共查询到18条相似文献,搜索用时 203 毫秒
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对广州8个城市公园赪桐属(Clerodendrum)植物的应用情况进行调查和分析。结果显示,广州公园中应用的赪桐属植物有赪桐(Clerodendrum japonicum)、红花龙吐珠(C. speciosum)、美丽赪桐(C. speciosissimum)、龙吐珠(C. thomsoniae)、烟火树(C. quadriloculare)、垂茉莉(C. wallichii)、鬼灯笼(C. fortunatum)等7种,主要运用孤植、丛植和片植等配置形式,对赪桐属植物在热带园林中的配置应用提出建议,为该 相似文献
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动物园作为城市公园的一种,其植物配置具有其特殊性。分析动物园植物配置的特殊功能;在此基础上,以福州市动物园为例,探讨动物园植物配置问题,包括园区植物配置与展区植物配置。为其它同类动物园提供有益借鉴。 相似文献
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福建省高速公路景观绿化植物的选择和配置 总被引:3,自引:0,他引:3
本文就福建省高速公路(福州-诏安段、和溪-龙岩段)景观绿化植物的选择和配置作初步探讨,肯定了绿化植物选择和配置的优点,并指出其中不足之处。同时论述高速公路景观绿化植物选择和配置的四大原则,推荐30种福建省高速公路景观绿化最适植物和最常用植物。 相似文献
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一种侵染花生的新病毒鉴定初报 总被引:12,自引:1,他引:11
从广东省广州市郊花生上分离获得1个新的病毒分离物,病毒粒体为球状,直径约100nm。该病毒分离物在人工接种鉴定的4科13种植物中,能侵染3科11种植物;与花生芽枯病毒(PBNV)抗血清有弱阳性反应;病毒SRNA 3’端813个核苷酸序列与PBNV和西瓜银叶斑驳病毒(WSMoV)同源性为80%左右,与TospovirW属中其它病毒同源性为39%~65%。初步明确该病毒分离物为Tospovirus属的一种新病毒,暂定名为花生坏死斑点病毒(peanut necrotic spot virus,PNSV)。 相似文献
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花的美丽可以给人带来视觉美感和心理愉悦,城市里经常用开花植物来美化、点缀和装饰公园、广场、街道、小区、建筑等。花景的营造都是在充分了解观花植物生态习性的前提下,根据花的外观特点进行合理搭配而形成。本文从观花植物的自然特性、景观应用及花景配置方面进行探讨。 相似文献
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The objective of this work was to determine the applicability of the dry‐weight‐rank (DWR) method for evaluating the botanical composition of forest understorey vegetation. An analysis of plant species abundance was carried out, and instead of ranking the three most abundant species, as is commonly used, up to twelve ranks were scored. Concurrently, four models of relative abundance distribution (RAD) of species were compared for their ability to explain the abundance of species in the study area. The Power‐fraction model resulted in the best goodness‐of‐fit and it was subsequently used to produce the coefficients for the DWR method. Lin's concordance correlation coefficient, the adjusted coefficient of determination, the residual standard deviation and Spearman's rank‐order correlation coefficient indicated a good performance of the DWR method. Biomass data and the Shannon index for diversity were also considered. Further analyses showed that there was a trade‐off between the number of ranks scored and the accuracy of the botanical composition produced by the DWR method. It is concluded that, so long as the RAD model that explains the distribution of plant species is known, the DWR method can be applied to forest understorey vegetation. 相似文献
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对福州市4个主要公园的乔木种类和各树种的个体数量进行调查,采用α多样性指数对各个公园乔木树种的调查结果进行分析,并应用二元属性数据的β多样性指数对各个公园乔木树种的多样性进行了初步研究。结果表明:4个公园内有乔木树种共196种,隶属54科97属;Simpson生态优势度指数表现为:闽江公园北园〉闽江公园南园〉温泉公园〉西湖公园;Shannon-Wiener多样性指数表现为:闽江公园北园〉温泉公园〉闽江公园南园〉西湖公园;Pielou均匀度指数表现为:闽江公园南园〉闽江公园北园〉温泉公园〉西湖公园;Whittaker多样性指数表现为:温泉公园〉闽江公园北园〉西湖公园〉闽江公园南园;Sorenson相似度指数表现为:闽江公园南园和温泉公园的Sorenson相似度指数最小,为0.39535,闽江公园北园和闽江公园南园最大,为0.63514。 相似文献
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《Journal of Crop Improvement》2013,27(2):317-333
Summary This paper reviews factors influencing water use and methods to reduce it. Water use in turfgrass typically is quantified by evapotranspiration rate (ET), which refers to the loss of water from the soil through evaporation and from the plant through transpiration. Turfgrass ET rates vary among species and cultivars within a species. Inter-and intraspecific variations in ET rates could be explained by differences in stomatal characteristics, growth rate and habit, canopy configuration, and rooting characteristics. The ET rates also are influenced by environmental conditions and cultural practices. Environmental conditions include climatic factors such as temperature, relative humidity, solar radiation, and wind and edaphic factors such as soil temperature, water availability, and soil texture. Cultural practices include mowing, irrigation, fertility, use of antitranspirants, and plant growth regulators. 相似文献
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为阐述高产的小麦蘖叶构型特征,并验证了具有这种蘖叶构型小麦品种的高产性,对郑麦7698、周麦18和矮抗58的蘖叶动态及其特征进行分析。结果表明,高产小麦蘖叶建构过程中,分蘖以冬前低位蘖为主,春生高位蘖少且不拔节;小麦生育前期冠层上部叶片直立,冠层透光性好,下部叶片面积大且持绿期长,在灌浆中后期叶片仍能保持较好的直立性。这种蘖叶构型分蘖冗余小,光和养分资源能高效利用,同时冠层透光性好,群体光合同化能力可以得到充分发挥,进而易于实现高产。该蘖叶构型在密植条件下的优势更为突出,有助于解决生产中农民大播量种植进而造成倒伏减产的问题。 相似文献