本研究采用连续提取法和原子吸收法对成都市某郊区基本农田的35份土壤样品中各形态镉进行了提取和测定。
A sequential extraction technique and atomic absorption spectrometry were used in the study to extract and determine the cadmium forms in 35 farmland soil samples in the suburb of Chengdu.
采用化学连续浸提法对冶炼厂污染土壤中铜的赋存形态进行了比较分析,并且计算了铜的生物有效性系数。
The form of copper occurrence in contaminated soil in a smeltery site was discussed comparatively by continuous chemical digestion, with the coefficient of biologic effectiveness to copper calculated.
对河北省中南部棉区36个地块土壤钠形态和含量进行了测定。
The soil sodium forms and content of 36 samples were investigated in south centre area of Hebei.
采用盆栽试验方法,研究了施入过磷酸钙磷肥对土壤中外源铅的形态变化及其生物有效性的影响。
Using pot experiment, the transformations of different forms and the bioavailability of added Pb in soil blended with single superphosphate (SSP) were determined.
利用扫描电镜观察土壤动物的典型体表形态,并提取其仿生信息。
Biomimetic information in cuticles of some typical soil animals was extracted by observing under SEM.
采用盆栽试验,研究土壤水分与水稻秧苗根系形态建成的关系。
The relations between soil water content and the root system formation of rice seedlings were studied with pot experiments.
探讨根外喷硼与土壤施硼对植株硼形态含量及叶片光合作用的影响。
Effects of applied boron (soil application of boron, spraying boron on the plant) on the boron forms and leaf photosynthesis of papaya plants were investigated.
在地形等因子不变条件下,四个土壤指标的协同作用决定了区域水蚀过程、形态和危害;
The coordinate effects of four soil indexes strictly determine the regional differences in water erosion process, shapes and harms.
不同处理土壤微形态差异明显。
Soil micromorphology has significant difference in different treatment.
黄土残塬区的沟道由于地质地貌基础及土壤侵蚀强度的不同而具有不同的形态特征。
Gullies located in the remained loess area have different formation features due to the different foundations of geology and geomorphology and intensity of soil erosion.
本文拟就土壤中硒的含量、形态、有效性影响因素、硒的保健作用和调节措施等方面作一综述。
The soil selenium content, form, availability, healthy effects and adjust measures were reviewed in this paper.
目前,荒漠化程度评价的主要因子为植被因子、土壤因子和地表形态因子。
At present, the mostly factors for the evaluate the degree of desertification are the rate of soil moisture, vegetation factor.
本文对黄河、长江、珠江三角洲土壤中5种微量元素的形态分配及其地理分布趋势进行了研究。
The partitioning and regional distribution of 5 trace elements in soils from Yellow River, Yangtze River and Pearl River Deltas were studied.
本研究通过培养试验探讨了添加黑麦秸秆对土壤中无机氮的形态转化和N_2O、CO_2释放的影响。
The research was carried out to understand effect of application of rye straw on transformation of inorganic nitrogen in soil, and on N2O and CO2 emissions.
土壤是一形态和演化过程都极其复杂的综合体。
Soil is a synthesis with extremely complex pattern and evolution process.
通过野外调查和实验分析,对芜湖市工业区土壤重金属的形态、含量和分布进行了研究。
Based on the field investigation and laboratory experiment, this paper studied the fractions, contents and distribution of heavy metals in soils of Wuhu industrial sites.
本文根据六种典型土壤中砷的形态和含量的测定结果,分析讨论了不同地理环境条件下土壤中砷的含量和形态特征。
In this paper the charac-tristscs of content and forms of soil Arsenic in different geo-environmental conditions are discussed based on the analysis of six typical soil samples.
监测地表水和土壤水中的铝形态及浓度变化是问题的关键。
The key of the problem is to monitor species and concentration of Aluminum in surface and soil water.
最后,还介绍了土壤汞形态的分析方法以及土壤挥发性汞释放通量的测量方法。
At last, the analysis methods of soil mercury forms and emission flux of vapor phase of mercury from soil are discussed.
以潮土为供试土壤进行土培试验,研究了农用稀土对同时施加的尿素在土壤中形态转化过程影响。
By incubation experiment with luvisol, the influences of rare earths on the trans formations of simultaneously applied urea in the soil were studied.
现有的材料说明,土壤年龄对土壤的氮素形态分布没有明显的影响。
SummaryResults available showed that soil age did no significant effect on the distribution of the forms of soil organic nitrogen.
选择赣南富稀土矿区典型环境地球化学景观,研究了稀土元素在土壤中的含量、分布及赋存形态特征。
The content distribution and speciation of rare earth elements (REE) of soils in a typical geochemical landscape (REE mine area) in southern Jiangxi Province were studied.
几种非腐解有机物料施于苏打草甸水稻土后,对土壤中不同结合形态的腐殖质的动态变化进行了研究。
The combined states of soil humic substances were studied after undecomposed organic materials were applied into sodic meadow paddy soil.
在此基础上建立了基于土壤孔隙形态学特征的随机网络模型,在孔隙尺度模拟了土壤中的水分运动过程,并预测了近饱和土壤水分特征曲线。
A spatially-random network model by using measured pore morphology was then set up to simulate the pore scale flow processes, and to predict the soil water retention curve near saturation.
溪流相邻高地通过地下径流向溪流中N素的输入,主要是以硝态氮的形态通过土壤水的输入;
N in the main form of nitrate through the subsurface runoff was put into the stream, the vegetation-covered riparian had high on the nutrient in the soil water.
森林土壤类型极其复杂,不同土壤中各种有效养分形态和数量差异很大。
The forest soil's type was extremely complex, the shape and quantity of available nutrient had a distinct difference in different soil.
非根际土壤酸度与非根际土壤无机磷形态的相关性不明显。
There was not significant correlation between soil acidity and various forms of inorganic phosphorus in non-rhizosphere soil, respectively.
在不施钾肥的条件下随着水稻种植季节的延续各种形态土壤钾的含量均呈现明显的下降趋势,但下降的幅度和速度各异。
There was a very rapid decline in paddy soil phosphorus and potassium with no fertilization contrast to the decline under fertilization conditions.
土壤中各种形态氮的含量菜地上壤高于林地土壤。
The content of different form nitrogen in vegetable field is higher than wood soil.
锌肥施入土壤后各形态锌的含量都有较大幅度的增加,施入土壤中的锌有很大一部分转化为矿物态锌,只有一小部分进入土壤溶液,或与有机质、碳酸盐及氧化锰相结合。
The result also suggested that most zinc added to soils has entered into soil minerals and little has entered into soil solutions or combined with soil organic matter, carbonate or manganese oxides.
应用推荐