Afforestation Technology for Grassland Shelterbelt in Semiarid Sandy Area 半干旱风沙区草原防护林的营造技术研究
Effects of crop root and fertilizer on soil microbial biomass nitrogen in semiarid farmland ecological system; 采用室内和田间培养试验,研究了有机物料矿化过程中土壤微生物体氮的变化。
The effect of nitrogenous fertilizer on root system of naked oat in semiarid region was studied with root bags in field. 通过田间根袋实验研究了氮肥对旱地莜麦根系生长的影响。
Study on High Effective Rainwater Use Models of Catchment Agriculture in Semiarid Area 半干旱区集水农业高效用水模式研究
Study on sunflower water production function of semiarid area in the western of Heilongjiang 黑龙江省西部半干旱区向日葵水分生产函数试验研究
The Relationship between Competitive Ability and Yield of Spring Wheat Varieties in Semiarid Area 半干旱地区春小麦品种竞争能力与产量关系研究
The region is semiarid to arid in overall climate. 这个地区总体上是半干旱至干旱气候。
Small shy brightly-ringed terrestrial snake of arid or semiarid areas of western North America. 北美洲西部干旱或半干旱地区不愿近人的身上有鲜艳色环的陆栖小蛇。
Effect of Atrazine on Chernozem Soil Microbial Activity in Semiarid Region of Northeast China 阿特拉津对我国东北半干旱区黑钙土微生物活性影响研究
Discussion on Drought Resistance of Sorghum and Its Status in Agriculture in Arid and Semiarid Regions 论高粱的抗旱性及在旱区农业中的地位
LUCC and Emergy Evaluation on Sustainability of Agricultural System in Arid and Semiarid Area of Northwest China 西北干旱区LUCC与农业系统可持续性能值评价研究
The measurement of water resources carrying capacity was an important guidance to the sustainable development of arid and semiarid area. 水资源承载力分析计算和评价是干旱半干旱区寻求区域可持续发展道路的重要依据。
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。
Terpenoids are more prevalent in some arid or semiarid climates. 萜类在某些干旱或半干旱气候条件下较为普遍。
Of arid and semiarid open country. 产于干旱和半干旱地区的空旷乡间。
In the arid and semiarid areas of Northwest and North China, the area of shrubs accounts for36. 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。
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。
Preliminary Studies of Dust Emission Model from Farmland in Northwest Semiarid Areas 西北半干旱区城郊农田地表粉尘释放模型的初步研究
Sesame and Sunflower in Dryland Species of High-yielding Cultivation Technology Between Research of arid and semiarid open country. 旱地胡麻与葵花间种高产栽培技术研究产于干旱和半干旱地区的空旷乡间。
The semiarid lands bordering the deserts exist in a delicate ecological balance and are limited in their potential to adjust to increased environmental pressures. 与沙漠接壤的半干旱地区存在于脆弱的生态平衡中,在其适应增加的环境压力中潜力有限。
By using soil bores and closed chamber methods, field experiments were carried out in the semiarid area of dry land to study the effects of irrigation and rainfall on the N2O loses. 利用土壤探头法和密闭气室法相结合,就黄土高原旱地土壤玉米生长期灌溉和降水对N2O气态损失的影响进行了研究;
The research of the relations between the yield on irrigation and fertilization on arid and semi-arid areas of turf of arid and semiarid open country. 干旱半干旱区草地灌水与施肥增产关系的研究产于干旱和半干旱地区的空旷乡间。
For hundreds of years the Crow have lived in these rolling, semiarid lands of the American West. 几百年来,克罗人一直居住在美国西部这片绵延起伏的半干旱的土地上。
Study on Soil Moisture of Artificial Vegetation in Semiarid Loss Hilly and Gully of Gansu Province 甘肃半干旱黄土丘陵沟壑区人工植被土壤水分研究
Crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions. 干旱或半干旱地区的底土因碳酸钙作用而形成的硬层。
Farmland Drought Defence and Drought Resistance Measure in Semiarid Loess Plateau Located in an arid and semi-arid area, Ningxia is one of the weakest ecological systems in China. 黄土高原半干旱区农田干旱防御与抗旱措施宁夏地处干旱半干旱地带,是全国生态系统最脆弱的省区之一。
Soil Physical-chemistry Characteristic and Correlation Analysis of Different Vegetation Restoration Modes in Semiarid Hilly and Gully Region 半干旱黄土丘陵区不同植被恢复方式下土壤理化特性及相关分析
Soil Structural Properties of Enclosed Steppe in the Semiarid Area 半干旱典型草原区封育草地土壤结构特征研究
Most heteromorphic plants studied are annuals, often species in Asteraceae and Chenopodiaceae faced with stochastic environments such as arid, semiarid, desert and saline soil. 异型性种子植物主要分布于干旱半干旱区、荒漠和盐渍土地区等干扰强烈的环境,在菊科和藜科中最为常见,主要出现在一年生植物中。
Study on maize optimal cultivation measures under bed-irrigating sowing condition in semiarid area 半干旱区坐水播种条件下玉米高产栽培措施研究