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plantation soil
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  人工林土壤
     Effects of species diversity of litter on the ecological functions of Cunninghamia lanceolata (Lamb.) Hook. plantation soil
     凋落物的树种多样性与杉木人工林土壤生态功能
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     Evolution Rule of Korean Pine Plantation Soil Quality
     红松人工林土壤质量演变规律
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     (2) The Fe and Mn elements in the plantation soil are closely correlated to the efficiency of P element, and the soil Mn has greater fixation effect on P under the condition of reduction.
     (2 )玄武岩桉树人工林土壤中的Fe、Mn与P素有效性关系密切 ,且在还原条件下的土壤Mn对磷的固定作用更大 ;
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     The results showed that the contents of plantation soil nutrients, Which from 0~60cm showed decline trend, and the difference fo soil nutrients, contents among every stand type is obvious except available Phosphorus.
     结果0~60cm土层的人工林土壤养分含量多呈下降趋势,除有效磷外,各林分类型间土壤养分含量差异显著
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  “plantation soil”译为未确定词的双语例句
     Cd? Ni and As were 61.7 mg·kg-1, 153.4 mg·kg-1, 33.7 mg·kg-1, 0.24 mg·kg-1, 28.7 mg·kg-1 and 4.2mg·kg-1 respectively; Four kinds of heavy metals (Cu?Zn?Pb and Cd) were the main pollution elements because of their accumulating trends in the vegetable plantation soil in the area.
     结果表明,Cu、Zn、Pb、Cd、Ni、As的平均含量分别为61.7、153.4、33.7、0.24、28.7和4.2mg·kg-1,Cu、Zn、Pb和Cd4种元素呈累积趋势,为该区域菜地土壤的污染元素。
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     Based on the quantitative relationship established between their respiration rate and temperature, the annual release of CO_2 from Chinese fir plantation soil was 10.517 t/(hm~2·a).
     同时得出杉木林地土壤呼吸速率与地下5cm温度呈显著正相关,建立了土壤呼吸速率与温度的回归方程,计算出杉木林地土壤的年呼吸量(CO2)为10.517t/(hm2.a)。
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     5.The contents of Cu, S in Chinese fir-tea intercropping plantation soil were little higher than those in pure tea plantation ,but the contents of Pb, Ni, Mn, Zn were lower.
     5.单作茶园土壤中Pb、Ni、Mn、Zn含量高于间作茶园,而Cu、S含量略低于间作茶园。
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     In 2002 and 2003(at the age of 5 to 7),about 588.40 kg·hm~(-2) of litter production was returned to the plantation soil,of which 17.54%,4.99%,and 1.13% were contributed by leaves,branches + barks,and reproductive parts of Chinese fir,and 64.34% and 12.01% were contributed by other plant litters and miscellaneous,respectively.
     hm-2,其中杉木叶占17.54%,枝与皮占4.99%,花与果占1.13%; 其他植物凋落物、杂物分别占64.34%和12.01%.
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     This paper presents an introduction to physical, chemical and biological indicators of soil quality on assessing the plantation soil sustainability
     对可用以评价人工林地土壤质量的物理、化学和生物学指标以及综合质量指数评价等方法做了介绍 ,为评价人工林可持续经营中保持土壤生产力标准下的指标选择、量化提供参考
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  相似匹配句对
     The Soil of Rubber Plantation in Yunnan
     云南橡胶园土壤
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     Soil acidity of Larix gmelini plantation.
     兴安落叶松人工林土壤酸度的研究
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     Soil Clock
     土壤钟——土壤肥力因素时间综合动态的模式
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     artificial soil.
     人造土,用以模拟田间土壤供小型土槽用。
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  plantation soil
Organic carbon diminution and estimates of carbon dioxide release from plantation soil
      
The occurrence of phosphate-solubilizing fungi in coconut plantation soil types was investigated.
      
Under these conditions, the rapid root growth and mycorrhiza formation stimulated by plantation soil increases the ability of seedlings to survive the first growing season.
      
Six weeks after planting, seedlings receiving plantation soil had formed 62% more root tips than controls; however, no statistically significant differences were apparent 15 weeks after planting.
      
obtusa plantation soil were different from that in the two shrub-type forest soils and in theSasa-type forest soil.
      


K content of Hevea leaves and the contents of total K, available K and unavailable K in rubber plantation soils developed from different parent materials in Hainan Island were measured. The results show that the content of K in the soils derived from basalt and shallow-sea deposits is very low with the total K (K_2O) less than 0.3%. The potassium supplying capacity of such soils is so poor that the rubber trees planted there suffer from K deficiency with their leaf-K content of only 0.75% or...

K content of Hevea leaves and the contents of total K, available K and unavailable K in rubber plantation soils developed from different parent materials in Hainan Island were measured. The results show that the content of K in the soils derived from basalt and shallow-sea deposits is very low with the total K (K_2O) less than 0.3%. The potassium supplying capacity of such soils is so poor that the rubber trees planted there suffer from K deficiency with their leaf-K content of only 0.75% or so. Thus it is necessary to apply K fertilizer to the soils. In contrast, total K and unavailable K in the soils developed from granite, gneissic-granite, arenaceous shale and limestone are relatively high, while available K is as high as over 100 ppm in some cases. Rubber trees planted on such soils are generally well supplied with K with their leaves containing 1-1.6% of K. Therefore K fertilizer is normally not needed unless the soil's N and P nutrients are very rich or the trees have been tapped for many years or they have been stimulated with chemicals for higher yield or the plantation has been replanted.

本文测定海南岛各地不同母质发育的橡胶园土壤全钾、缓效钾、速效钾及胶树叶片钾素养分含量,结果表明,由玄武岩、浅海沉积物发育的土壤其钾素含量都很低,全钾量常低于0.3%,这类土壤的钾素供应能力极低,生长在这类土壤的橡胶树钾素营养不足,叶片含钾量仅0.75%左右,必须施用钾肥。由花岗岩、花岗-片麻岩、砂页岩、石灰岩等发育的土壤全钾、缓效钾都较高,速效钾含量最高可达100ppm以上,生长在这类土壤的橡胶树钾素营养一般是丰富的,叶片含钾量在1%以上,甚至高达1.6%,因此,一般不需施用钾肥,只有在氮磷极丰富或胶树开割投产多年后,或施用刺激剂采胶以提高产胶量,或更新后土地再利用时才要适当施用钾肥。

Permanent sample plots were located under plantations in the Western Suburb of Beijing. There are three plantation soil types for the sample plots: (1) eluvial cinnamon soil under Finns bungeana plantation; (2) eluvial cinnamon soil under Pinus tabulaeformis plantation; (3) eluvial cinnamon soil under Platycladus orientalis plantation.Observation began in 1981 and ended in 1984. It has been found that the soil moisture content of the experimental plantation...

Permanent sample plots were located under plantations in the Western Suburb of Beijing. There are three plantation soil types for the sample plots: (1) eluvial cinnamon soil under Finns bungeana plantation; (2) eluvial cinnamon soil under Pinus tabulaeformis plantation; (3) eluvial cinnamon soil under Platycladus orientalis plantation.Observation began in 1981 and ended in 1984. It has been found that the soil moisture content of the experimental plantation field were 10~15 mm in growth season. It belongs to the sub-arid-wet soil moisture regime. Annual mean soil temperature .was 13℃, belongs to the temperate soil temperature regime. Seasonal variation of soil moisture and temperature were evident, annual variation (1981~1984) were not evident. Seasonal variation of soil CO2 content in the experimental plantation field were evident, but annual variation (1981~1984) were not evident. The variations of different stands in the experimental plantation fields were not evident enough.

北京西郊白皮松、油松、柏树林下土壤动态研究试验林地的土壤为非石灰性半干润淋溶褐土。这类土壤在北京西郊高位平原区具有广泛的代表性。定位观测从1981年开始至1984年结束。研究结果表明:试验林地生长季节土壤水分含量保持在10~15 mm左右,属季节性淋溶型的半干润土壤水分状况,年平均土壤温度13℃,属温性土壤温度状况;土壤水分、土壤温度的季节性变化明显,年变化不明显。试验林地土壤养分状况的年、季节性动态不甚明显,不同林分间的年、季节性变化也不甚明显,但干湿季节分明,林木生长季节与雨季同期,因此土壤条件基本能保证白皮松、油松、柏树林分正常生长的需要。

The situation of plantation soil fertility degeneration at home andabroad is summarized, the causes of plantation soil fertility degeneration are ap-proached and the research trends of a decline in Chinese fir (Cunninghamialanceolata Hook) plantation productivity are analyzed from the aspects of irra-tional cultivation measures, tree species characteristics and plantation ecosystemstructures in this paper. Meanwhile the countermeasures for the reform of culti-vation systems, the improvement...

The situation of plantation soil fertility degeneration at home andabroad is summarized, the causes of plantation soil fertility degeneration are ap-proached and the research trends of a decline in Chinese fir (Cunninghamialanceolata Hook) plantation productivity are analyzed from the aspects of irra-tional cultivation measures, tree species characteristics and plantation ecosystemstructures in this paper. Meanwhile the countermeasures for the reform of culti-vation systems, the improvement of stand structures, the protection and devel-opment of broadleaved forests, and for the control of Chinese fir plantation de-velopment scale are proposed as well in order to realize the sustained utilizationof forest land.

概述国内外人工林地力衰退情况,人工林地力衰退原因的探讨,从不合理的栽培措施、树种特性、人工林生态系统结构等方面分析了杉木人工林生产力下降的研究动态。提出改革栽培制度、改善林分结构、保护和发展阔叶林,控制杉木林的发展规模等对策,以实现林地持续利用。

 
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