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- Arid regions cober arid and semiarid areas. 旱区包括干旱区和半干旱区。
- Out of the Qingtong Gorge, the riverway runs around the northwestern boundary of the Ordos Plateau, most of which is arid and semiarid area with no branch joining in. 出青铜峡后,河道沿鄂尔多斯高原西北边界绕流,沿途所经,大部分为干旱和半干旱地区,几无支流加入。
- Cold regions cover the areas with the average temperature of the coldest month below 0'C.Arid regions cober arid and semiarid areas. 寒区是指冬季最冷月平均温度为零度以下地区;旱区包括干旱区和半干旱区。
- Cold regions cover the areas with the average temperature of the coldest month below 0’C.Arid regions cober arid and semiarid areas. 寒区是指冬季最冷月平均温度为零度以下地区;旱区包括干旱区和半干旱区。
- 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,其岩土工程性质与风沙环境紧密相关。
- High efficient utilization of rainwater resource is very important for the economic development in arid and semiarid areas where surface water and ground water are shortage. 合理高效地利用雨水资源对西北干旱半干旱地区尤其是地表水缺乏地下水不易利用地区的经济发展具有十分重要的意义。
- The cyanide transport in the soil section is similar to freely soluble salts.In arid and semiarid areas, cyanide can be highly enriched in the salt crust. 氰化物在干旱半干旱气候条件下的行为同于易溶盐,可在地表盐渍中高度富集。
- 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。
- Soil Erosion Assessment for Arid and Semiarid Areas 干旱半干旱区土壤风蚀评价方法
- Abstract North China is situated in arid and semiarid regions. 摘 要 华北地区位于干旱和半干旱地区。
- Keywords arid and semiarid area;agricultural ecology;geological environment;systematic engineering; 干旱半干旱区;农业生态;地质环境;系统工程;
- arid and semiarid area 干旱半干旱区
- A PRELIMINARY STUDY ON THE CORRELATION BETWEEN CROP YIELD AND METEOROLOGICAL FACTORS IN THE MIDDLE ARID AND SEMIARID AREAS OF GANSU PROVINCE 甘肃中部干旱、半干旱地区作物产量与气象因子相关性研究初探
- 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。
- Arid and extremely arid land are deserts, and semiarid grasslands generally are referred to as steppes. 干旱和极度干旱的土地是沙漠,半干旱草原和通常被称为草原。
- About 200 species: arid and semiarid regions of the W hemisphere; two species (introduced) in China. 大约200种:西半球的干旱和半旱的地区;中国有2种(引入栽培)。
- 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 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。
- 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。
- The most regions in Northwest belong to continental arid and semiarid climate.The climate diversity in Northwest is greater. 西北地区大部分属于大陆性干旱、半干旱气候,气候差异较大,国西北地区节能型日光温室蔬菜生产进行分区,分为4个气候区。