原始土壤

本文根据原始土壤与成土母岩间化学组成的相互关系，研究了极地条件下的风化成土过程。

This paper discusses the weathering soil-forming process under the conditions of King George Island region by means of correlation between chemical compositions of both primitive soil and parent rocks .

根据实际采样诊断土壤类型并在GIS界面修正原始土壤分布图，完善了当地的土壤图，并且在制图过程中将研究区行政区划图根据最新情况做了修订。

The original soil map was amended and perfected in GIS interface based on actual soil type diagnosis . The administrative map was revised according to the latest version and related information .

经3个月盆栽实验后，与原始土壤相比，两种CO2浓度处理土壤全N、NO3&N和NH4+-N都有所降低，而土壤微生物氮则显著增加，这可能与植物生长有关。

After three months experiment , soil total N , NO_3 ~ & N and NH_4 ~ + - N under both ambient and elevated CO_2 conditions decreased , while soil microbial biomass N increased significantly .

结果表明，模拟酸雨浸泡初期，土壤活性铝的释出量随浸泡次数的增加而增加，原始土壤pH值愈低，活性铝释出愈多；

The results showed that the release of active Al increased with increasing volume of simulated acid rain solutions at the beginning of the experiment , and more active Al was released from the soil with a lower pH value .

南极乔治王岛原始土壤的若干性质

Some basic properties of soils in King George island , antarctica

基质包括试验地原始土壤和混合过筛的沙质土。

The original soil and substrate including tested sift the sandy soil .

主要试验结果如下：1.与原始土壤相比，定位施用有机肥和无机肥后，明显提高土壤中有机质含量，尤以施用秸秆和苕子的处理最为明显。

Following are the main results : 1 . After the organic manure and chemical fertilizer application , the soil organic matter content showed a remarkable increase , especially straw and common vetch treatments had the most obvious effects .

原始森林土壤NH4~+/NO3~-生境特征与某些针叶树种的适应性

Soil NH_4 ~ + / NO_3 ~ - nitrogen characteristics in primary forests and the adaptability of some coniferous species

δ13C在土壤剖面中随深度变化，能够反映作物残体输入和土壤累积特征，有助于鉴定原始埋藏土壤表层。

The change in δ ~ ( 13 ) C with depth in soil profile reflected input of plant residue and accumulation of eroded soil , which helps to identify buried soil surfaces .

从湖北神农架原始森林土壤中分离的高毒力苏云金芽孢杆菌

Bacillus thuringiensis Isolates from Soil in Primitive Forest of Sheng Nong Jia

利用光谱分析技术，进行了农田原始状态土壤样品的可见光光谱与土壤参数之间的相关、回归分析。

Using spectroscopic techniques , correlation analysis and regression were conducted between soil parameters and visible reflectance spectra of raw soil samples .

长白山原始森林土壤养分及其对土柱置换试验响应

Soil Nutrient Contents and Their Responses to the Soil Core Transferring Experiment of Three Typical Natural Forests along the Changbai Mountain Transect

观察三叶草菌根侵染率，统计其根际土壤中丛枝菌根真菌的孢子密度和种类、并与原始接种土壤比较.牡丹AM菌根菌自然侵染率的调查

The colonization rate of the Trifolium root was counted , the density and the species number of AM fungi were also investigated . Natural Infection Percentage of Arbuscular Mycorrhizal in Chinese Tree-peony

本试验旨在从原始森林土壤中分离并筛选出对植物病原菌具有良好拮抗效果的放线菌，寻找新农用抗生素产生菌来源，并对其产生的抑菌活性物质进行初步的研究和分析。

This research aimed at isolating and screening of antagonistic actinomycetes with great activity to plant pathogens , searching for the source of new agri-antibiotics , studying and analyzing the antibacterial substances produced by them preliminarily .

研究结果表明，工程防护体系内土壤含水率整体高于原始沙面的土壤水分。

In this study we measured the moisture at the typical soil profile , and some results are concluded .

原始针叶林土壤总硝化速率最大值在7月，针阔混交林在9月，40年人工云杉林出现在8月。

The highest value in the natural coniferous forest was found in July , and September in the coniferous broadleaved forest , August in the 40 year-spruce plantation .

在41份出土Bt的土壤中，32份（78%）采自原始森林，14.6%土壤取自森林草地，7.4%属于大田土壤。

Among the 41 total soil samples containing B. thuringiensis , there were 32 soil samples ( 78 % ) collected from primeval forests , 14.6 % of samples obtained from grasslands , and only 7.4 % from agricultural soils .

长白山原始林和次生林土壤有效氮含量对模拟氮沉降的响应

Responses of Soil Available Nitrogen of Natural Forest and Secondary Forest to Simulated N Deposition in Changbai Mountain

长白山北坡原始林采伐对土壤性质影响的研究

Studies on the influence of felling on properties of soils under primitive forests on North Slope of the Changbai Mountains

九寨沟和黄龙自然保护区原始林与次生林土壤物理性质比较

Comparison of Soil Physical Properties under Primary and Secondary Forests in Jiuzhaigou and Huanglong Nature Reserves , Sichuan , China

为探讨落叶松人工林土壤因子的变化规律，采用标准地取样，室内常规分析的方法，测定了不同林龄的落叶松人工纯林、阔叶林、原始红松林下土壤的理化性质。

The physical and chemical properties of the soil in pure larch plantations of different ages , broad-leaved forest and natural Korean pine forest were measured by standard-plot sampling and normal lab analysis .

原始森林中拮抗性放线菌数量最多，提供了从原始森林土壤中可以筛选到更多拮抗性放线菌的重要信息。

Primeval forest contains the largest quantity of antimicrobal actinomycetes , so more and more antimicrobal actinomycetes information can be obtained from them .