arctic soil是什么意思

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用法例句

This change in soil properties,which is called "soil polarization" by the authors of this paper,occurs because tree species each have unique biological and ecological characteristics(e.

充分认识和了解土壤极化的方向和程度对维持森林可持续发展和防止土壤退化具有非常重要的意义。

Synergistic nitrification-inhibiting effect of elemental sulfur and dicyandiamide in a typical vegetable soil;

元素硫和双氰胺对菜地土壤铵态氮硝化抑制协同效应研究

The heavy metals pollution in vegetable soil around the transportation skeleton line in molybdenum ore areas was investigated.

选择采集钼矿区交通运输干线周边菜地土壤样本180个,采用HNO3-HF-HClO4混酸对土壤样品进行处理,运用等离子体发射光谱仪(ICP-OES)测定土壤样品中Mo、Pb、As、Hg、Cr、Cd、Zn、Cu、Ni的含量,全面系统地评价土壤重金属污染现状,并进行元素形态分析,同时对矿区周边水域中重金属元素的含量也进行了分析测定。

This paper reported the content of total phosphorus (P), organic P, available P, and inorganic phosphorus (Pi) fractions in vegetable soils.

以在潮土上形成的菜地土壤为材料,研究了菜地土壤全磷、有机磷、有效磷、无机磷组分含量变化及其土体分布特征,结果表明:潮菜地土壤磷素积累量大、积累速度快,10年左右的菜地土耕层全磷含量增加1000mg/kg左右,积累速度约100mg/(kg·a)。

Effects of soil textures and emitter material on the soil water movement and efficiency of negatively pressurized irrigation system;

土壤质地和灌水器材料对负压灌溉出水流量及土壤水运移的影响

The influence of soil texture bulk density and water applied methods on point source infiltration;

土壤质地、密度及供水方式对点源入渗特性的影响

Relation of soil clay and soil texture in Qinchuan Basin in Gansu;

秦川盆地土壤粘土矿物特征与土壤质地的关系

Phosphorus sorption/desorption characteristics of wetland soils in Sanjiang Plain;

三江平原湿地土壤磷的吸附与解吸研究

Effects of temperature and soil moisture on wetland soil organic carbon mineralization;

温度、水分对湿地土壤有机碳矿化的影响

Phosphorus release from wetland soil in the Nanjishan nature reserve of Poyang Lake

鄱阳湖南矶山湿地土壤磷释放研究

Changing trend of organic matter and nutrient content in cultivated land of the Ningxia irrigation area of yellow river;

宁夏引黄灌区耕地土壤有机质及养分质量分数变化趋势

It has been 20 years since the Second Soil Census,in order to know the dynamic change of soil phosphorus,the data of soil phosphorus in cultivated land in Ankang from 1995 to 2003 is analyzed and the result is compared with the Second Soil Census.

第二次土壤普查迄今已20年,为了摸清土壤磷素的变化动态,对安康市1995～2003年耕地土壤有效磷化验资料进行了统计分析,并与第二次土壤普查结果进行了比较研究,结果表明,土壤有效磷呈上升趋势,严重缺磷土壤减少,但中高山地区土壤缺磷依然严重。

Mercury pollution in soil-vegetable system of vegetable districts in Guilin

桂林市菜地土壤-蔬菜系统汞污染研究

Processes of Studies of Heavy Metal Pollution of Soil and Vegetables on China’s Vegetable Field

中国菜地土壤和蔬菜重金属污染研究进展

Soil Fauna Diversity of the Rape(Brassica napus) Land in the Suburb of Chengdu City

成都市郊油菜地土壤动物群落多样性

Effect of DMPP on Inorganic Nitrogen Runoff Loss from Vegetable Soil

DMPP对菜地土壤氮素径流损失的影响

Investigation on the Soil Fertility of Vegetables Field in Qingyuan County

清苑县蔬菜地土壤肥力状况调查分析

Area Variation of Soil Characteristics in Vegetable Plots of Yellow Soil and Its Impact on the Quality of the Vegetables in Guiyang;

贵阳市黄壤菜地土壤特性区域变异及其对蔬菜品质的影响

The Study of Antibiotics in the Soil of Typical Vegetable Fields in Pearl River Delta;

珠三角地区典型菜地土壤抗生素污染特征研究

Characteristics and Assessment of Heavy Metal Pollution in Vegetable Soils in Jiangbei Area of Nanjing City

南京江北地区菜地土壤重金属污染特征及评价

Comprehensive evaluation of Cu and Hg pollution of soil in vegetable farms in suburb of Fuzhou

福州市郊蔬菜地土壤汞、铜污染综合评价

Soil Nitric Oxide Emissions from Forests and Vegetable Fields in the Pearl River Delta;

珠江三角洲森林和蔬菜地土壤一氧化氮排放

Studies on Phosphorus Status and the Risk of Phosphorus Leaching in Vegetable Soils;

蔬菜地土壤磷素状况及其淋失风险研究

Effects of Land-use Systems Change from Paddy Field to Vegetable Land on Soil Properties and Its Environmental Impact;

水田改为蔬菜地土壤特性的变化及其环境效应

Studies on the status and the availability of phosphorus in vegetable soil of Hebei province;

河北省菜地土壤磷素状况及有效性研究

Study on Spatio-temporal Variability of Soil Available Nutrients in Typical Vegetable Field of South China;

南方典型菜地土壤速效养分时空变异特征研究

Studies on Nitrogen Transformation and Leaching of Vegetable Soil in Wuhan Suburb, China

武汉城郊菜地土壤氮素的转化与淋失研究

Response of Vegetable Yield and Environment to Phosphorus Application in Two Vegetable Garden Soils in Wuhan

武汉市两种菜地土壤施磷的增产与环境效应

Study on Bioavailability of Residual Nitrate Nitrogen in Vagetable Soil

菜地土壤残留硝态氮的生物有效性研究

Conductive Capability and Its Influential Factors for Vegetable Soil with Different Planting Years in Tianjin City

不同种植年限蔬菜地土壤导水性能及影响因素