The method of treatment in situ of shallow karst road foundation with a soil covering and its good technical and economic benefits were introduced through a practical project example.
通过工程实例，详细介绍了有上覆土层的浅层岩溶路基就地整治办法，及其良好的技术经济效益。
The central Kunming Lake covering 2.2 square kilometers was entirely man made and the excavated soil was used to build Longevity Hill.
昆明湖占地220公顷，多为人工湖，其挖掘出的土壤用于建造万寿山。
Other controls include turning over the soil, pulling the weeds or covering them with mulch made of wood, garden waste or other material.
其他手段还包括翻土，拔除杂草或用地膜覆盖它们。地膜一般由木屑、花园废弃物或其他材料制成。
Other controls include turning over the soil, pulling the weeds or covering them with mulch made of wood, garden waste or other material.
其它控制手段包括翻土、拔草或用地膜覆盖杂草。地膜一般由木屑、园林废弃物或其他材料制成。
Other controls include turning over the soil, pulling the weeds or covering them with mulch made of shredded wood, garden waste or other material.
其他手段还包括翻土，拔除杂草或用地膜覆盖它们。地膜一般由木屑花园废弃物或其他材料制成。
But once the seeds are planted, she does suggest covering the soil with a little mulch to protect it during rains and dry periods.
但她建议在雨季或旱季期间，一旦播种就要用少量护根物覆盖以保护土壤。
The results showed that the film covering had obvious effect on soil water conservation at the middle stage of corn growth, but neither at the earlier, nor later stage was obvious.
结果表明，地膜覆盖在玉米生育中期保水效果明显，而在生育前期和后期保水效果不明显；
This paper took field experiment for studying the effect of covering straw on some properties of mulberry soil fertility with long-term no-tillage.
应用田间试验的方法研究在长期免耕条件下覆盖对桑园土壤某些肥力性状的影响。
In order to improve the stability of unsaturated expansive soil slope, the method of covering the slope by geo-membrane is applied.
为了提高非饱和膨胀土边坡的稳定，采用了土工膜覆盖边坡表面的方法。
The experiment was carried out to evaluate effects of covering wheat straw in apple orchard and apricot orchard on soil humus composition, microflora and soil enzyme activities.
在杏园和苹果园覆盖麦草，研究其对土壤腐殖质组成、微生物区系及土壤酶活性变化的影响。
Effects of covering with new soil on reducing the accumulation of radio-cerium in soybean were studied adopting the isotope-tracer techniques of simulated pollutants.
采用模拟污染物的同位素示踪技术研究了客土覆盖对降低大豆中放射性铈积累的效应。
Effects of rice straw covering net on soil erosion and wheat yield were studied with self-designed soil erosion boxes under simulated rainfall.
通过自制土壤冲蚀槽，并进行人工模拟降雨试验，研究了稻秆编织地表覆盖物对坡地土壤侵蚀和小麦产量的影响。
Grass covering raised the moisture of the soil nearly by 1%, which most reflected the month of precipitation, there was no difference of grass covering in the non-rainfall or less rainfall month.
覆盖能提高土壤水分含量1%左右，但主要体现在降雨月份上，在非降雨月份或少降雨月份覆盖效果不显著。
Precipitation features, landforms and the covering level of vegetations are the main cause affecting the quantity of water and soil loss.
降水特征、地形地貌和植被覆盖程度是影响水土流失量大小的主要因素。
There was no significant difference of rice grain yields between the treatments of straw mulching and plastic film covering but the cost and soil pollution in the latter should be concerned.
覆膜处理虽在产量和水分利用效率上略高于盖草处理，但差异不显著，且覆膜处理存在成本高，污染土壤等缺陷。
Results showed: the plant covering was correlated to the salt soil and ground water.
结果表明：群系最大盖度与土壤盐分、地下水理化特征相关。
Through plastic film covering and fertilization experiment on potato field, the dynamical changes of soil nutrients and soil enzyme activities were studied.
通过马铃薯覆膜集肥试验，研究了土壤养分和酶活性动态变化。
By covering tea cutting stock with various plastic film and observing the effect of different soil-temperature atmospheric-temperature air-humidity on the rooting of tea cutting.
在扦插苗圃用不同颜色的塑料薄膜进行覆盖，观察地温、气温和空气湿度的变化对扦插苗发根的影响。
On the basis of research on the adherence principle of soil and its covering materials as well as research on the measuring equipment, a new measuring method is proposed.
在对土壤与触土部件的粘附理论与测量装置研究的基础上，提出基于电子万能试验机进行纸膜与水田泥浆粘附性的测量方法。
Due to groundwater pumping the water level is lowered, the buoyancy in covering soil is decreased, the hydraulic gradient and flow velocity are increased, and the corrosion is enhanced.
抽汲地下水降低了地下水位，使上覆土层浮托力减小，水力坡度和流速增大，潜蚀作用加强。
Other controls include turning over the soil, pulling the weeds by hand or covering them with mulch made from wood, garden waste or other material.
其他控制方法包括翻土，用手拔草或者用木质地膜，花园废弃物或其他材料进行覆盖。
To amount of soil moisture consume, which was increased under different irrigation treatments, while decreased in a certain degree under covering membrane, covering grasses and pruning.
各灌水处理下的土壤耗水量均有一定程度增大，而覆膜、覆草和修剪下的土壤耗水量，则有一定程度的降低。
The results showed that (1) the survival rate of seedling increased by. 98% , 95% , 95% and 65% from the natural 40% by covering with rice straw, hog dung, ash soil and loess respectively;
结果表明：（1）岸杂一号狗牙根种苗在入冬前覆盖稻草、猪粪渣、火土灰和黄泥，种苗由自然条件下越冬率40％分别提高到98％、95％、95％和65％。
Soil polluted by crude oil, covering about 0.52% terrestrial land area of China, has become a serious environmental problem.
在我国原油污染土壤问题日益严重，污染面积约占国土面积的0.52%。
The paper studied the effects on increasing soil temperature, soil moisture content and peanut yield by the way of covering water-osmosis plastic membrane.
试验研究了花生田使用渗水地膜后的保水、增温效应，以及它的增产效果。
The physical character of soil was also improved after covering straw. The soil bulk density was reduced. Field moisture capacity and porosity percentage were increased.
覆草后土壤的物理性状也得到改善，土壤容重降低、田间持水量和孔隙度提高。
The physical character of soil was also improved after covering straw. The soil bulk density was reduced. Field moisture capacity and porosity percentage were increased.
覆草后土壤的物理性状也得到改善，土壤容重降低、田间持水量和孔隙度提高。
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