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林木根系生长
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  “林木根系生长”译为未确定词的双语例句
     Characteristics of root growth in fast-growing and high-yield poplar plantations under subsurface drip irrigation.
     地下滴灌条件下杨树速生丰产林林木根系生长特性
短句来源
     1. Rhizosphere is the environment that roots directly confronted, which is quite different from the common soil because of the interference of roots, so tree roots had the effect of inhibition on phosphorus immobilization to a certain extent.
     1.林木根系生长所形成的土壤环境能在一定程度上减少土壤对磷的固定,增加了磷的有效性。
短句来源
     Root growth in soil can decrease phosphorus immobilization,as both the immobilization amount and its rate appear low in rhizosphere and high in unrooted bulk soil.
     林木根系生长能在一定程度上降低土壤磷的固定作用 ,因此土壤磷的固定量和固定率从小到大依次为根际土、根区土、非根区土。
短句来源
     The growth status of the root system of forest trees grown on both micro_topographies sites indicated that on the smooth highland in the draught,the distribution of the root system was deep,the numbers were large,the structure was concentrated,and the absorptive network was developed,which was conducive to evade the atmospheric aridity and soil aridity.
     2种微地形条件林木根系生长状况 ,风口前沿高地林木根系分布深、数量多、结构密集、吸收根系网络发达 ,有助于逃避大气干旱和土壤干旱。
短句来源
     The characteristics of root growth in the fast-growing and high-yield plantations of I-214(Populus euramericana cv.'I-214') poplar under subsurface drip irrigation(SDI) and normal irrigation(NI) on sandy soil of Chaobai River in Beijing were studied.
     在北京潮白河沙地意大利214杨人工林中,对地下滴灌和常规灌溉下林木根系生长特点进行了研究.
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  相似匹配句对
     2# potassium chitosan phosphate can promote Salix babylonica's root growth.
     促进柳枝根系生长
短句来源
     advance the growth of root system and dry matter accumulation;
     促进根系生长,促进分蘖;
短句来源
     Tree Form Factor Growth Regularity
     林木主干形质生长
短句来源
     Study on the Constitutive Relation of Forest Root System
     林木根系本构关系
短句来源
     Characteristics of root growth in fast-growing and high-yield poplar plantations under subsurface drip irrigation.
     地下滴灌条件下杨树速生丰产林林木根系生长特性
短句来源
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  tree root growth
Carbon allocation between tree root growth and root respiration in boreal pine forest
      
Influence of soil gas contamination on tree root growth
      
Most tree root growth models assume a decreasing fine root density with depth and distance from the tree stem.
      
A third soil attribute critical to tree root growth is a developed structure.
      
Costs due to conflicts between street tree root growth and hardscape.
      
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The Changes of near ground temperature?near ground pure radiation?soil heat feux and ground temperature of Ledum-Larix genlini virgin forest in growing season were analyzed in the paper.The results show that the soil heat and the depth of the melted soil affected the growth of plant roots,especially the tree roots.

本文分析了杜香落叶松原始林内近地面气温、近地面净辐射、土壤热通量和地温等因子在生长季的变化 ,说明土壤热量状况的变化规律以及冻土的最大可融化深度对森林植物根系特别是对林木根系生长的影响

The phosphorus immobilization of forest soils from the hilly region of southern Jiangsu,China was studied.The results show that with strong phosphorus immobilization capabilities,forest soils can immobilize a great amount of applied phosphorus.Root growth in soil can decrease phosphorus immobilization,as both the immobilization amount and its rate appear low in rhizosphere and high in unrooted bulk soil.Organic acids have a great effect on phosphorus mobilization with humic acid stronger than simple organic...

The phosphorus immobilization of forest soils from the hilly region of southern Jiangsu,China was studied.The results show that with strong phosphorus immobilization capabilities,forest soils can immobilize a great amount of applied phosphorus.Root growth in soil can decrease phosphorus immobilization,as both the immobilization amount and its rate appear low in rhizosphere and high in unrooted bulk soil.Organic acids have a great effect on phosphorus mobilization with humic acid stronger than simple organic acids.Significant P mobilization is observed under additions of humic acid at 2 0 g·kg -1 ,and citric acid and tartaric acids at 4 0 g·kg -1 respectively.Therefore,fertiphos application with rational amount of organic acid can effectively increase the fertiphos efficiency by decreasing phosphorus immobilization in forest soils.

采用室内模拟试验研究了采自苏南丘陵的两种森林土壤磷的固定特性。结果表明 :苏南丘陵森林土壤磷的固定作用强 ,磷的固定量大。林木根系生长能在一定程度上降低土壤磷的固定作用 ,因此土壤磷的固定量和固定率从小到大依次为根际土、根区土、非根区土。有机酸对土壤磷的固定有较大影响 ,其影响作用从大到小依次为腐殖酸、柠檬酸、酒石酸。腐殖酸加入量为 2 0g·kg-1、柠檬酸和酒石酸的加入量均为 4 0g·kg-1时 ,对土壤磷的固定具有较强抑制作用 ;但有机酸用量过多时 ,对磷素固定的抑制作用反而减弱。因此 ,在森林土壤上使用磷肥时 ,应与适量的有机酸混合施用 ,以减少土壤磷的固定 ,提高肥效

This study was carried out on the dry sandy land in the draught facing the sea in Chishan Forest Farm of Dongshan County,Fujian Province since May,2000.Through the experimental study for 3 years,3 clones of Hui 1+#,Yue 701+# and Dong 9801+#, whose preserving rate for the afforestation reached 61.9%~69.5%,were selected from 7 tested clones.Thus,the significant breakthrough has been achieved in the respect of selecting plant materials for the afforestation on sites with such special difficulty.By means of the...

This study was carried out on the dry sandy land in the draught facing the sea in Chishan Forest Farm of Dongshan County,Fujian Province since May,2000.Through the experimental study for 3 years,3 clones of Hui 1+#,Yue 701+# and Dong 9801+#, whose preserving rate for the afforestation reached 61.9%~69.5%,were selected from 7 tested clones.Thus,the significant breakthrough has been achieved in the respect of selecting plant materials for the afforestation on sites with such special difficulty.By means of the comparative analysis of the planting effects of Casuarina equisetifolia clones on 2 types of micro_topography sites of the forward position of highland and the back_edge of low_lying land of the sandy land in the draught of bordering on the sea, the preserving rate of trees planted on the latter site for afforestation raised by 5%,and forest trees grew faster.The growth status of the root system of forest trees grown on both micro_topographies sites indicated that on the smooth highland in the draught,the distribution of the root system was deep,the numbers were large,the structure was concentrated,and the absorptive network was developed,which was conducive to evade the atmospheric aridity and soil aridity.It also revealed the tendency of a negative correlation between the distribution depth,quantity, concentrated degree and network structure of the root system and the moisture content of the soil.The study showed that the mechanism of the planting survival on the dry sandy land in the draught was the physiology and morphological characteristics of forest trees forming the enormous and developed root system network so as to be suitable for the dry habitat and to guarantee the planting survival.The experimental results of different planting modes showed that the planting modes of clump,mass,etc.may raise the preserving rate by about 10%,thus possess the extensive popularization and application value in the productive practice.

从 2 0 0 0年 5月起在福建省东山县赤山林场临海风口干旱沙地进行 3年试验研究 ,从 7个参试无性系中选择惠 1#、粤 70 1#、东 980 1#等 3个造林保存率达 6 1 9%~ 6 9 5 %的无性系 ,在此类特殊困难立地防护林植物材料选择方面取得突破。通过对风口沙地前沿高地和后沿低洼地 2种微地形条件木麻黄无性系造林效果的比较分析 ,后者造林保存率提高约 5 % ,且林木生长较快。 2种微地形条件林木根系生长状况 ,风口前沿高地林木根系分布深、数量多、结构密集、吸收根系网络发达 ,有助于逃避大气干旱和土壤干旱。并揭示根系分布深度、数量、密集程度、网络结构与土壤含水率大体呈负相关的趋势。研究揭示 ,风口干旱沙地造林成活的机制 ,是由于林木形成发达、庞大的根系网络的生理和形态特性 ,以适应干旱生境和保证造林成活。不同造林方式的试验结果表明 ,丛状、团状等植生组造林方式可提高保存率约 10 % ,在生产实践上有推广应用价值。

 
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