查询词典 soils

The findings are as follows:①soils rich in 2∶1 clay minerals which have lower binding energy are readily to desorb ...

土壤干湿变化对钾素转化的影响因速效钾含量的高低而有明显的区别。

Both methods are time- and solvent-consuming during the processing. In this study, headspace solid-phase dynamic extraction was applied to exame 13 organochlorine pesticides (γ-HCH、heptachlor、δ-HCH、aldrin、heptachlor epoxide、o,p'-DDE、α-endosulfan、p,p'-DDE、dieldrin、endrin、o,p'-DDT、β-endosulfan、p,p'-DDT) in water and soils. That was a rapid, solvent free and no clean-up procedures technology.

本研究以近年发展之顶空微针动态抽取技术(Headspace solid-phase dynamic extraction， HS-SPDE)进行水及土壤中十三种有机氯农药(γ-HCH、heptachlor、δ-HCH、aldrin、heptachlor epoxide、o，p'-DDE、α-endosulfan、p，p'-DDE、dieldrin、endrin、o，p'-DDT、β-endosulfan、p，p'-DDT)检测方法建立，此技术为一无需溶剂萃取，不需净化之快速检测方法。

It is estimated, in a 50,000 earthworms year can make the about 18 ton fine soils on acre land.

据估计，50000条蚯蚓一年内能在一英亩的土地上制造大约18吨的优良土壤。

It occurs as an exchangeable base in the clay mineral and organic fractions of soils.

钙是以交换性盐基在粘土矿物及土壤的有机部分出现的。

Soil samples were collected from protected fields in Yuhong District of Shenyang, Liaoning Province, China, for determination of exchangeable acid, exchangeable base and pH, and further analysis of acidification characteristics of the soils and relationships of soil pH with the other two.

在辽宁省沈阳市于洪地区采集保护地及其相邻露地旱田土壤样品，测定土壤交换性酸、交换性盐基离子组成和土壤pH，研究保护地土壤酸化特征以及土壤pH与潜性酸、交换性盐基的关系。

Soils from the study sites show the typical characteristics of an Andisol, being strongly acidic, with fewer exchangeable cations, a low base saturation, and an accumulation of soil organic matter with Al-compounds which are recalcitrant to decomposition. Therefore, the effects of vegetation types on the contents of SOM, TC, TN, and CEC were not significant.

本试验区为典型的火山灰土壤，土壤呈极强酸性，可交换性阳离子浓度与盐基饱和度极低，加以腐植质与活性铝形成不易为微生物分解的复合物，造成大量有机质聚积，因此不同天然植被对土壤有机质、碳氮浓度及CEC之影响均不显著。

In the soils of orchards, the problems such as stronger acidity, higher mass fractions of readily available Fe, lower mass fractions of exchangeable base and deficient trace elements Cu, Zn were found, however, mass fractions of soil were optimum.

柑橘园土壤存在酸性过强、有效Fe含量较高、交换性盐基含量严重偏低的问题；土壤有机质，速效P，水解N含量适宜，而有效Cu，Zn含量缺乏。

And, the proportion of H(superscript +) in exchangeable acid showed a reverse trend. 2 Exchangeable bases, especially exchangeable Mg(superscript 2+), K(superscript +) and Na(superscript +), in various layers of the soils in the protected fields were much higher than those in the control, not only in content, but also in saturation, whereas soil exchangeable Ca(superscript 2+) did not vary much, but the base saturation and exchangeable Ca(superscript 2+) saturation decreased significantly.

2保护地各土层土壤交换性盐基总量较露地相应层次土壤均有所增加，其中交换性Mg(上标 2+)、K、Na含量均高于露地，而交换性Ca(上标 2+)含量变化不明显；保护地各土层土壤交换性Mg(上标 2+)、K、Na饱和度较露地相应层次土壤均有所增加，但盐基饱和度、交换性Ca(上标 2+)饱和度下降明显。

In view of △F, the natural tendency of acidification as a result of aluminium transformation in red soils was further proved in thermodynamics, and the energy characteristics for exchange-adsorption of aluminum and potassium by calcium ion was revealed.

从热力学角度进一步论证了红壤铝质化即酸化的自然趋势，并揭示了钙与铝、钾离子交换吸附的能量特征。

Sand mineralogy of soils constitutes varying proportions of mica, quartz and feldspars.

砂质土壤矿物质由各种比例的云母、石英和长石组成。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。