半干旱的

Also called calcrete, a hardened layer in or on a soil formed on calcareous substrata, formed in arid and semiarid regions as a result of fluctuating climatic conditions by calcite that precipitates out of solution as water evaporates at the surface.

也称为钙质结砾岩，是一种在土壤中或土壤上形成的石灰质基底的硬化层。在干旱和半干旱地区由于气候条件的变化，随着水分的蒸发，土壤溶液中的方解石在表面沉淀下来逐渐形成了这种地层。

Under the effect of both the natural and the social factors, Urumqi has a serious air pollution problem and poor environment quality. To make things much worse, it is located in a typical arid and semiarid hungriness, which add to the difficulty and requirement of the landscape greening. Since Urumqi is stepping up her way to National Garden City at present, the research of her urban greenbelt landscape is of great practical significance.

乌鲁木齐市处于典型的干旱、半干旱荒漠背景下，在自然因素和社会因素的综合作用下，大气污染严重，环境质量较差，园林绿化难度较大、要求较高，且乌鲁木齐市当前正在创建国家园林城市，对其城市绿地景观的研究具有积极重要的现实意义。

Due to the inclemency of climate and soil conditions and the intense disturbance of human beings,the soil resources heterogeneity in arid and semi arid grassland ecosystems worldwide was gradually increased during the last century.

世界许多干旱、半干旱地区草地生态系统逐渐被灌木生态系统取代，这种取代过程的发展是由灌木冠幅下土壤中"肥岛"的形成和灌木的扩散相互作用直接造成的。

Based on the tentatively study on vaporing-drift loss of spray irrigation in Maowusu sandlot,we draw a conclusion that wind speed and the relative humidity of air are the important factors to influnce loss of spray irrigation in there.

近年来，喷灌技术已成为解决干旱与半干旱地区缺水问题的重要节水技术措施。作为衡量喷灌工程可行性与有效性的重要指标，喷洒水利用系数也受到研究者的广泛关注。

The phenophase, growth speed, structure of tussock, bloom habits, yield of new russian wildrye strain were studied, The results showed that the new strain has good traits of strong cold and drought-resistance, turning-green early, fast development and long vegetative growing period, more tillers, developed rootsystem, high yield and bloom trimly. It is suitable to being planted in arid and semi-arid region.

对新麦草新品系及对照山丹新麦草的物候期、生长速度、草层结构、开花习性、产量性状等生物学特性和生产性能的研究结果表明，该品系具有抗寒、耐旱性强、返青早、生长发育快、青绿持续期长、分蘖多、须根系发达、开花整齐和产量高等优良特点，适宜于干旱半干旱地区栽培，具有很好的推广种植前景。

a studies of the drought-resistant identification on nine types(18 maize varieties) in condition of simulated drought stress were tested though 3 agronomical indexes such as relative germination frequency, root dry weight, leaf water content, the subordinate fuzzy function was used to evaluate compressively the drought resistance of the eighteen maize varieties.

玉米是我国三大粮食品种之一，每年种植面积达到2500万公顷左右，主要分布在东北、华北及西南、西北等一部分地区，而我国干旱、半干旱地区（包括华北、西北、内蒙古和青藏高原等地区）主要分布在这一带，约占全国土地面积的二人之一[1]。因此，对玉米抗旱性研究是提高其产量的一个行之有效的途径。

The yield of wheat is greatly affected by the environmental stresses like low temperature, drought salinity salt and alkaline. More than half of the fields in China is droughty, half-droughty or salty and alkaline.

在我国干旱、半干旱地区和盐碱地区约占国土面积的一半以上，仅次于病虫害造成的损失，严重制约着这些地区的粮食生产。

Microbiotic crust is one of the important components in arid and semi-arid area, which attracts more and more attentions for its hydrological process recently.

：微生物结皮是干旱半干旱地区生态系统的重要组成部分，其生态水文过程受到了广泛关注，但对微生物结皮在地表蒸发过程中的作用存在较大的争议。

New sea 21 are varieties which can save water effeciently,so they have advantage in arid and semi-arid region.

新海21是节水型品种，能够较充分的利用有限的灌溉水，在干旱半干旱地区具有强大的优势。

Yellow river valley is typical arid and semiarid region in China.

黄河流域是我国典型的干旱和半干旱地区，流域缺水、支流水质污染和污水灌溉面积的增加对环境、农业生产和农产品安全造成了潜在的威胁。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了