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黄山栾树栽培技术及应用 总被引：1，自引：0，他引：1
黄山栾树作为很好的园林绿化和观赏树种,应用广泛。本文首先概述了黄山栾树的生物学特性及生态习性。然后根据其生物学特性和生态习性详细地介绍了其栽培技术的研究及应用。 相似文献
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淹水胁迫试验采用双盆套法对黄山栾树幼苗分别进行正常浇水(CK)、涝害处理(ZK)及渍害处理(LK),同时观察在3种处理方式下其生长状况、渗透调节物质含量及荧光特性的变化,研究发现第31天ZK幼苗叶片几乎全部脱落,而LK幼苗叶片则部分变黄。随着淹水时间的延长,ZK幼苗、LK幼苗的脯氨酸含量、可溶性糖含量、Fo值、NPQ值均大幅度提高,分别提高了301%与263%、220%与144%、20.61%与8.2%、86.84%与38.99%。而Fm、Fv/Fm、ETR大幅度下降,分别降低了78.89%与42.80%、73.63%与45.25%、77.71%与53.50%,但变化幅度LK幼苗比ZK幼苗小很多,这一结果与其外观形态特征变化较为一致。可见,涝害比渍害对黄山栾树幼苗生长影响明显大得多,较长时间渍害下黄山栾树可能会存活,但较长时间涝害下可能会死亡。 相似文献
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锦华栾系无患子科栾树属植物,是黄山栾的变种,并经无性繁殖,选育而成的集观叶、观枝、观花、观果于一体的彩叶栾树新品种。本文介绍了锦华栾形态特征及生长习性,阐述了其繁育方法及栽培要点。 相似文献
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黄山栾树的播种育苗技术及其在园林绿化中的应用 总被引：1，自引：0，他引：1
<正>黄山栾树为无患子科栾树属落叶乔木,又称"灯笼花"。其树形端正,枝叶茂密而秀丽。春季嫩叶紫红,夏季开花满树金黄,入秋鲜红的蒴果又似一盏盏灯笼,娇艳悦目,绚丽多姿,微风吹地,似铜铃哗哗作响,故有"摇钱树"之称。近年来被业内人士普遍看好,因而广泛用作行道树、庭荫树和园景树等,开发前景广阔。现将 相似文献
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黔北岩生种子植物种类及其在石漠化治理中的应用 总被引：2，自引：0，他引：2
为筛选优良的可用于石漠化治理的种子植物,采集并鉴定了黔北常见的岩生种子植物,筛选出了一些优良的本土种类,尝试了对岩生植物进行分级,并提出了石漠化治理建议。结果表明:黔北岩生种子植物共有60科101属118种;依据岩生能力和土壤厚度将岩生种子植物分为3级。指出了在治理石漠化时,应根据不同的生境类型选择不同的植物,首选藤本植物,其次为草本和灌木,不应使用乔木。建议试行推广薜荔(Ficus pumila L.)、地瓜(Ficus tikoua Bur.)和石柑子(Pothos chinensis(Ral.)Merr.)3种藤本植物。 相似文献
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通过对杨凌地区15a杂种马褂木的生长情况、观赏性、健康状况等因素调查,同时用多年来杨凌地区普遍栽植的七叶树、栾树作为对照,比较分析了杂种马褂木的适生性。结果表明:从前15a树木生长速度上看,杂种马褂木无论是直径、树高,还是冠幅、冠高,均是最大的,其次是栾树,第三是七叶树;从树木观赏性综合评价来看,杂种马褂木最受人们喜爱,得分数明显高于栾树和七叶树;从抗性表现来看,杂种马褂木健康性最好,几乎无病虫害,无冻裂和日灼现象,亦有极强的吸附二氧化硫、抗风、抗粉尘能力。相对而言七叶树病虫害较多,抗日灼能力较差。因此,杨凌地区乃至关中地区在今后的城乡绿化中可以适当扩大杂种马褂木的栽植规模。 相似文献
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将吲哚乙酸、萘乙酸和2,4-二氯苯氧乙酸分别配成500、1 000、1 500和2 000 mg/L4种不同的浓度,于春、夏季对圆条蚊母插条进行促根处理,并以清水为对照,以期寻找提高圆头蚊母扦插成活率的措施.结果表明:3种不同的生根剂及同一生根剂的不同浓度处理枝条后对扦插生根率的影响都存在显著差异.吲哚乙酸(IAA)和萘乙酸(NAA)能提高插条生根率,2,4-二氯苯氧乙酸(2,4-D)则起到抑制作用.以500 mg/L的IAA浸30 s的半硬枝扦插生根率最高,达78％. 相似文献
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多种食用菌粗提液对烟草病原菌的抑制效果 总被引：1，自引：0，他引：1
研究了11种食用菌水提液对异丝腐霉、黑胫病菌和青枯病病菌生长的抑制作用。取红葱、香菇、木耳、块菌、黑牛肝、黄牛肝、美味牛肝菌、大红菇、奶浆菌、青头菌和虎掌菌等粉末分别与蒸馏水混合后搅拌破碎,采用0．45μm微孔滤膜过滤和真空抽滤泵进行抽滤,得到无菌提取液,对异丝腐霉、黑胫病菌和青枯病菌3种烟草病原菌的抑菌活性进行了测试。结果表明,11种食用菌提取液对3种供试菌株的菌丝生长都有一定的抑制活性。对真菌的抑制率与提取液浓度存在一定的线性相关,其中红葱10％提取液对2种真菌菌株抑制率最高,达到100％。大红菇提取液对烟草青枯病菌表现出农用链霉素相当的抑菌效果;奶浆菌提取液对异丝腐霉的毒力最强,红葱和黑牛肝提取液次之,大红菇提取液对异丝腐霉的毒力最弱;黑牛肝提取液对黑胫病菌的毒力最强,块菌和红葱提取液次之,而1．7％美味牛肝菌提取液对黑胫病菌有促进菌丝生长作用;奶浆菌提取液对黑胫病菌的毒力最弱。可见11种供试食用菌中确实存在抗植物病原菌物质,为生物抑制剂的开发提供了依据。 相似文献
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The influence of seed maturity, seed storage and germination pre-treatments on seed germination of cleome (Cleome gynandra L.) were investigated. Seed maturation studies showed that capsules harvested at 18 days after anthesis possessed the highest dry weight with 19.2% moisture and 1% germination. Development of fresh-ungerminated seed was observed with increasing maturity of fruit, suggesting that cleome exhibited forms of seed dormancy. Storing mature seed at 15 °C and at room temperature for 5 months showed that seed dormancy was broken after 3 months under both storage regimes. When mature seeds were subjected to different treatments including various levels of GA3, KNO3, leaching, pre-chilling, soaking and pre-heating at different temperatures, it was found that pre-heating at 40 °C for period of 1–5 days was the most effective method in breaking dormancy in cleome. 相似文献
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Nina Farwig Debra Bailey Estée Bochud John D. Herrmann Eveline Kindler Niklaus Reusser Christof Schüepp Martin H. Schmidt-Entling 《Landscape Ecology》2009,24(7):919-927
Habitat loss and fragmentation lead to changes in species richness and composition which may affect ecosystem services. Yet,
few studies distinguish between the effects of habitat loss and isolation, or how multiple ecosystem services may be affected
simultaneously. We investigated the effects of variation in cover of woody and open semi-natural habitats and isolation from
forest on the relative functioning of pollination, seed predation and insect scavenging in agricultural landscapes. We established
30 sites in grassland locations in the Swiss plateau around Berne. The sites varied independently in their isolation from
forest edges, in the percentage of woody habitats and in the percentage of open semi-natural habitats in the surrounding landscape
(500 m radius). We experimentally exposed primroses, sunflower seeds and cricket corpses during spring 2008. None of the three
studied services was affected by variation in woody or open semi-natural habitat cover. However, the proportion of flowers
setting seed was significantly reduced by isolation from forest. Further, seed predation and insect scavenging were significantly
lower at isolated sites than at sites connected to woody habitat. This pattern was particularly pronounced for seeds and insect
corpses that were enclosed by wire netting and thus inaccessible to vertebrates. Thus, all three studied services responded
quite similarly to the landscape context. The observed small-scale determination of seed set, seed predation and insect scavenging
contrasts with larger-scale determination of pollination and insect pest control found in other studies. 相似文献