查询词典 soils

The results showed that PSB and organic fertilizer could promote the growth of actinomyces, heterotroph bacteria, azotobbacter, ammonifying bacteria and nitrobacteria significantly, and restrain the growth of denitrifying bacteria in the soils.

结果表明，光合细菌和有机肥显著促进土壤中放线菌、异养细菌、固氮菌、氨化细菌和硝化细菌的生长，而抑制反硝化细菌数量。

With the rapid development of scale swine-farms in China, the swine waste which was brought by intensive hoggery was disposed in farmland soils around swine farm region.

我国规模化养猪业发展迅速，集约化养猪场所产生的废弃物大多由养猪场附近的农田土壤消纳。

Secondly, enrichment of 13C and 15N and their combination with NMR spectroscopy can help us study not only the dynamics of decomposition of organic materials but also the changes of their chemical structures during the turnover of the organic materials, which can provide more information in clarifying the C and N cycling and humification of the organic materials applied to soils.

本文根据已收集到的部分资料，对13C标记技术在土壤和植物营养中的应用情况作一简要综述，并在此基础上讨论了13C加富标记技术在研究植物光合作用、光合产物的去向以及标记秸杆在土壤中的分解等方面的应用及其注意点，旨在能为国内开展这方面的工作提供十分有用的参考

In this thesis, the present situation of heavy metals pollution and the physical and chemical properties of soils and the enrichment situation of heavy metals (Cd、 Hg、 Pb and Cr) in the vegetable body in the Harbin city greenbelt was investigated and evaluated. The results were showed as follows:The four heavy metals all polluted greenbelt soil by different degree in Harbin. The pollution of hydrargyrum is the most serious and reaches to the heavy pollution. The next pollution is plumbum, cadmium and chrome.

本文针对哈尔滨市区城市绿地重金属污染状况、土壤的理化性质，以及重金属(Cd、Hg、Pb和Cr)在植物叶片的富集情况进行了分析，并且对哈尔滨市区重金属污染状况进行了综合评价，结果表明：(1)哈尔滨市绿地土壤表层这四种重金属都有不同程度的污染，其中以汞的污染最为严重，达到了重污染；其次是铅和镉，铬的污染较小。

The compound pollution sign exists in the soil between total cadmium, total hydrargyrum, total plumbum and chrome. The prominent correlation exists in total cadmium and total plumbum. The correlation coefficient is very lower between heavy metals in the vegetable body. The correlation coefficient is very prominent between cadmium and plumbum in the vegetable body. The correlation between vegetable and soils heavy metal content of the cadmium is very prominent and others is very lower.

土壤中全镉、全汞、全铅和全铬这四种重金属之间存在着复合污染的迹象，其中全镉和全铅存在极显著的相关性；植物体内重金属之间的相关系数很低，只有镉和铅具有显著相关性；植物和土壤重金属含量的相关关系只有镉的含量呈显著关系，其它相关性较低。

The hydrogen ion is a positively charged hydrogen atom. Soils may vary from a pH of 4.5 to 9.

氢离子是一个带正电荷的氢原子）土壤pH值从4.5变化到9。

If the soil sample contains an insignificant portion of particals smaller than 0.074mm, as is often the case with cohesion less soils and disintegrated rocks, the hydrometer 0.074 analysis can be omitted.

如果土壤样本中小于0.074毫米的颗粒部分微不足道（无内聚力的土壤和松散的岩石通常就是这种情况），就可以进行比重计分析。

In this paper, two types of transport models widely used for water and salinity in soils are introduced; one is physical models, which include convection-dispersion Equation, stream tube model and HYDRUS developed by US Salinity Laboratory. At the same time, the parameter research is related to physical models. Another is system models, such as Transfer Function Model and BP-Network model. The resemblances and the differences among these modeling are compared and analyzed.

介绍了国内外目前应用较为广泛的几种水盐运移模型，包括对流－弥散模型、流管模型和美国国家盐渍土改良中心开发的HYDRUS模型等3种物理模型以及相关的模型参数研究；两种系统模型：传递函数模型和BP人工神经网络模型。

A hyperbola model was proposed and verified based on tests, which well describes deformation behavior of liquefied sandy soils.

基于试验提出了一个可以较好的描述砂土液化后变形特性的双曲线模型，并对模型进行了验证。

The hypsography affects the movement of surface and underground runoff, along with it water and salt content in soils are redistributed and accumulated.

地形的高低起伏，影响地面、地下径流的运动，土壤中的水分和盐分也就随之重新分配和积累。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失