英汉例句

• dry farming; dryland farming: a system of producing crops in arid and semiarid regions without the use of irrigation.

  旱地耕作法：指一种在干旱或半干旱土地上不使用灌溉方法生产作物的耕作制度。

• the top soil layer is the rarest natural resource, and the soil-root layer is the most precious ecosystem on arid and semiarid sandy grasslands.

  干旱半干旱气候区沙质草原的土层是稀缺的自然资源，地表土壤-植物根系层是珍贵的生态系统。

• the vegetation and soils in most of the arid and semiarid zones have been degraded, usually by overgrazing and the removal of plant cover by fire or the axe.

  大多数干燥和半干燥地带的植被和土壤严重退化，其原因通常是过度放牧及滥砍滥伐和火灾。

• selection and utilization of the optimum surveying methods is one of the important jobs in the accurate study of evapotranspiration of farmlands in the arid and semiarid areas.

  选用适宜的测量方法，是準确地进行干旱半干旱地区农田蒸腾蒸发研究的一件十分重要的工作。

• north china is situated in arid and semiarid regions.

  华北地区位于干旱和半干旱地区。

• arid and semiarid areas are main areas of food production in our country. water shortage and nutrient deficiency are two key factors that restricted crop production in these areas.

  干旱和半干旱地区是我国重要的农业生产区，水分不足和养分缺乏是制约其生产发展的两个关键因素。

• this paper summarized hydrological characters, distribution of precipitation and runoff in arid and semiarid regions in the northwest of china on the basis of the previous researches.

  本文在前人研究基础上，总结了中国西北部干旱半干旱地区的水文特性，降水及径流的时空分布规律。

• the salinity of lake water is a sensitive monitor of climate in arid and semiarid region.

  在干旱半干旱地区，封闭湖泊的湖水盐度对气候变化反应敏感。

• drought can happen at any time on any climate zone. arid and semiarid regions are where drought occurs the most often.

  干旱可以发生在任何气候带上，但干旱、半干旱地区是全球干旱灾害发生最频繁的地区。

• in the arid and semiarid areas of northwest and north china, the area of shrubs accounts for 36.

  在干旱、半干旱的华北地区和西北地区，退耕还林工程中营造的灌木林占36。

• soil microbiotic crust is developed broadly and has an ecological significance in arid and semiarid regions.

  土壤微生物结皮广泛存在于干旱半干旱地区 ，且具有重要的生态学意义。

• the dynamic relationship between the biomass of switchgrass and the soil water content in arid and semiarid area was investigated in this paper.

  通过在黄土高原半干旱地区种植柳枝稷，构建生物量与土壤水分的动力学关系模型。

• as a kind of special soil, aeolian sandy soil mainly lies in arid and semiarid areas where sand drift activity is very strong.

  沙土是存在于干旱、半干旱地区的一种特殊性土，其巖土工程性质与风沙环境紧密相关。

• shortage of water resources restricted agricultural production in arid and semiarid region.

  水资源紧缺限制了干旱半干旱地区农业生产。

• campestris reservoirs plays an vital role in terms of people's production and living in arid and semiarid oasis, especially at xinjiang where campestris reservoir take over 90% in total reservoirs.

  平原水库对于干旱半干旱区绿洲的生产、生活都起到了很大的作用，特别是在新疆，超过90%的水库为平原水库。

• soil erosion by wind is a major cause of farmland degradation in arid and semiarid area of north china.

  土壤风蚀是中国北方干旱半干旱地区农田土地退化的重要原因。

• the role and function of microbiotic crust in ecological restoration of arid and semiarid regions of china were discussed.

  探讨了土壤微生物结皮在中国干旱沙漠地区生态恢复中的地位及作用。

• salinity is one of the serious environmental problem that cause osmotic stress and reduction in plant growth and crop productivity in irrigated areas of arid and semiarid regions.

  盐度是严重的环境问题之一，引起渗透胁迫，及干旱半干旱灌区的植物生长和作物生产率下降。

• extensive areas of the arid and semiarid regions have soils containing concentrations of soluble salts sufficient to adversely affect plant growth.

  干旱与半干旱区域的广大面积含有对农作物足以造成不利关系的高浓度溶性盐。

• arid regions cober arid and semiarid areas.

  旱区包括干旱区和半干旱区。

• the micro-meteorological conditions are advantageous for forming soil condensate in arid and semiarid regions in north china.

  中国北方干旱半干旱地区的气象条件有利于土壤凝结水的形成。

• soil microbiotic crusts are widespread in arid and semiarid regions, they are one of the major components of desert ecosystems, and their importance has been demonstrated by numerous researches.

  生物土壤结皮广泛分布在干旱半干旱地区与寒区荒漠，是荒漠生态系统的主要组成和景观特征之一，其重要性已被大量的研究报道所证实。

• dry farming; dryland farming a system of producing crops in arid and semiarid regions without the use of irrigation. frequently alternate years of fallow and cropping are practiced.

  旱地耕作法指一种在干旱或半干旱土地上不使用灌溉方法生产作物的耕作制度。常常采用一年休耕、一年种植的方法。

• aims in arid and semiarid regions, precipitation is the most important water source for plants.

  自然降水是干旱、半干旱地区荒漠植物重要的水分来源。

• lack of water resource has become a critical problem faced by china northwest regions and the other arid and semiarid regions in the world.

  水资源短缺已成为我国西北地区乃至世界上其他干旱半干旱地区需要面对的一个重大问题。

• wind erosion is one of nature disaster around globe . this phenomenon is widely distributed in arid and semiarid area.

  风蚀是全球性的自然灾害之一，此现象广泛分布于干旱半干旱地区。

• the social and economic sustainable development in the arid and semiarid area in china has been restricted by sandy desertification heavily.

  沙漠化是制约我国干旱、半干旱地区社会经济可持续发展的重要因素。

• the afforestation in arid and semiarid is restricted by water condition.

  干旱区和半干旱区的造林主要受水分条件的限制。

• in arid and semiarid area, cyanide can be highly enriched in the salt shell which content degrading 4 years even higher than the fresh tailing slurry.

  在干旱、半干旱气候条件下，剖面中的氰化物可在土壤表面盐壳中高度富集，即使在4年后其浓度仍可高于新鲜尾矿浆中氰化物的浓度。