1)Populus deltoides × P.nigra cv.Chile南方四季杨
1.Influence of Batocera horsfieldi on Wood Quality of Five-year-old Populus deltoides × P.nigra cv.Chile;云斑天牛对五年生南方四季杨木材性质的影响
2)evergreen poplar四季杨
1.Nankang Poplar and evergreen poplar are new fast-growing tree species of new varieties selectively breeded out in recent years.南抗杨和四季杨是近年来选育出的速生树种新品种 ,我们于 2 0 0 1年在攀西地区首次引种进行扦插和造林试验。
2.The photosynthetic characteristics of evergreen poplar and Nankang poplars with 6-year old on dry season and rainy season in Panxi dry valley had been studied.研究了攀西干旱河谷6a生的四季杨和南抗杨在旱季和湿季叶片的光合特性,结果表明:四季杨和南抗杨的光补偿点约为66。
3)southern type of poplar南方型杨树
1.247) was selected as the model of standard volume table for southern type of poplar, which is the two—way volume table compiled according to it i.根据31块标准地每木调查和树干解析资料,分别采用10个材积方程进行回归拟合,通过相关程度与标准差比较,以及回归方程与回归系数的显著性检验,选出了南方型杨树标准材积表的方程模型:V=0。
2.Based on classification and combining site conditions and forest densities for southern type of poplar, the cultivation objective and age limit of industrial matcria forests were studied quantitatively in accordance with investigation data at 10 counties and cities of Hubei province of forest stand in 31 standard plot.根据湖北省10个县、市31块标准地林分的调查资料,在对杨树所处立地条件和林分密度类型进行分级组合的基础上,对南方型杨树工业原料林的培育目标与培育年限进行了定量化研究。
3.According to realistic specialty in plantations for southern type of poplar in Hubei province and detailed data from 31 sample plots, the optimal management density was explored in this paper by using dynamic programming method on the basis of the secondary effect of density model.针对湖北省南方型杨树人工林的现实特点,根据31块详细样地资料,以密度二次效应模型为基础,利用动态规划方法,对南方型杨树人工林的最适经营密度进行了探讨,同时,在兼顾单株营养面积和群众栽培习惯,以及造林可操作性的前提下,提出了适合于南方型杨树人工林在不同立地条件下的造林株行距,可为造林施工、林分抚育间伐和综合经营提供科学依据。
英文短句/例句
1.Studies on the Growth and Yield Models of Poplar Plantations in Southern Area;南方型杨树人工林生长与收获模型的研究
2.Status and Development of the Southern Type Poplar Processing Industry in Jiangsu Province;江苏南方型杨树的加工利用现状及发展
3.Observational Study on Phenophase of 6 Varieties for Southern Type of Poplar including Populus deltoids CL. Dan Hong丹红杨等6个南方型杨树无性系物候期观察研究
4.Studies on Growth Analysis and Economic Benefits Evaluation of South-type Poplar Stands in Different Densities in Hubei Province;湖北省不同密度南方型杨树林分的生长分析与经济效益评价
5.A Study on Effects of Biological Mulching on Growth and Soil Properties of Poplar Plantation in Southern Upland Area;南方山地杨树人工林生物覆盖效应的研究
6.Studies on photosynthetic characteristics of Populus deltoides from Northern and Southern USA南北方型美洲黑杨光合作用特性研究
7.Effects of Biological Mulching on Rhizospheric Nutrition and Growth of Poplar Plantation in Southern Upland Area;生物覆盖对南方山地杨树人工林根际营养及生长的影响
8.The blister canker on poplar trunks causd bg Botryosphaeria dothideaarewidely distributed in North China.杨树水泡型溃疡病分布广泛,严重为害杨树。
9.A Fractal Approach to Crown Structure and Rooting Characteristics of Poplar and the Strategies of Poplar Breeding;杨树冠型、根系的分形特征及杨树改良策略
10.Study on Combustion Characteristics and Sulfur Retention of Wood-coal Briquette;杨树废料型煤燃烧和固硫特性的研究
11.The poplars stand upright in the field of the north.白杨树笔直地挺立在北 方的旷野上.
12.Estimation Method for Standing Tree Volume of Poplar By using Stump利用伐根估算杨树立木材积方法研究
13.Characteristics of Soil Heavy Metal Pollution and Efficiency of Phytoremediation Using Poplars in the Southern Beijing京南地区土壤重金属污染特征与杨树修复效应
14.Study on Hydrocarbon Accumulation Condition in Northern Depression of DaYangshu Basin;大杨树盆地南部坳陷油气成藏条件研究
15.Studies on the Insect Community Structure and Diversity of the Poplar Tree in the North of Hebei Province;河北南部杨树昆虫群落结构及多样性研究
16.Genome-Wide Analysis of ACTIN Families in Arabidopsis Thaliana,Oryza Sativa and Populus Trichocarpa拟南芥、水稻和杨树ACTIN家族全基因组分析
17.Conservation and Application of the Genetic Resource of Native Poplars in Southwest China中国西南地区乡土杨树基因资源的保护与利用
18.medium-sized tree having glossy lanceolate leaves; southern China to Taiwan and southern Japan.中型树种，茅尖形叶，有光泽；分布在中国南方到台湾和日本南部一带。
相关短句/例句
evergreen poplar四季杨
1.Nankang Poplar and evergreen poplar are new fast-growing tree species of new varieties selectively breeded out in recent years.南抗杨和四季杨是近年来选育出的速生树种新品种 ,我们于 2 0 0 1年在攀西地区首次引种进行扦插和造林试验。
2.The photosynthetic characteristics of evergreen poplar and Nankang poplars with 6-year old on dry season and rainy season in Panxi dry valley had been studied.研究了攀西干旱河谷6a生的四季杨和南抗杨在旱季和湿季叶片的光合特性,结果表明:四季杨和南抗杨的光补偿点约为66。
3)southern type of poplar南方型杨树
1.247) was selected as the model of standard volume table for southern type of poplar, which is the two—way volume table compiled according to it i.根据31块标准地每木调查和树干解析资料,分别采用10个材积方程进行回归拟合,通过相关程度与标准差比较,以及回归方程与回归系数的显著性检验,选出了南方型杨树标准材积表的方程模型:V=0。
2.Based on classification and combining site conditions and forest densities for southern type of poplar, the cultivation objective and age limit of industrial matcria forests were studied quantitatively in accordance with investigation data at 10 counties and cities of Hubei province of forest stand in 31 standard plot.根据湖北省10个县、市31块标准地林分的调查资料,在对杨树所处立地条件和林分密度类型进行分级组合的基础上,对南方型杨树工业原料林的培育目标与培育年限进行了定量化研究。
3.According to realistic specialty in plantations for southern type of poplar in Hubei province and detailed data from 31 sample plots, the optimal management density was explored in this paper by using dynamic programming method on the basis of the secondary effect of density model.针对湖北省南方型杨树人工林的现实特点,根据31块详细样地资料,以密度二次效应模型为基础,利用动态规划方法,对南方型杨树人工林的最适经营密度进行了探讨,同时,在兼顾单株营养面积和群众栽培习惯,以及造林可操作性的前提下,提出了适合于南方型杨树人工林在不同立地条件下的造林株行距,可为造林施工、林分抚育间伐和综合经营提供科学依据。
4)South Poplar南方型杨树
1.Studies on the One-year-old South Poplar for Fiber Timber;一年生南方型杨树用作纤维材的研究
5)Populus deltoides 60/160×P.nigra chile南方常绿杨
6)CSR Sifang南车四方
1.Study on the Application of Lean Production in CSR Sifang Locomotive & Rolling Stock Co., Ltd;南车四方公司精益生产应用研究
延伸阅读
四季1.春﹑夏﹑秋﹑冬四时的总称。每季三个月，以农历一月﹑四月﹑七月﹑十月为一季的开始。 2.农历四个季月的总称。即指春三月，夏六月，秋九月，冬十二月。
