查询词典 arid area

Study on water resources in arid area is one of the focuses in water resource researches.

干旱区的水问题是水资源研究的热点之一。

The effects of different sowing dates for two varieties of field pea have been examined through field site observations in an arid area of the Loess Plateau over two years. The experiment focused on two varieties of field pea, Green pea, which has high yield, and Yannong 2, which has low yield.

通过定位试验，探讨了黄土高原旱地不同播种期对豌豆产量的影响，供试材料为绿豌豆和燕农2号。

Field experiments were conducted in arid area to study quality characters of foxtail millet under water-controlled irrigation among eight cultivars.

选用8个不同谷子品种作材料，研究了旱地自然条件下控水补灌对谷子品质的影响。结果表明，控水补灌对谷子营养品质、食味品质和加工品质都有较大影响。

High effective rainwater harvesting to development high effective saving water agriculture and enhance availability factor of the irrigational water is a important measure that resolves the shortage of water resource, especially in the semi-arid area of china.

在我国半干旱山区，高效利用雨水资源发展高效节水农业，提高灌溉水的利用率和农田水的利用效率，是解决水资源短缺问题的重要措施。

Through analyses of the field tracer migration test results of tritium in unsaturated loess located in semi arid area, it is found that the longitudinal concentration distributions of 3H are symmetry at higher relative concentration and non symmetry at lower relative concentration.

通过氚在黄土包气带现场示踪试验结果的分析，发现3H纵向分布在相对浓度较大时是对称的，而相对浓度较小时则不对称。

The results show that the control weather system in arid area of NW China is mainly westerly system.

分析表明，控制中国西北干旱区的天气系统主要为西风系统。

This paper systematically summarized the methed for estimating groundwater resources in piedmont of arid area.

并系统总结了内陆干旱区山前带地下水资源的计算评价方法。

Arid area ; Foliage projective cover ; Plant community ; Simulation model

干旱区；叶片投影盖度；植物群落；模型

In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0～15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.

本文对以克拉玛依为例，对干旱区绿洲土壤质量的时间空间变化进行研究，在有关土壤质量的研究理论指导下，通过田间调查取样和室内分析相结合的方法，对新疆克拉玛依市农业开发区的不同土地利用方式及同一土地利用方式下不同利用年限土样土壤理化性质进行测定，从而对新垦绿洲不同土地利用类型土壤质量进行综合评价，结果如下：四种土地利用方式中，农地、乔木林地表层(0-15cm)土壤容重较大；各土层人工柽柳芦苇地的土壤有机质含量均较大；柽柳芦苇地的有机质在矿化过程中所释放出有效氮，导致柽柳芦苇地的C/N比例较高；受到农业耕作使用大量氮肥的影响，农地各土层全氮含量变异较明显；乔木、灌木及芦苇的枯枝落叶主要集中在5cm范围之内，导致几种土地利用方式类型下该层土壤速效氮最大；天然灌木林地的土壤总盐在各层均较大，其次是农地，说明天然灌木林地的高耐盐能力，以及该区农业生产用地的土壤盐碱化程度较重。

The inland arid area of China is very broad,such as Hexi corridor of Gansu Province, Ta Limu Basin and Zhun Ge'er Basin of Xinjiang Uygur Autonomous Region, Chai Damu Basin of Qinhai Province that are all the type of Gobi and generated by the dry climate condition. There are broad plain area and abundance heat resources of sun in these basins.

我国内陆干旱区面积广阔，均为干旱气候条件下所形成的典型戈壁沙漠地区，主要包括甘肃河西走廊、新疆准噶尔盆地、塔里木盆地及青海柴达木盆地等内陆盆地。

Do not gum up the work by telling mother what we are going to do .

别告诉母亲我们要干的事，那会把事情搞糟的。

In recent years, application of the partial prestressed concrete beam s is developed.

近年来，随着部分预应力砼梁应用的推广，发现我国规范所采用的名义拉应力法的计算结果不稳定。