查询词典 soil

The O2 concentration field of a cylindrical soil bed with winter wheat growing is obtained by means of steady numerical simulation, which shows that the soil O2 concentration has a close relation to the growing stage of the winter wheat, the porosity of the soil and the height of the soil bed , et al.

建立了一个描述土壤中热、湿、气耦合迁移的数学模型，对有冬小麦生长的圆柱形土壤床中的氧气浓度场进行了数值模拟。

In the unsterilized soil, the colonization of JMC1402P was affected by the physical and chemical factors of soil, and the aboriginal microbe would compete with it.The safety of releasing JMC1402P to the surrounding was tested, the design was as follows: mixing JMC1402P and R. huakuii JS5A16L, JMC1402P and Pseudomonas fluorescens Pf.X16L2 in filterable membrane, sterilized soil and unsterilized soil.

JMC1402P标记菌株释放环境的安全性研究表明，当JMC1402P与华癸中生根瘤菌JS5A16L、荧光假单胞菌Pf.X16L_2混合培养在微孔滤膜上、灭菌盆装土及田间三个环境中时，未检测到华癸中生根瘤菌JS5A16L和荧光假单胞菌Pf.X16L_2中有gfp基因编码的绿色荧光蛋白的存在，在X-GlucA作用下亦没有带有gusA基因的发光菌落。

In China,more and more constructions in cold regions appear,Strength and deformationof frozen soil,characteristics of frost heave and thaw collapse have become the major task forcold regional construction.But researches on mechanism of frost heaving are still not maturedowing to complexity of frozen soil,and the current study,thinking little of the freezing andthawing process,mostly focuses on the different physical and mechanical properties betweenfrozen soil and thawed soil.

随着我国寒区工程建设项目的增多，冻土的强度与变形问题以及冻胀融沉特性研究成为面临的最重要任务，但是由于冻土的复杂性，现有的冻胀机理相关研究尚不成熟，大多还是研究已冻土和融土物理力学性质差别，缺乏对正冻正融过程的相关研究。

The key of maintaining the tunnel stability lies on how to deal with the advance core soil ahead of working face, which is obtained on basis of analysis on the problems in high speed railway tunnels with big crosssections in soft surrounding rock or soil. Fullface prereinforcing method by fiberglass bolts can enhance the equivalent rigidity of the advance core soil and control the deformation of the advance core soil, so that arch effect can play its role naturally and assure the excavation safety.

总结分析了目前高速铁路大断面软弱围岩或土质隧道施工中存在的问题，认为如何处理好掌子面前方的"待挖核心体"是控制此类隧道整体稳定性的关键，运用沿隧道纵向全断面预加固的易切削玻璃纤维锚杆来提高"待挖核心体"的等效刚度，控制"待挖核心体"的变形，使得隧道周边的拱效应能自然发挥作用，可以保证隧道能够全断面安全、顺利开挖掘进。

The result also showed that return treatment is better than taken treatment within different treatments. 4. According to the experiment when the plant was harvested(In March 25th,2009), it was found that the rape with NPK treatment,especially with NPK-T treatment in Quaternary red soil and in granitization red soil, grew abnormality or dead in the centre of district(80%),which yield was extremely low,but had some to the remaining(20%) close to the cement ridge.Among the three types of parent material,eighteen districts,Dischaemum Schreb of gramineae plants could only grow in granitization red soil with NPK treatment,and the other sixteen districts were little or even not.The rape planted in Quaternary red soil with NPK treatment got disease especially in the centre of the district.

其次是M处理，CK最低。3、三种母质种植油菜均表现为：归还处理好于带走处理；4、据试验收产时（2009年3月25日）发现：四纪红土和花岗岩二种母质的NPK处理的油菜除靠近水泥梗边行长有部分油菜外（占小区面积20%），小区中间（占小区面积80%）的油菜生长不正常或死亡，产量极低；三种母质共18个小区，只有花岗岩母质的NPK处理长有禾本科植物马唐草，其余16个小区很少或没有；四纪红土NPK处理油菜病害严重。

Due to an abundant rainfall and frequent rainstorm, and geographical characteristics of mountain and hills, the potential erosive dynamics of soil erosion is strong. The low resistant erosion ability of ground substance, especially in granite weathering crust and purple rock and its soil are the inner causes of severe soil erosion. The utilization of natural resource of mankind was increased due to characteristics of social and economic environment of the province. The unreasonable land utilization caused vegetation destroy, which is the key factor of soil erosion.

丰沛的降雨和频繁的暴雨，以及多山地丘陵的地形特征，为土壤侵蚀提供了强大的侵蚀潜在动力；抗侵蚀性较弱的地面组成物质，特别是花岗岩和紫色岩风化壳及其土壤，是造成土壤侵蚀特别严重的内在原因；而社会经济环境特点使人类利用自然资源强度增加，出现了一系列土地利用不合理现象，导致其中植被破坏，是造成土壤侵蚀的决定性因子。

Twelve soil samples from 0~20 cm soil layer were collected from north to south in the Loess Plateau calcareous soil and analyzed for fractionation of organic and inorganic soil phosphorus by Hedley method, amended by Tiessen and Moir.

以黄土高原自北向南采集的12个0~20 cm耕层土壤为供试土样，采用Tiessen和Moir修正的Hedley土壤有机无机磷分级方法研究了黄土高原石灰性土壤中不同形态磷组分的分布特征。

The total nitrogen, hydrolyte N ,available K and soil's OM are principal components in the soil fertility factor analysis. The soil's pH value and the total phosphorus quite are small in the soil fertility contribution.

碱解氮、全氮、速效钾和有机质是土壤肥力因子分析中的主成分，酸碱度和全磷在土壤肥力的贡献中比较小。

Through different years management, the bamboo forest land soil chemistry nature shows different characteristic .Along with management years increase, soil's pH value go down ; The soil's OM, TN and the hydrolyte N all drops; The soil total P and the available K drops at first ,then go up.

4不同经营年限毛竹林地土壤化学性质变化特点：随着经营年限的增加，土壤pH值变化表现为下降趋势；土壤有机质、全氮和水解氮变化总体下降；土壤全磷和速效钾表现为先下降后上升趋势。

The results indicated that organic fertilizer at a rate of 75000 kg/ha or organic fertilizer (75000 kg/ha) with compound fertilizer at a rate of 300 kg/ha had higher effects on genetic diversity of soil microbial community under field conditions. Treatment of fertilizers as base application at level of 600 kg/ha resulted in decrease of DNA sequence richness index and diversity index of soil microbial communities, and the similarity coefficient of DNA sequence from soil microbial communities was the lowest compared with control. Organic fertilizer treatment was conducive to increasing DNA sequence diversity index and evenness index of soil microbial communities.

结果表明，在本试验条件下，基肥为75000kg/hm^2有机肥处理和75000kg/hm^2有机肥加300kg/hm^2复合肥处理最好；基肥为600kg/hm^2复合肥处理使土壤微生物群落DNA序列丰富度指数和多样性指数显著下降，与对照的DNA序列相似系数最低；有机肥处理有利于土壤微生物群落DNA序列多样性、均匀度和黄瓜产量的提高。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。