PONDEROSA

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油松×黄松杂交种苗期试验研究
《林业科技通讯》2019年第8期31-33,共3页崔国栋 
山西省科学技术厅科技发展计划(农业部分)项目,优良乡土树种油松×黄松种间杂交新品种选育,20130311023—1
以乡土树种油松(PinustabulaeformisCarr.)无性系雌球花为母本,以引进树种美国西部黄松(P.ponderosa)雄球花为父本,开展了种间杂交试验,取得了21份杂交种子。并通过育苗试验,观测了2年生杂交子代苗木性状表现的变异,初步选择出复1×H3;...
关键词：油松 PINUS tabulaeformis Carr. 黄松 PINUS PONDEROSA 杂交 
Ponderosa Pine Seed Source Test in Nebraska in the Central Great Plains of the United States
《Open Journal of Forestry》2013年第3期75-78,共4页Wayne A. Geyer Keith D. Lynch Peter Schaefer William R. Lovette 
Ponderosa pine (Pinus ponderosa Laws) has been planted widely in the Great Plains for wind breaks. A 1968 study recommended using material from south-central South Dakota and north-central Nebraska. A second test to f...
关键词：PINUS PONDEROSA PROVENANCE SEED Source Family Tree Selection Growth Characteristics 
Spawning, intracapsular development and production potential of viable juveniles of a murex <i>Chicoreus virgineus</i>var. <i>ponderosa</i>Sowerby under laboratory conditions
《Agricultural Sciences》2013年第5期244-248,共5页I. Jagadis K. Shunmugasundaram Md. Sathakkathulla T. Mohanraj 
Muricids are commercially important gastropods and are exploited primarily for shell craft industries. They also occupy a niche in ornamental keeping. Studies on the larval development of muricids in Indian waters are...
关键词：SPAWNING Intra Capsular DEVELOPMENT Muricids Chicoreus Spp 
Generalized Algebraic Difference Site Index Model for Ponderosa Pine in British Columbia,Canada
《Chinese Forestry Science and Technology》2012年第3期61-62,共2页Zhao Lei Ni Chengcai Gordon Nigh 
Based upon 3 widely used base models, a total of 8 ADA/GADA site index models were derived.The data for these models in this study were obtained from 79 pith-split stem analysis plots and the estimation method was "in...
关键词：SITE INDEX model GENERALIZED ALGEBRAIC DIFFERENCE approach PONDEROSA pine SITE INDEX age 
Rapid Increase in Log Populations in Drought-Stressed Mixed-Conifer and Ponderosa Pine Forests in Northern Arizona
《Open Journal of Forestry》2012年第2期59-64,共6页Joseph L. Ganey Scott C. Vojta 
Down logs provide important ecosystem services in forests and affect surface fuel loads and fire behavior. Amounts and kinds of logs are influenced by factors such as forest type, disturbance regime, forest management...
关键词：Climate Change Fuels Logs Mixed-Conifer FOREST PONDEROSA Pine FOREST Spatial Variability 
Ponderosa Pine Family Growth Comparisons in the Central Great Plains of Kansas
《Open Journal of Forestry》2011年第2期27-30,共4页Wayne A. Geye Keith D. Lynch 
Ponderosa pine (Pinus ponderosa Laws.) has been planted widely in the Great Plains. Recommendations based on a 1968 study were to use material from south central South Dakota and north central Nebraska. A second test ...
关键词：PONDEROSA PINE PINUS PONDEROSA PROVENANCE Seed Sources Tree Selection GROWTH Characteristics. 
美卓将向墨西哥Cartones Ponderosa公司提供纸板机改造业务
《造纸信息》2011年第6期73-73,共1页
美卓将对墨西哥Cartones Ponderosa，S．A．deC．V公司San Juan delRio纸厂一台折叠箱纸板机实施改造。改造后的1“机将于2012年第二季度重新启动运行。合同金额未公布。美卓供货包括对涂布部和烘干部的改造。两套OptiDry Vertical冲击...
关键词：美卓公司 墨西哥 CartonesPonderosa公司 纸板机 改造业务 
Ponderosa多格式路由切换器
《智能建筑电气技术》2008年第3期71-71,共1页KRAMER Electronics, Ltd. 
性能强大和灵活多样的Ponderosa多格式路由切换器是杰出的HD路由切换器，应用在播控、制作及后期制作等领域。通过扩展模块，8路输入／8路输出递增，Ponderosa根据您的HD的需要而扩展。选择您所需要的矩阵尺寸，支持到64×64，仅4RU，12...
关键词：路由切换器 多格式 数字视频信号 后期制作 I/O板 模块化设计 扩展模块 音频选项 
Guidelines for Managing Wildlife Habitats in Southwestern Ponderosa Pine Forests of the United States
《Journal of Forestry Research》1997年第2期108-110,共3页PeterF.Ffolliott 
Forest management practices, particularly timber harvesting activities, affect the habitats of a large numberof wildlde species found in southwestem ponderosa pine forests of the United States. Timber harvesting activ...
关键词：WILDLIFE HABITAT Resourse Ponderosa pine forest 
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