南宁市白龙公园的王莲繁殖试验成功

王莲原产南美洲亚马逊河流域的热带地区,19世纪中叶输入欧洲。1958、1959年中科院北京植物园先后两次从苏联、民主德国引种,在我国已有30多年引种栽培的历史。但是目前我国对王莲的引种、繁殖仅限于少数科研部门在温室进行,还无法在露天中越冬,栽培成本昂贵,所以王莲一直无     

日本落叶松山地播种育苗技术

日本落叶松(Larix leptolepis)原产日本,它适生范围广,生长初期快,抗病性能强,是一种速生丰产用材林树种。在我国引种栽培已有60余年的历史,目前已成为我国东北东部北纬45°以南山地的主要造林树种。此外,我国山东、北京、河南、山西、湖北、四川、新疆等地也有引种栽培。我省的引种栽培始于70年代,通过近20年的培育,已初步显示出其速生性,丰产性。近年来我省太行、太岳、中条等林局都相继开展了日本落叶松的引种栽培工作。但由于该树种种子颗粒小,顶土力弱,播种育苗比较困难,往往由于育苗技术问题,导致育苗失败。因此,掌握育苗技术,培育出大量合格苗木,已成为大面积引种栽培的关键环节。为此,我们于1990年在大河林场进行了日本落叶松育苗试验,试验面积2亩,其中春季育苗1.5亩,雨季育苗0.5亩,均获得了成     

北美枫香引种栽培试验研究

对北美枫香在桐乡引种栽培和造林应用进行了试验研究,对其物候特性、培育方法、生长量、管理方式和造林表现情况进行了一系列的测量、观察和总结分析。结果表明北美枫香能够良好的适应生长,同时试验研究为北美枫香在桐乡地区育苗、栽培和造林应用提供依据与参考。     

上海攻克王莲相关育苗技术

<正>2015年11月10日讯:上海辰山植物园经过6年不懈努力,系统掌握了沪上种植王莲的种子采收时间、冬季储藏条件、春季育苗措施、最佳移栽条件以及日常施肥管理等技术,每年除了繁育王莲幼苗供给园区展示外,还为行业相关单位提供种苗和技术咨询。王莲在原产地为多年生水生植物,但在长三角地区不能自然越冬,只能作为1年生植物栽培。由     

红皮树在南岳的引种栽培

南岳树木园引种红皮树,经过20 a的驯化栽培,现已开花结实。作者介绍了红皮树采种、育苗、绿化大苗培育以及造林等引种栽培技术,同时,对其苗期以及引种20 a后生长情况进行了抽样调查,为红皮树的开发利用提供了依据。     

观赏植物水栒子的播种育苗技术

在乌鲁木齐引种水栒子,开展引种育苗栽培试验,采用了机械挫伤、硫酸浸泡、雪藏层积、浓硫酸+赤霉素的不同处理方法进行了育苗试验,总结出了水栒子播种育苗技术.     

金银花育苗技术总结

文章结合海南省林业科学研究所承担的科技项目“金银花的引种栽培及技术研究”与作者多年来的从事育苗工作经验,着重介绍金银花的育苗技术,对今后培育金银花苗木有一定的参考价值。     

黑皮油松引种试验初报

20世纪80年代初,黑皮油松由哈尔滨引入伊春,经过20多年的栽培、驯化,获得成功并繁育了子代。文中介绍了黑皮油松引种、育苗、造林、子代培育等试验情况。     

山西省林业科学研究院

正珍贵用材树种黄菠萝引种及人工林培育技术完成单位:山西省林业科学研究院内容简介:项目针对山西省珍贵阔叶用材树种稀缺的现状,将原产于我国东北地区的珍贵用材树种黄菠萝引种到霍州、安泽等地,经过40余年的试验和观测研究,引种成功;根据黄菠萝的生物学、生态学特性,进行了树种适应性评价,提出了黄菠萝在山西的适宜栽培区域;同时进行了黄菠萝播种育苗、造林、大苗移植等试验研究,总结出黄菠萝人工林培育系列技术,对山西省珍贵用材树种培育具有重要意义。     

降香黄檀栽培技术探讨

指出了降香黄檀引种栽培育苗的种子发芽率高,苗木生长快。从容器育苗、造林、苗圃地选择、种子处理等方面探讨了降香黄檀引种育苗适宜福建省安溪县的栽培技术。     

Blight of conifer seedlings caused by Colletotrichum gloeosporioides

In a growth chamber experiment, 70-day-old seedlings of 10 conifer species were inoculated with Colletotrichum gloeosporioides conidia to determine the host range of the fungus. Based on the percentage of seedlings affected and the disease severity on individual seedlings, the order of most to least susceptibility was: western hemlock (WH), mountain hemlock, western larch, Sitka spruce, Engelmann spruce, Douglas-fir (coastal form, then interior form), white spruce and ponderosa pine; lodgepole pine and western red cedar remained unaffected. Inoculation of WH needles showed that within 24 h C. gloeosporioides conidia germinate and appressoria (penetration structures) form. A growth chamber study demonstrated that the pathogen can infect WH at needle wetness periods as short as 15 min; number of needles affected was higher at 0.5 h, but did not increase further even when wetness was extended up to 8 h. The results are discussed in relation to blight management of greenhouse-grown conifer seedlings.Portion of a Bachelor of Science (Honors) thesis, Department of Biology, University of Victoria, Victoria, British Columbia.     

西双版纳的王莲及过冬育苗技术

介绍西双版纳的王莲和过冬繁殖技术,解决在冬春低温的特殊年份王莲种植问题。     

Effect of NaCl and high pH on seedling growth of 15 Eucalyptus camaldulensis Dehnh. provenances

Eucalyptus camaldulensis Dehnh. is a moderately salt-tolerant Australian tree species widely used in farm forestry, often in salt-affected landscapes. In a glasshouse experiment, E. camaldulensis seedlings from 15 wide-ranging Australian seed sources (provenances), were cultured in sand-filled pots and treated for 57 days with control (no added NaCl in tap water, neutral pH), saline (150 mol m^–3 NaCl, stepped high pH (pH 7.6 to 9.5) and combined NaCl and high pH solutions. Significant differences were found among provenances in height and shoot dry weight. Differences in provenance response to treatment were found for dry weight but not for height. Reductions in shoot dry weight due to NaCl and high pH ranged from 42.9% to 82.0% and 4.3% to 51.7% respectively. Provenances from Lake Hindmarsh-SE (Victoria) and Lake Albacutya-N (Victoria) had relatively high tolerance to both stresses whereas those from Lake Albacutya-S (Victoria), Lowan Valley (Victoria), Silverton (New South Wales) and Katherine (Northern Territory) had low tolerance to both stresses. Provenances from De Grey River and Fitzroy River (Western Australia) were most tolerant of high pH. The performance of these provenances in this experiment generally accorded well with that in saline field environments.     

蓝桉树木园异型杂交及花粉污染的微卫星分子标记研究

本文应用4对微卫星分子多态引物,对利用优株嫁接建立的蓝桉(E.globulus)树木园中的118个自由授粉子代的DNA微卫星指纹进行了分析.结果表明:选用的引物具有高度多态性,各个位点扩增得到的平均等位基因数为14.25,树木园中母株的异型杂交率为15%(95%,整体异型杂交率为47.9%,外源花粉污染率为17.6%.由于该树木园的异型杂交率低,其自由授粉的种子应用价值不高,因此应采用大规模人工授粉来制种或选用树木园中异型杂交率高的母株采种.     

Mammalian browsing damage in the Mt. Cole State forest,southeastern Australia: analysis of browsing patterns,spatial relationships and browse selection

Browsing by mammals can have a substantial impact on the survival, growth and form of regenerating forest trees. This study investigated the severity and distribution of mammalian browsing damage, and the degree to which eucalypt seedlings (Eucalyptus spp.) were selected for browsing on three regenerating native forest coupes in southeastern Australia. Damage was greatest 6 months after eucalypt germination and at this time, both messmate (Eucalyptus obliqua) and blue gum (E. globulus) seedlings were browsed at similar intensity. Nine and 12 months after germination, messmate was browsed more heavily than blue gum. Consistent relationships between browsing damage and both distance from the forest edge and wallaby density were not observed. Analysis of use and availability data for messmate, blue gum and manna gum (E. viminalis) seedlings showed that messmate was selected for browsing more than expected by chance while manna gum was browsed less than expected. Mammalian browsing affects a substantial portion of Victorias native forest estate, and could alter the species composition of future forests. Research into the ecology of browsing species and the development of non-lethal browsing reduction strategies is seen as a priority for the management of mammalian browsing in Victoria.     

Monitoring Victoria’s public forests: implementation of the Victorian Forest Monitoring Program

A new strategic inventory across all publicly managed forests has been installed in Victoria. For the preceding two decades, Victoria’s forest inventory has been compiled from various data sources from across the state, an approach that doesn’t allow information about the nature and rate of changes to the resource to be estimated, or for projections or forecasts to be made. To address these limitations, the Victorian Forest Monitoring Program (VFMP) was established, to monitor Victoria’s progress in meeting a commitment towards sustainable forest management, and to satisfy requirements for state and national reporting. The purpose of the new program is to ‘assess and monitor the extent, state and sustainable development of Victoria’s public forests in a timely and accurate manner.’ The VFMP consists of a plot-based system of permanent observational units located on a state-wide grid. A combination of ground-based and aerial photo plots and remotely sensed data are used to capture a set of basic attributes that are used to derive indicators of sustainability. To meet the monitoring needs a remeasurement framework has been developed to guide the change estimation procedures. The program was designed and implemented between 2009 and 2015 and used to generate data and information for the most recent Victoria’s State of the Forest Report. The first annual change estimate is due to be completed in 2017. A summary of implementation and proposed maintenance is presented and discussed in this paper.     

克鲁兹王莲繁殖器官的解剖结构和开花结实习性的初步研究

2006年笔者对克鲁兹王莲繁殖器官的解剖结构和开花结实习性进行了仔细观察。掌握了王莲的开花结实习性后,可用人工杂交的方法选育出王莲的杂交新品种。王莲属和同科的芡实属具有较密切的亲缘关系,能否用属间杂交的方法选育出王莲与芡实的杂交新品种,是一项值得试探的研究课题。     

澳大利亚维多利亚州公有林管理

维多利亚州是澳大利亚重要的林业省份之一,在其2000多万hm2白土地上,公有土地为910万hm2,森林覆盖率高达80%.公有林业作为公共事业的一个重要组成部分,其管理体制经历了不断改革和发展的过程,特别是1986年以后,随着维州政府《木材工业战略》的颁布和实施,维州的公有林管理进入了一个新的时期。介绍了维州公有林业的主管机构及其职能、天然林资源管理及规划、公有人工林管理及改革,探讨了其林业发展政策及存在的问题。     

东北红豆杉实生苗与扦插苗生长规律的比较研究

对相同条件下相同种源相同苗龄东北红豆杉实生苗和扦插苗生长状况进行了对比研究。结果表明:相同条件下相同种源同龄实生苗树高、冠幅生长要远大于扦插苗;实生苗和扦插苗不同年份生长量存在一定的差异,总体来看,初期实生苗要大于扦插苗,后期两者相差不多;实生苗和扦插苗生长指标存在一定程度的变异,但规律不甚明显。     

组织培养对草莓微繁殖苗植物学性状的影响

为揭示组培因子对草莓微繁殖苗植物学性状的影响,以草莓品种"丰香"为试材,研究了组培因子导致草莓微繁殖苗植物学性状的表现变化。结果表明:在生长季的大部分时间里,草莓微繁殖苗的株高、叶柄长和冠径,均比普通苗要小。在果实成熟期后,普通苗株高呈明显下降趋势。草莓微繁殖苗整个生长期中的4个主要物候期要比普通苗早2～3 d。而茎尖分化出的微繁殖苗的叶面积和植株冠径都要大于不定芽分化出的微繁殖苗。叶片再生植株移栽后的生长情况因不同品种而异。再生植株的生长势较差,在叶面积、叶柄长、株高和植株冠径上,都要低于正常继代培养的微繁殖苗。继代次数不同的微繁殖苗移栽到温室后,在植物学性状上表现出差异,表现为:继代8次的微繁殖苗>继代6次>继代10次>继代4次。这说明草莓的继代次数要限制在10以下才能满足生产上的要求,一般继代次数以5～10次为宜。