助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   优良乡土阔叶树种 的翻译结果: 查询用时:0.202秒
图标索引 在分类学科中查询
所有学科
林业
更多类别查询

图标索引 历史查询
 

优良乡土阔叶树种
相关语句
  superior indigenous broad leaved tree species
     SELECTION ON SUPERIOR INDIGENOUS BROAD LEAVED TREE SPECIES OF ECOLOGICAL FOREST IN GUANGDONG PROVINCE
     广东省生态公益林优良乡土阔叶树种选择
短句来源
  “优良乡土阔叶树种”译为未确定词的双语例句
     Study on Selecting and Evaluation of Excellent Natively Broad-leafed Trees in Fujian and Cultural Patterns
     福建优良乡土阔叶树种选择评价与栽培模式研究
短句来源
  相似匹配句对
     GROWTH COMPARISON OF INDIGENOUS BROAD LEAVED TREE SPECIES
     乡土阔叶树生长比较
短句来源
     SELECTION ON SUPERIOR INDIGENOUS BROAD LEAVED TREE SPECIES OF ECOLOGICAL FOREST IN GUANGDONG PROVINCE
     广东省生态公益林优良乡土阔叶树选择
短句来源
     Study on Selecting and Evaluation of Excellent Natively Broad-leafed Trees in Fujian and Cultural Patterns
     福建优良乡土阔叶树选择评价与栽培模式研究
短句来源
     Discussion on Local Broad - leaved Tree Species and Their Utilization in Garden Planting
     乡土阔叶树在园林绿化上开发利用的初探
短句来源
     Present Situation and Development of Indigenous Broadleaf Species in Yunnan Hot Areas
     云南热区乡土阔叶树的现状及发展
短句来源
查询“优良乡土阔叶树种”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
没有找到相关例句


The study shows that Cunninghamia lanceolata and Castanopsis hystrix are mixed in star mixture(7 C. lanceolata∶ 3 C.hystrix),when they were 7 years old,the inter specific relation is relatively coordinative,the stand spatial distribution pattern is reasonable,the nutritive space is fully utilized and effect of improving soil fertility is evident,the stand yield and quality are evidently increased,the stocking and biomass of mixed forest stand relatively are increased by 42 82% and 57 08% as compared with...

The study shows that Cunninghamia lanceolata and Castanopsis hystrix are mixed in star mixture(7 C. lanceolata∶ 3 C.hystrix),when they were 7 years old,the inter specific relation is relatively coordinative,the stand spatial distribution pattern is reasonable,the nutritive space is fully utilized and effect of improving soil fertility is evident,the stand yield and quality are evidently increased,the stocking and biomass of mixed forest stand relatively are increased by 42 82% and 57 08% as compared with those of C anceolata pure forest But on the condition of present planting density,the mixed stand structure isn't stable enough at the moment,there is an urgent need to improve inter specific relation further and adjust stand structure through proper thinning C lanceolata and C hystrix artificial mixture is one of effective ways of improving C lanceolata low yield forest,controlling soil fertility reduction and expanding planting scope of excellent indifenous broadleaved trees,which may be further popularized and afforested in suitable areas

红锥杉木混交造林效果研究表明 ,杉木与红锥 ( 7杉∶ 3锥 )星状混交 ,7年生时 ,种间关系比较协调 ,林分空间分布格局合理 ,充分利用了营养空间且改土效果显著 ,明显地提高了林分的产量和质量 ,混交林的林分蓄积量、生物量分别比杉木纯林提高了 42 .82 %和 5 7.0 8% .但现实保存密度偏大 ,种间竞争剧烈 ,混交林分结构不够稳定 ,急需通过适当的间伐以改善种间关系 ,调整林分结构 .杉木红锥人工混交是改造杉木低产林、防治地力衰退及扩大优良乡土阔叶树种种植范围的有效途径之一 ,可在适宜区进一步推广营造

After the investigation and study of the native soil broadleaf trees resources in the mountain area of Southestern Zhejiang, this essayed preliminarily cull 110 kinds of fine native broadleaf trees, besides, it also introduced 22 kinds precious native soil broadleaf trees for forestry workers and garden afforesting units to refer to and exploit.

通过对浙西南山区阔叶树种资源的调查及研究 ,初步筛选出 110种优良的乡土阔叶树种。同时 ,重点介绍了 2 2种珍贵的乡土阔叶树种 ,供林业生产者和园林绿化单位参考利用。

Betula alnoides Buch.-Ham.ex D.Don is an indigenous hardwood species in tropical and warm subtropical zones in China.It is of great ecological and economic value,and is the most popular native hardwood species in these zones with plantation area more than fifty thousand hectare up to date.Here previous studies on B.alnoides are reviewed at aspects of biological and ecological properties,cultivation techniques,collection,conservation and utilization of genetic resources,and ecological benefits of plantations...

Betula alnoides Buch.-Ham.ex D.Don is an indigenous hardwood species in tropical and warm subtropical zones in China.It is of great ecological and economic value,and is the most popular native hardwood species in these zones with plantation area more than fifty thousand hectare up to date.Here previous studies on B.alnoides are reviewed at aspects of biological and ecological properties,cultivation techniques,collection,conservation and utilization of genetic resources,and ecological benefits of plantations of this species.The common problems in the proceeding of its plantation development are also assessed.Priority is pointed out for further researches on this species.The aim is to accelerate researches on B.alnoides for sustainable development of its plantations.

西南桦是我国热带、南亚热带地区的一个优良乡土阔叶树种,具有重要的生态和经济价值,目前推广面积已逾5万hm2,且仍呈良好的发展势头,已成为该地区造林面积最大的乡土阔叶树种。本文从生物学生态学特性,栽培技术,种质资源的收集、保存与应用以及人工林生态效益等方面回顾了我国以往西南桦的研究工作,评述了西南桦人工林大规模发展过程中出现的问题,并就其解决办法提出建议,据此提出了未来优先研究方向。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关优良乡土阔叶树种的内容
在知识搜索中查有关优良乡土阔叶树种的内容
在数字搜索中查有关优良乡土阔叶树种的内容
在概念知识元中查有关优良乡土阔叶树种的内容
在学术趋势中查有关优良乡土阔叶树种的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社