紫色土

此外，土壤类型不同，根际细菌和放线菌的数量也不一样，黄壤＞黄色石灰土＞中性紫色土，黄壤和中性紫色之间的差异达到显著水平（p＜0.05）。

In addition , the amount of rhizosphere bacteria and actinomycetes differed among soil types in accordance with yellow earth yellow rendzina neutral purplish soil . Moreover , Significant differences of rhizosphere bacteria and actinomycetes were found between yellow earth and neutral purplish soil ( p0.05 ) .

结果表明，供试八种有机物均能显著促进镉从紫色土中的溶出。作用大小顺序为：EDTA≥DTPA>柠檬酸>胡敏酸>草酸>富里酸>酒石酸≥水杨酸。

Results showed that all the organic substances tested significantly promoted the solubility of cadmium from the purplish soil , with a magnitude sequence of EDTA ≥ DTPA > citric acid > humic acid > oxalic acid > fulvic acid > tartaric acid ≥ salicylic acid .

Fuzzy综合评判法在紫色土肥力评价中的应用

Application of Fuzzy Set in the Fertility Evaluation of Purple Soils

Cd对紫色土和冲积土微生物多样性的影响

Effect of Cd on Soil Microbial Diversity in Purple Soil and Alluvium Soil

缓释复合肥料在不同pH值紫色土中氨挥发特性

Characteristics of ammonia volatilization of slow release compound fertilizer in different pH values of purple soils

Cr（Ⅵ）在紫色土中的吸持作用

Retention of Cr (ⅵ) in Purple Soils

基于GIS的湘中紫色土丘陵地区土地资源类型划分

Land resource classification based on GIS for the purple soul unland region in the middle part of Hunan Province

酸性土壤的pH有下降的趋势。紫色土的pH值则随着熟化的进行逐步下降，向有利于植物生长的方向发展。

PH of acid soils showed the increasing trend , while ph of purple soil showed the decreasing trend in favor of plant growth .

通过平衡振荡法研究毒死蜱在中性紫色土腐殖酸（HA）上的吸附。

Adsorption of chlorpyrifos on humic acid ( HA ) of neutral purple soil was studied through balance vibration method .

紫色土草地表层土壤~（137）Cs含量与粒度和有机质的相关性研究

Relationship Between ~ ( 137 ) Cs Activities and Soil Particle Size in Purple Surface Soil on Grass Land

紫色土NH4~+、NO3~-的吸附-解吸特性研究

Research on the adsorption and desorption characteristics of ammonia and nitrate in purple soil

中国紫色土的微结构研究&兼论在ST制土壤基层分类上的应用

Approach to microstructure of purple soils in China & Concurrent study on its application in lower category of soils of soil taxonomy

沿江从上而下，全N、全P、有效P含量较稳定，全K、有效K、碱解N含量变化较大。不同土壤类型肥力比较结果表明全N、全P含量为黄壤>水稻土>紫色土；

The comparative results of fertility of different soil types show that the contents of N and P in the yellow soil is higher than those in rice soil and purple soil ;

通过模拟实验，研究了土壤pH对水稻土、紫色土和黄壤的水溶态、可交换态、碳酸盐态、铁锰氧化态、有机结合态和残渣态Cd含量的影响。

The effect of soil pH on various chemical species of cadmium in paddy soil , purple soil and yellow soil was studied by a series of simulated experiments .

采用野外调查、室内分析和定期监测相结合的方法，研究了紫色土区Cu、Pb、As、cd的污染来源与迁移。

The source and transference of Cu , Pb , As , Cd in purple soil area was studied by using the methods of investigation , analysis combined with regular monitoring .

在此基础上，以组件式GIS和关系型数据库为实现手段，研制出基于GIS的湘中紫色土丘陵综合治理农业生态工程信息系统。

On this basis , by means of module GIS and relation database , develops agriculture eco-engineering in the comprehensive controlling purple soil upland in the middle part of Hunan province that based on GIS .

紫色土中Cu、Zn共存低浓度范围内，竞争现象不明显，但随着初始浓度的增加，竞争现象逐渐明显。

In the range of low concentrations for the Cu and Zn coexisting in the purple soil , it is showed unremarkable competition , however , which gradually becomes fierce as the initial concentration goes up .

在一定pH条件下，石灰性紫色土、中性紫色土、酸性紫色土对同种重金属离子的吸附强度依次降低，与其表面电荷密度的大小相一致；

With a certain pH , the three soils absorbed the same heavy metal with strength in the order of calcareous purplish soils > neutral > acidic , which is in line with the order in surface charge density ;

主要研究结果如下：1桂阳烟区水稻土和紫色土均为壤质粘土，pH呈碱性，红壤为粘壤土，pH呈弱酸性。

The main results are as follows : 1The paddy soil and purple soil were loamy clay in texture and their pH was alkaline , while the red soil was clay loam in texture and its pH was slightly acidic .

本研究是希望动态模拟出DOM对紫色土中外源锌化学行为的影响，为环境保护和生态治理提供一定的依据。

In my research , it wish to simulation the development of the chemical behavior of zinc by added DOM in purple soil , and offer some value information for the ecosystem and environment treatment .

用DTPA法提取紫色土Zn、Gu、Fe、Mn表明，浸提温度与提取量之间呈线性相关。

The study showed that Zn 、 Cu 、 Fe and Mn extracted with DTPA from purple soils were significantly influenced by the extracted temperatuer . The correlation between the temperature and extracted amount was linear .

通过四川酸性紫色土、中性紫色土，石灰性紫色土中不同浓度的Cd、Cu、Pb、As对水稻根系过氧化物酶的影响研究，揭示了过氧化物酶受抑制与产生抗性的过程。

The influences of Cd , Cu , Pb and As on peroxidase of rice roots in violet soils of acidic , neutral and alkaline were studied and it was shown that the peroxidase underwent the processes of inhibition and producing resistance .

砾石是土壤中＞2mm以上的粗骨部分，广泛存在于四川盆地山区的紫色土中。

Rock fragments are the coarse fraction ( > 2 mm ) in soil , which widely exist in hilly purple soils of Sichuan basin .

以酸性紫色土（pH值5.45），粘黄壤（pH值4.99）和砂岩黄壤（pH值4.30）为供试土壤，利用盆栽试验比较分析了6个紫花苜蓿品种的生长表现。

Three types of acid soils : acid purple soil ( pH value 5.45 ), acid clay yellow soil ( pH value 4.99 ), and acid sandy yellow soil ( pH value 4.30 ), were used in a pot experiment to study the growth of 6 types of Medicago sativa .

利用模拟淋溶实验测定了中国几种土壤（砖红壤、赤红壤、红壤、黄棕壤和紫色土）的风化速率，并研究了土壤pH值和降水量对土壤风化速率的影响。

Through simulated leaching experiment , weathering rates of several soils ( including latosol , lateritic red earth , red earth , yellow brown soil and purplish soil ) in China , as well as the effects of soil pH value and precipitation rate on soils weathering , were studied .

通过对不同来源DOM对旱地紫色土有效N、P、K的影响的具体研究，得到了以下结论：（1）猪粪DOM与秸秆DOM的光谱特性不同。

The effect of DOMs extracted from different source on effective N , P , K in purple soil , have got the following conclusions : ( 1 ) The spectrum characteristics of DOM extracted from pig excrement is different from those of DOM extracted from straw .

由此可见，长期不同施肥对土壤CEC、粘粒及交换钾量产生影响，从而影响了紫色土K+吸附、解吸平衡时间及吸附、解吸平衡量。

As mentioned above the effects of long-term different fertilizer application on soil CEC , clay content and exchangeable K content affected the time and capacity of K + equilibrium adsorption and desorption in purple soil .

利用地统计学，结合GIS研究紫色土土壤表层（0～20cm）的有机质、速效氮、速效磷、速效钾4种养分含量的空间分布特征。

Geostatistical methods were used in combination of GIS information to analyze the spatial distribution characteristics of organic matter , and available nitrogen , phosphorus and potassium in the 0 ~ 20 cm layer of purple soil in Jiangjin , Chongqing .

研究了天然有机物胡敏酸和富里酸，螯合剂EDTA和DTPA和四种简单有机酸对紫色土镉的溶出效应和吸附解吸行为的影响。

Summary The effects of several organic substances , including natural humic acid and fulvic acid , artificial chelating agents EDTA and DTPA , and four simple organic acids on the solubility and adsorption desorption behaviors of purplish soil for cadmium were studied .

我国紫色土集中分布于四川盆地，目前对紫色土有机质研究方面，主要限于有机质数量与作用方面的研究，而DOM对土壤养分有效性影响的研究甚少。

The purple soil is distributed in Sichuan Basin . As to the purple organic research of soil at present , in our country , the research is mainly limited to the organic quantity and function , and the influence of DOM on the soil validity nutrient is very few .