查询词典 erodible

Phase 1 started with field pea followed by spring wheat whereas phase 2 started with spring wheat followed by field pea.The objectives of this thesis are:1 to quantitatively analyze effects of soil chemical,physical and biological properties on soil quality and productivity under different tillage systems and the driving factors for the changes of soil quality under tillage in a long-term,2 to select the best soil quality assessment indicators,and 3 to establish soil quality assessment models that are suitable for the erodible environment of semi-arid region on the Loess Plateau.

通过分析3个轮作周期不同耕作方式下土壤理化性质、生物性质和生产力对土壤质量的影响，阐明长期耕作过程中土壤质量的演变特征及其驱动因子，筛选出适宜于黄土高原半干旱区侵蚀环境下土壤质量评价的代表性指标；并综合前人的研究，结合区域特点，建立适宜于黄土高原半干旱区侵蚀环境的土壤质量评价模型。

Though wood is a kinds of excellent building material , it also has its disadvantages , such as flammable and erodible .

虽然木材是一种优良的建筑材料，但也有其天然的缺陷，即易燃性和易腐朽性。

The 0 6 factor should be decreased if the soil is known to be more erodible than the average .

如果已经知道沟渠土壤比一般土壤更容易遭受侵蚀，那么，式中0.6这个系数应该减小。

The Grand Canyon has an excellent reputation for his erodible physiognomy regarded as the most grand canyon in the world.

科罗拉多大峡谷被誉为世界上最大最壮观的侵蚀地貌，不虚此名。

It is an administering project of water erodible ditch combined with biological measure and engineering measure .

压柳谷坊应用范围较广，可就地取材，成本低，效益高，维修方便，筑造技术简单群众很容易掌握，是一项生物措施与工程措施相结合的水蚀沟治理工程。

And soil structure was destroyed and formed erodible particles with size 0.154 to 0.18 mm in the soil surface under the trampling of livestock.

在牲畜的践踏作用下，表层土壤破碎粒子直径主要位于0.154~0.18 mm之间，在风力作用下土壤表面发生风蚀。

This investigation provided a new theoretical tool for studying the diffusional release of drug from an erodible polymeric matrix and designing the controlled released drug .

这对研究药物从高聚物基质内的释放问题以及控释制剂的设计具有重要的意义。

Erodible soil fractions are usually dislodged from projections and trapped in depression.

可冲蚀土壤部分经常从凸出物剥蚀并降落于洼地。

Erodible soil fracts are usually dislodged from projections and trapped in depression .

可冲蚀土壤部分经常从凸出物剥蚀并降落于洼地。

The soil erodibilities are compared and appraised for the majority of the soil types in Ningxia. The method published by D. W. Fryrear et al is adopted to calculate erodible fractions for the soils in Ningxia. The erodibilities of main soil types are compared and analyzed. Spatial distribution of soil erodibilities in the region can be perceived on the Map of Ningxia Soil Erodibility. The map is based on the digitized map of soil types of the all region by means of the geographical information system of Region Manager. Evaluation results show that erodible soils occupy a large portion of the total area of the region.(3) The third task is evaluation of effects of human activities for farming on soil erodibility. Tillage and cultivation can alter soil properties. The paper, based on the discussion on the characteristics of farmland suffering wind erosion in the region, analyzes the contents and intensities of farming disturbing surface soil. Emphasis is paid on the effect of farming on erodibilities of each type of soil.

W Fryrear等人的计算土壤可蚀部分含量的方程，此方程的自变量包括土壤有机质、碳酸钙、沙粒含量、沙粘比，计算了宁夏主要土壤类型表层的可蚀含量，进而比较它们的可蚀性，并以宁夏土壤分布图为底图用地理信息系统建立了宁夏土壤风蚀数据库，完成了宁夏土壤可蚀性图，评价结果显示宁夏地区主要的土壤类型较容易遭受风蚀；（3）农业经营对土壤风蚀的影响及其评价，在分析宁夏农业土壤遭受风蚀特征的基础上，首先讨论了农业活动对土壤理化性质的干扰，评价主要耕作栽培措施对土壤风蚀的影响，选取粗糙度、表面结皮、可蚀颗粒含量、留茬和有效时间为指标，用打分方法作了评价。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。