible and incompatible pear/pear and pear/quince grafts that had been grown for five months in a greenhouse. Multivariate analysis of histological data describing the structure of the graft union allowed us to discriminate between compatible and incompatible combinations before either macroscopic examination or qualitative microscopic examination differences between graft combinations became evident. The histological variables responsible for the discrimination between incompatible and compatible unions were related to three typical symptoms of graft incompatibility: bark discontinuity, which was the main feature; cambial dysfunction; and accumulation of starch in the scion. Little cell necrosis was observed at the interface of incompatible grafts at the 5-month stage of graft development. Multivariate analysis of histological data provides a new tool for studying early structural events resulting from the graft incompatibility response and for diagnosing early graft incompatibility. 相似文献
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通过研究野皂荚嫁接皂荚的不同嫁接方法、不同砧木粗度对嫁接苗成活率和生长量的影响。结果表明,插皮接和劈接的成活率均达到82%以上,嫁接当年新梢停止生长后高长量达到2 m以上。但劈接法比较费时、费工,最佳的嫁接方法为插皮接。不同砧木粗度对嫁接成活率的影响不大,但砧木越粗接穗的生长量越大。因此,在野皂荚改嫁皂荚定株时,要尽可能保留地径较粗的野皂荚进行嫁接。 相似文献
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几种影响水曲柳嫁接成活与生长的因素分析 总被引：1，自引：0，他引：1
水曲柳的最佳嫁接方法为舌接法,其次为劈接和贴接;在本试验地5月均适于嫁接,最佳嫁接时间为中、下旬（2005年结果）,高生长也达到最大;舌接带顶芽接穗嫁接成活率（97．2％）显著高于无顶芽接穗（43．1％）,当年高生长量差异不显著;水曲柳接穗嫁接成活率雌株（87．2％）高于雄株（79．2％）,但生长量相反;不同无性系接穗的嫁接成活率及当年高生长差异极显著;高砧嫁接成活率与低砧嫁接差异不显著,但接穗当年平均高生长低于低砧嫁接。 相似文献
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用浓硫酸处理皂荚种子,分析其对种子膨胀率和发芽率的影响。以同种源、长势一致的2年生皂荚实生砧木苗为研究对象,研究不同嫁接方法和不同嫁接时间对成活率的影响。结果表明,随着浓硫酸浸泡时间的延长,膨胀率增加,浸泡45 min的皂荚种子发芽率最高;皂荚的成活率在不同嫁接方法和嫁接时间之间均存在显著差异,春季带木质部芽接的皂荚成活率最高。 相似文献
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A simple tool called the graft guide, and its use with a new grafting technique called the single-bud splice (SBS) graft is described. The graft guide assures precise complementary rootstock and scion cuts, and thus ensures good cambial contact necessary for graft union formation. The use of this tool to graft small (3–15 mm) vegetative shoots of Leucaena species and hybrids is illustrated. An overall grafting success rate of 72% was achieved using this technique for several leucaenas. An additional modified veneer grafting technique for use when rootstock is larger in diameter than the scion, achieved 73% success. Graft compatibility results from 961 grafts between scions of 15 Leucaena species and three interspecific hybrids, and rootstocks of two species are presented. Of the 48 scion/rootstock combinations attempted, 43 (90%) were successful. 相似文献
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在大理州林业科学研究所试验基地分别对采集后贮藏8h、24h、48h、72h的美国山核桃穗条进行含水率测定,并用不同含水率的穗条进行嫁接试验。结果表明,穗条含水率对美国山核桃嫁接成活率有显著影响。穗条采集后贮藏8h含水率为33．45％,嫁接成活率为28．8％;贮藏24h含水率为32．65％,嫁接成活率最高,为61．3％;贮藏48h含水率为31．44％,嫁接成活率为43．8％;贮藏72h含水率为31．07％,嫁接成活率最低,为25．0％。穗条蜡封最佳时间为采集后1～2d。 相似文献