对开发利用小兴安岭优良野生观果树种资源的探讨     

李国强  孟凡利  于树成  周建宇 《林业勘查设计》2008,(4):90-91

介绍了小兴安岭具有观赏价值的八种野生观果树种,分析了发展这一产业具备的优势和需要创造的条件,以及产生的经济效益.  相似文献   

河南臭椿属观赏类型的研究   总被引：2，自引：0，他引：2  

朱秀谦  张平安 《河南林业科技》2000,20(1):10-12,15

本文报道了河南臭椿属 6个观赏类型 (变种 ) ,即①千头臭椿 ;②红果臭椿 ;③塔形臭椿 ;④扭垂枝臭椿 ;⑤白材臭椿 ;⑥赤叶刺臭椿的主要形态特性、生物学特性及繁殖技术等 ,为发展和推广臭椿属优良观赏类型 (变种 )提供了依据。  相似文献   

吉林市秋季景观树木调查及观赏特性分析   总被引：2，自引：0，他引：2  

建德锋  庞建松 《吉林农业科技学院学报》2006,15(1):4-7

通过对吉林市秋季景观树木进行调查,总结了能很好形成秋季景观的树木28种,并对这些树木从观赏特性方面进行了简单的分类。此外结合这些树木,从赏叶、赏果、赏干皮几个方面详细地分析了秋季景观树木的观赏特性,希望能在树木配植时有所参考。  相似文献   

四川野生观赏植物的多样性与可持续利用   总被引：1，自引：1，他引：0  

王江  李国辉  黄永强 《四川林业科技》2004,25(2):61-65

对四川野生观赏植物的物种多样性、地理分布特点和利用现状进行分析，探讨四川野生观赏植物的保护与可持续利用途径。  相似文献   

上巳节渊源名实述略     

孙思旺 《湖南农业大学学报(自然科学版)》2006,(2)

上巳节是两汉尤其是东汉以后才开始形成并流行起来的节日,它采纳了古老的巫术仪式“祓禊”,又包含了许多鲜活的世俗内容。在上巳节起源,上巳节与祓禊的关系,“上巳”文献的使用,桃花水、《韩诗》残句等相关问题的研究上还存在许多误区。  相似文献   

观赏向日葵的适应性研究   总被引：4，自引：1，他引：3  

张剑亮  周以飞  潘大仁  陈桂洋 《福建农林大学学报(自然科学版)》2004,33(4):419-422

对不同播季观赏向日葵的生长周期、生物学特性及其适应性等研究表明,观赏向日葵适应性表现良好,分枝多、抗逆性强.播季对花期、全生育期、株高和花盘径的影响较大.不同花色品系在不同播季下花期、株高、结实率3个性状的变异系数相近,其余性状的变异系数均存在较大差异.  相似文献   

太白山野生观赏植物引种与栽培试验初报   总被引：1，自引：2，他引：1  

张中社  陈书文  赵俊侠 《中国农学通报》2007,23(3):415-419

【目的】笔者通过对太白山高海拔野生植物引种栽培试验,寻求适宜关中地区生长的野生观赏植物资源。【方法】将直接在野外采挖的野生植物种源,按其种类进行适当的处理后,进行栽培试验。【结果】对太白山野生观赏植物36科64属84种进行了栽培试验,树种的适应性有一定的差异。巴山冷杉、秦岭冷杉等7种高海拔和中海拔植物不能适应而死亡。领春木、粗榧等11种植物虽能适应下来,但生长不良。中华锈线梅、多花木兰等66种植物表现出较强的适应性。其中,鹅耳枥、青麸杨等部分植物还具备一定的观赏价值,有开发利用前景。【结论】榆科、漆树科等22科,刺楸、卫矛等38种观赏植物可做为关中地区引种植物,用于园林绿化。其中,青檀、山白树、水曲柳三种国家珍稀濒危植物具有一定的开发利用价值,有待于进一步研究。  相似文献   

北京平谷地区有机桃园主要害虫和天敌发生规律研究   总被引：6，自引：0，他引：6  

李志朋  张顶武  董民  杜相革 《中国农学通报》2005,21(5):128-130

为明确有机生产方式下桃园害虫和天敌数量变化,2004年在北京平谷区前芮营村有机桃园用性诱剂法和捕虫网法分别调查了3种主要害虫(梨小食心虫、苹小卷叶蛾和桃潜叶蛾)和4种主要天敌(龟纹瓢虫、异色瓢虫、七星瓢虫、小花蝽和草蛉)的发生规律。结果表明:3种害虫世代较明显,发生高峰集中;天敌数量逐渐积累,数量增加明显。  相似文献   

Minnesota horticultural industry survey on invasive plants     

William L. Peters  Mary Hockenberry Meyer  Neil O. Anderson 《Euphytica》2006,148(1-2):75-86

Summary Horticultural commerce of ornamental plants has been the source of many of our most troublesome plant invaders worldwide. The purpose of this research was to document the knowledge gap of industry perspectives and knowledge of invasive ornamental crops by surveying industry professionals in the Midwest region of the U.S. (primarily in the state of Minnesota). An invasive plant survey was created to assess this information and was mailed to n = 500 individuals and companies randomly chosen from the Minnesota Nursery and Landscape Association (MNLA) membership, which included wholesale/retail nurseries, landscape design, installation & maintenance firms, and retail garden centers. A total of n = 167 surveys (33.4%) were returned and analyzed. A majority of respondents, 62%, felt that the invasive plant issue was very important and 89% tried to direct their customers away from potentially invasive plants. Many respondents, 76%, indicated that they were responsible for educating their customers about invasive ornamental plants. Sixty-nine percent said that they would not sell a plant if it was potentially invasive; however, 57% indicated that this would be true if a competing business was selling the plant. Respondent’s knowledge about specific invasive plants varied from 75% to 89% on the identification of three terrestrial invasive plant crops. Far less, 20% and 21%, were able to identify Butomus umbellatus and Salvinia molesta, respectively, two invasive aquatic species. When asked about regulation of invasive ornamental crops, 43% preferred national, state, or USDA regulation while 22% felt industry self-regulation was best, and 21% approved of private regulation. Opportunities exist for educating horticulture industry professionals about invasive plants and providing information to the public through commercial businesses. Scientific Journal Series Paper No. 051210150 of the Department of Horticultural Science, University of Minnesota.  相似文献   

Inheritance of isozymes in peach x Prunus kansuensis and peach x Prunus davidiana hybrids     

Joseph C. Goffreda  J. M. Armstrong Nick  Shawn A. Mehlenbacher  N. Vorsa 《Euphytica》1991,54(2):161-168

Summary Isozyme variation and inheritance were investigated with starch gel electrophoresis in peach (Prunus persica L. Batsch) x P. kansuensis Rehd. and peach x P. davidiana (Carr.) Franch. interspecific hybrids. Of five enzyme systems surveyed for polymorphism, four systems were identified as polymorphic [isocitrate dehydrogenase (IDH, EC 1.1.1.41), phosphoglucomutase (PGM, EC 2.7.5.1), aspartate aminotransferase (AAT, EC 2.6.1.1), and 6 phosphogluconate dehydrogenase (PGD, EC 1.1.1.44)] and may be useful as genetic markers in future cultivar and rootstock development. Analysis of progenies segregating for pairs of loci suggests a possible linkage between the loci coding for Aat-1 and Pgd-2. Independent assortment was observed for isozyme loci Idh/Pgm-2, Idh/Aat-1, Idh/Pgd-2, Pgm-2/Aat-1, Pgm-2/Pgd-2, and Aat-2/Aat-1. The red leaf locus, Gr, assorted independently of the isozyme loci: Idh, Pgm-2, Aat-1, and Pgd-2.  相似文献