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林木营养
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  tree nutrition
     THE RELATIONSHIP BETWEEN TREE NUTRITION ANDPESTS——HOW DIFFERENT CULTIVATION MEASURES AFFECTPOPLARS RESISTANCE TO PESTS
     林木营养与虫害——杨树不同栽培措施的抗虫效应
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     RELATIONSHIP BETWEEN TREE NUTRITION AND INSECT PESTS:THE EFFECT ON RESISTANCE TO INSECTS AFTER NITROGENFERTILIZER APPLICATION TO PINUS TABULAEFORMIS
     林木营养与虫害——油松施氮肥的抗虫效应
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     This article dealt with the correlation between the nutrient contents of N,P,K,Ca,Mg,Cu,Zn,Mn,Fe in foliages and the height growth, current height growth, and the growth of DBH of young Chinese fir plantation during the first and second rotation grown under hill site conditions. Then the scientific basis was provided for increasing timber yield and preventing and curing soil fertility degradation from the angle of forest tree nutrition.
     本文重点论述丘陵立地条件下 ,1、2代杉木幼龄林高生长、当年高生长、胸径生长与叶片中营养元素N、P、K、Ca、Mg、Cu、Mn、Zn、Fe含量的相关关系 ,进而从林木营养这个角度 ,为提高林木产量、防治地力衰退提供可靠的科学依据。
短句来源
  tree nutrient
     Research Advance in Genetics and Genetic Improvement of Forest Tree Nutrient
     林木营养遗传和改良研究进展
短句来源
     STUDY ON THE METHODS OF TREE NUTRIENT DIAGNOSIS
     林木营养诊断方法的研究
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  “林木营养”译为未确定词的双语例句
     STUDY ON NUTRIENT CHARACTERISTICS OF THE FOREST TREE IN A LOBLOLLY PINE PLANTATION
     火炬松人工林林木营养特性的研究
短句来源
     Research progress and prospect on nutrient characteristics of forest tree
     林木营养性状的研究进展与展望
短句来源
     Aiming at diseases and pests of massons pine, we set up 20 sample plots in Tieshanping forest farm in Chongqing city. Based on them, we have analyzed the inner relationship between diseases and pests and the factors of forest ecological system and management measures, then found out the main causes of the occurrence of diseases and pests, and optimized ecology control measures of main forest diseases and pests.
     本研究在重庆市铁山坪林场,针对马尾松病虫害建立20 块固定标准地,并对标准地进行生态环境因子、林分因子、林木营养状况、林业经营措施、病虫害发生情况等的综合调查,在此基础上统计分析森林病虫危害与各因素之间的内在联系,明确病虫害发生的主要动因,优化出主要森林病虫灾害的生态控制措施。
短句来源
     Researches of mixed inoculation of VA and ecto mycorrhizal fungi have been focused on the association between the two fungi and their influence on growth of forest trees. Up to now, there were a few of researches on the influence of mixed inoculation of the mycorrhizal fungi on nutrient status and physiological resistance of forest tree.
     国内外对 VA菌根与外生菌根混合接种的研究 ,多集中在两种菌根的关系及其对林木生长的影响方面 ,但有关菌根混合接种对林木营养、抗逆生理的影响 ,则很少有人研究。
短句来源
     This paper reviews the results of research on localization, identification and major characterization of vegetative storage proteins in woody plants.
     着重论述了林木营养贮藏蛋白质的合成、转移、降解机理及基因表达与调控等方面的最新研究进展 ;
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  相似匹配句对
     FOREST FERTILIZATION AND NUTRIENT DIAGNOSIS
     林木施肥与营养诊断
短句来源
     STUDY ON THE METHODS OF TREE NUTRIENT DIAGNOSIS
     林木营养诊断方法的研究
短句来源
     Environmental Nutrition
     环境营养
短句来源
     Estimation for property of forest-crop.
     林木资产评估
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     the nutritional function;
     营养作用 ;
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  tree nutrition
Additionally, (ii) it provides a tool to easily identify various types of temporal changes in tree nutrition as e.g.
      
Tree nutrition clearly reflected the main soil chemical gradient, and P, N and Fe deficiencies were found in transparent stands, which had markedly smaller needles.
      
Subsequent modification to light and soil conditions presumably affects nutrient availability and cocoa tree nutrition.
      
Vector analysis was employed to diagnosis tree nutrition.
      
The significance of the weathering processes observed is considered in relation to forest tree nutrition and soil formation
      
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  tree nutrient
It appears that the maintenance of long-livedfoliage in black spruce does not provide for greater flexibility in tree nutrient allocation.
      
The influence of alternate bearing on nutrient utilization and total tree nutrient content was investigated in mature pistachio (Pistacia vera L.
      
Tree nutrient contents and, presumably, the size of nutrient storage pools in dormant trees varied between 'on' and 'off' years.
      
Relative species ranking in above-ground tree biomass (Pinus resinosa>amp;gt;Populus>amp;gt;Picea>amp;gt;Pinus banksiana) and above-ground tree nutrient (N, P, K, Ca, Mg) weights (Populus>amp;gt;Picea>amp;gt;Pinus resinosa>amp;gt;Pinus banksiana) were similar on both soils.
      
Special emphasis was put on determining the importance of different fluxes, especially the internal cycle within the trees in satisfying the tree nutrient requirements for biomass production.
      
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1、The constitution of the quick-growing and good harvest forest of Populus canadensis consists of the form of planting composition and planting distance. It de- termines the nursing and leaves' space, large or small, of forest tree, hence it in- fluences the amount of out-pat aud quality of timbers. There are differeut opinions to the proper constitution. To study it is very important. 2、In foreign countries the constitution of poplar forest is quite different. The form of planting is sometimes square or rectangle....

1、The constitution of the quick-growing and good harvest forest of Populus canadensis consists of the form of planting composition and planting distance. It de- termines the nursing and leaves' space, large or small, of forest tree, hence it in- fluences the amount of out-pat aud quality of timbers. There are differeut opinions to the proper constitution. To study it is very important. 2、In foreign countries the constitution of poplar forest is quite different. The form of planting is sometimes square or rectangle. Some countries adopt close plant- ing, and others adopt open. In general, square and rectangle are adopted in artificial forest of Populus canadensis, while triangle planting is rearly used. A tendeucy is to use close planting. There are 400 to 40,000 planting thocks in per hectare. The difference is 100--times. 3、The rational close planting of Populus canadensis is right triangle aud square, because in such condition the orown may be normally developed, and striaght bole maintained. In the oircumstances of the same planting distance, the right triangle planting site produces 15.5% more products than thesquare (planting). Populus canadesis is a very intolerant species with high adaptability and de- mands water more than fertilizer. As the climatical and soil conditions are favourable, especially water is available and guaranteed, the density of planting may be deter- mined according to the following factors: (1) In eccordance with the table of the average height and diameter of tree in relating to the planting distance, at the first intermittent cutting, to resolve the planting distance: As the average height and diameter of the tree is known, at the first intermittent cutting, the corresponding rational distance of the first planting will be then easy found out from the table. on the other hand, the square value of the normal growing crown is used as a standard to determine the nursing spare and planting distance. In the mean time the first intermittent cutting year may be ob- tained. (2) To find out the rational close of planting by means of the soil fertility and the intensity of managenient: When the condition of soil fertility and water is suitable and the intensity of management is high, the trees grow fast the crown clo- sure is quick, open stocked in first planting is all right, dsing 3.5 × 4--6 × 6 M. in distance. If the condition of site is not good the site should be planted first close then open, using 1.3 × 1 .5--3 × 3 M. in distance promoting the crown in early closure, then thinning and transplanting the seedlings to the open site or plan- ting shrubs or farm crops between the rows of planting. (3) To find out the rational close of planting by means of the year and stan- dard of planting stocks: At the same conditions of site and management, one year seedlings or slips are used in close planting. While 2--3 year seedlings, 3--4 meters in height, are used in open planting. First close planting then open, as the plant- ing stocks grow 1--2 years 1ater, the dense stocked seedlings should be thinned and transplanted in the near by planting area. Then both sites become open stocked forests.

加拿大杨速生丰产林的结构应着重研究杨林的配置方式和造林密度,因为它决定林木营养面积和叶面积你大小,从而影响椽木的产量和质量。作者建议采用正三角形或正方形配置,提倡稀植,每公顷277—714株,或者先密后稀,早期疏开。确定造林密度的因子,首先是依据第一次间伐时平均树商、平均胸径号造林密度关系表”确定造林密度,同时试用冠幅的平方值,作为计算林木营养面积的依据;第二是依据土壤肥力(特别土壤水分)专经营强度确定造林密度;第三是依据苗木年龄及规格确定造林密度。稀植加杨林,15年成林时,预计高达22米,胸径35厘米,每公顷木材蓄积量240—360立方米。

1、The constitution of the quick-growing and good zharvest forest of Populus canadensis consists of the form of planting composition and planting distance.It de- termines the nursing and leaves'space,large or small,of forest tree,hence it in- fluences the amount of out-put and quality of timbers.There are different opinions to the proper constitution.To study it is very important. 2、In foreign countries the constitution of poplar forest is quite different.The form of planting is sometimes square or rectangle.Some...

1、The constitution of the quick-growing and good zharvest forest of Populus canadensis consists of the form of planting composition and planting distance.It de- termines the nursing and leaves'space,large or small,of forest tree,hence it in- fluences the amount of out-put and quality of timbers.There are different opinions to the proper constitution.To study it is very important. 2、In foreign countries the constitution of poplar forest is quite different.The form of planting is sometimes square or rectangle.Some countries adopt close plant- ing,and others adopt open.In general,square and rectangle are adopted in artifioial forest of Populus canadensis,while triangle planting is rearly used.A tendency is to use close planting.There are 400 to 40,000 planting stocks in per hectare.The difference is 100-times. 3、The rational close planting of Populus canadensis is right triangle and square, because in such condition the crown may be normally developed,and striaght bole maintained.In the circumstances of the same planting distance,the right triangle planting site produces 15.5% more products than thesquare (planting). Populus canadesis is a very intolerant species with high adaptability and de- mands water more than fertilizer.As the climatical and soil conditions are favourable, especially water is available and guaranteed,the density of planting may be deter- mined according to the following factors: (1)In accordance with the table of the average height and diameter of tree in relating to the planting distance,at the first intermittent cutting,to resolve the planting distance:As the average height and diameter of the tree is known,at the first intermittent cutting,the corresponding rational distance of the first planting will be then easy found out from the table,on the other hand,the square value of the normal growing crown is used as a standard to determine the nursing space and planting distance.In the mean time the first intermittent cutting year may be ob- tained. (2)To find out the rational Close of planting by means of the soil fertility and the intensity of management:When the condition of soil fertility and water is Suitable and the intensity of management is high,the trees grow fast the crown clo- sure is quick,open stocked in first planting is all right,using 3.5×4-6×6M. in distance.If the condition of site is not good the site should be planted first close then open,using 1.3×1.5-3×3M.in distance promoting the crown in early closure,then thinning and transplanting the seedlings to the open site or plan- ting shrubs or farm crops between the rows of planting. (3)To find out the rational close of planting by meaus of the year and stam- dard of planting stocks:At the same conditions of site and management,one year seedlings or slips are used in close planting.While 2-3 year seedlings,3-4 meters in height,are used in open planting.First close planting then open,as the plant- ing stOcks grow 1-2 years later,the dense stocked seedlings should be thinned and transplanted in the near by planting area.Then both sites become open stocked forests.

加拿大杨速生丰产林的结构应着重研究杨林的配置方式和造林密度,因为它决定林木营养面积和叶面积的大小,从而影响林木的产量和质量。作者建议采用正三角形或正方形配置,提倡稀植,每公顷277—714株,或者先密后稀,早期疏开。确定造林密度的因子,首先是依据第一次间伐时平均树高、平均胸径与造林密度关系表”确定造林密度,同时试用冠幅的平方值,作为计算林木营养面积的依据;第二是依据土壤肥力(特别土壤水分)与经营强度确定造林密度;第三是依据苗木年龄及规格确定:造林密度。稀植加杨林,15年成林时,预计高达22米,胸径35厘米,每公顷木材蓄积量240—360立方米。

By the comparative analysis of semi-location .the effects after beening polluted soil nutritions, contents,state and distribution were diseussed .The results showed that the pH value of the forestland elevated obviously and the total amount of salt increased also.The contents of the total nitrogen. the effective phosphorus and the total phosphorus all reduced.This variation was very obviously in rhizosphere soil.So.the forestland soil pollution could make the nutrition and the effectiveness reduce and the...

By the comparative analysis of semi-location .the effects after beening polluted soil nutritions, contents,state and distribution were diseussed .The results showed that the pH value of the forestland elevated obviously and the total amount of salt increased also.The contents of the total nitrogen. the effective phosphorus and the total phosphorus all reduced.This variation was very obviously in rhizosphere soil.So.the forestland soil pollution could make the nutrition and the effectiveness reduce and the nutrition inbalance also.

通过半定位对比分析,探讨林地污染后对土壤养分及林木组织中养分含量、状态、分配的影响。研究表明,林地土壤污染后,林地土壤pH伍明显升高,土壤全盐量增加,土壤及林木组织中营养元素全氮、有效氮、全磷、有效磷含量均减少,这种变化在根际土壤中表现最明显,故林地土壤污染可使土壤养分减少,有效性降低,林木营养失调,生长受抑或死亡。

 
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