查询词典 soils

Finally, it was proved that the formula for the lateral soil pressure could be used to soil nailing walls with different cut slope angles for both cohesive and noncohesive soils.

实例计算结果表明：建立的土钉墙侧向土压力计算公式适用于不同放坡角度的土钉墙，不但适用于无黏性土，同样适用于黏性土。

In a word ,alterative freezing and thawing could accelerate nonexchangeable k releasing in soils.Its release quantity and velocity were higher obviously than the condition of 25 ℃ and its releasing time kept longer.

总体来说，冻融交替处理可以加速土壤中的非交换性钾素的释放，无论是在释放量上，还是在释放速度上，都明显高于25℃恒温培养的处理，并且其释放时间持续长。

The results indicate that:① The quantity and velocity of the nonexchangeable potassium release from the loess soils are alike to sand soil,and are higher than the dark brown forest soil.

黑麦草、水稻和大米草生物耗竭试验证明，生物吸钾量中23.4%～87.0%的钾素来自层间钾，非交换钾是土壤钾库中对作物钾营养起重要作用的组分［4～6］。

Owing to the planting and fertilizing,the proportions of soilavailable K,nonexchangeable K and mineral K in soil total Kcontent has changed.On different soils,this change have differenttendency.

由于人为的耕作和施肥，供试土壤中的速效钾、缓效钾和矿物钾在土壤全钾中的比例发生了相应变化，且两种土壤的变化不一样。

Items of pH, soil solution K, exchangeable k, nonexchangeable K and potassium fixation index were all determined after incubation. The results indicated similar extent and trends of transformation among three K forms, that is, decreasing content of soil solution K and exchangeable K but increasing nonexchangeable K level were observed in both CaCO3 and SrCO3 treatments of two soils. As to CaCl2.2H2O addition, pH increase was not found and the change of three K forms was not significant when application rate raised.

结果显示CaCO3的添加，除能提升土壤pH值外，亦能使土壤中三种型态钾(溶液性钾，交换性钾，非交换性钾)有显著的改变，且改变程度及趋势均甚为相似，而CaCl2.2H2O的添加不会造成土壤pH的改变，且三种型态钾并不随CaCl2.2H2O用量的增加而有显著改变的现象。

Corn seedling were grown for 5 harvests in pot experiments to evaluate potassium supplycapacity of the soils.Results indicated that when soil avaliable potassium decreased,the dryplant matter was firstly affected,secondly was the total uptake of potassium by plant,then was thepotassium content in plant.Exchangeable,nonexchangeable and mineral potassium wereavaliable for plant,but the contribution of each potassium form was depended on soil types.

本文在研究褐土、潮土不同层次土壤的供钾特性、土壤各形态钾素的动力学行为以及小麦根系对钾素的吸收动力学特征的基础上，以玉米幼苗从土壤中的吸钾量为对照，考察了土壤钾素动力学特征与土壤钾素生物有效性的关系，运用热力动力学理论建立了土—根系统中的钾素能态链，并确立了土壤钾素生物有效性的能态指标。

The results calculated by the Elovich rate equation showed that K release rates from 1 mol.L-1 HNO3 extraction ＞those from 2 mol.L-1 HNO3 extraction ＞those from H-resin extraction. Elovich equations combining with the data of H-resin and 2 mol.L-1 HNO3 successive extraction could well described the release characteristics of soil K. The correlation coefficients of the equations reached most significant levels (r＝0.956**—0.999**), and standard errors of specific K release capacities between the vaules calculated by the equations and those measured by both successive extractions were smaller(s=1.61 and 3.52). The specific release rates of soil K calculated by the Elovich rate equations were significantly correlated with the indices of soil K availability (the amounts of easily available K, nonexchangeable K, total available K in soils and K absorbed by ryegrass).

研究结果表明：1 mol.L-1 HNO3提取法的释K速率＞2 mol.L-1 HNO3提取法的释K速率＞氢饱和交换树脂提取法的释K速率；氢质交换树脂和2 mol.L-1 HNO3提取法结合Elovich模型较理想地描述了土壤K素的释放特性，拟合方程的相关系数均达极显著水平(r＝0.956**-0.999**)，土壤特征累积释K量的计算值与实测值的标准差较小(s=1.61和3.52)，且通过速率方程计算的土壤特征释K速率与K素有效性指标(速效K、缓效 K、有效K及黑麦草总吸K量)的相关性也较为密切。

And the role of nonplastic fines content on the strength properties and steady-state behavior of sandy soils has been a topic of debate for some time.

迄今为止，细粒含量对砂土的强度特性和应力应变关系的影响在岩土界尚未形成共识。

In nonshrinking soils, the capillary potential derived mainly from capillary suction.

在非收缩的土中，毛细水势主要用毛细水吸力来推导。

The increased amount of non--exchangeable NH4^＋-N during the incubation indicated as the following tendency, namely, Eum-Orthic Anthrosols 〉 Los - Orthic Entisols 〉 Hap-Ustic Isohumisols 〉 Ust-Sandiic Entisols. Organic material influenced significantly the increased amount of non-exchangeable NH4^＋-N （P was 0.0002, 0.0004 and 0.0003 when incubated at 20 d, 50 d and 60 d, respectively）. NH4^＋-N increased remarkably when Stlpa bungeana and Medicago sativa were added compared with no addition. The contents of non-exchangeable NH4^＋-N increased significantly when added （NH4）2SO4 compared without addition at 20 d, 40 d and 60d of incubation and P was 0.0037, 0.0033 and 0.0027, respectively. It was the result that the NH4^＋-N from （NH4）2 SO4 was fixed within the soil. The increased amount of non-exchangeable NH4^＋-N increased significantly for different soils, on which different vegetation types grew before the collection of soil samples, when incubated at 20 d （P=0.0434）, but not significantly at 40 d and 60d （P=0.7378 and 0.5375）. The increased amount of non-exchangeable NH4^＋-N in the soil, on which crop straw and nitrogen fertilizer had been incorporated for a long-term period, was larger than that of no addition, but it was not significantly different among these two fertilization models. Soil clay, total N and organic matter were positively correlated remarkably with the contents of non-exchangeable NH4^＋-N, the increased amount of non-exchangeable NH4^＋-N had no correlation with soil clay, whereas it had significantly positive correlation with total N and organic matter.

培养期间非交换性NH4^＋-N的增加量均表现为以土垫旱耕人为土最大，其次是黄土正常新成土，简育干润均腐土和干湿砂质新成土较小；添加有机物料极显著影响培养期间的非交换性NH4^＋-N增加量（培养20d、40d和60d时P分别为0.0002，0.004和0.0003），表现为紫花苜蓿和长芒草土壤非交换性NH4^＋-N的增加量均极显著高于不添加有机物料的对照土壤；在培养20d、40d和60d时，加（NH4）2SO4土样非交换性NH4^＋-N的增加量显著大于不加（NH4）2SO4土样（户分别为0.0037，0.0033和0.0027），这是土壤对（NH4）2SO4中NH4^＋-N固定的必然结果；不同植被类型土壤培养20d时的非交换性NH4^＋-N增加量差异显著（P=0.0434），培养40d和60d时差异不显著（p分别为0.7378和0.5375）；长期秸秆和氮肥配施土壤非交换性NH4^＋-N增加量大于不施肥对照土壤，但差异不显著土壤黏粒、全氮和有机质与培养0d、20d、40d和60d时土壤的非交换性NH4^＋-N含量均呈极显著正相关；而非交换性NH4^＋-N的增加量与粘粒无相关性，但与全氛和有机质呈显著正相关。

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。