Evaluation of Trace Elements in the Soil of Typical Peach Orchards in Zunyi City

[Objectives]This study was conducted to clarify the enrichment and paucity of trace elements in the soil environment of peach orchards in Zunyi City,and to provide reference for supplementary application of microelement fertilizers and high-quality peach production in peach orchards.[Methods]Taking the soil of three typical peach orchards(Taoli Renjia peach orchard,Pengrui peach orchard and Taohuadao peach orchard)in Shenxi Town,Honghuagang District,Zunyi City as the research object,the contents of trace elements in soil were analyzed through field sampling and indoor determination of trace elements.[Results]The effective contents of trace elements in the soil of peach orchard bases in the study area were at a medium level,and the soil of the peach orchards was rich in available Fe and Se.The contents of available Cu,Mo and Mn were relatively rich.The contents of available B were not high overall.The contents of available Zn were at a moderate to low level overall.The soil of Taoli Renjia peach orchard was relatively rich in trace elements.[Conclusions]The research results can provide a scientific basis for the production of high-quality crispy peaches in peach orchards.

Research on the Spatio-Temporal Evolution and Driving Forces of Green Spaces in the Central Urban Area of Zunyi City

Green space,as a medium for carrying out urban functions and guiding urban development,is becoming a scarce resource along with the urbanization process and the intensification of environmental problems.In the face of the spatial mismatch between high demand and low supply,it is of great significance to clarify the evolution mechanism of green space to undertake national spatial planning,protect the natural strategic resources in the urban fringe area,and promote the sustainable development of the“three living spaces.”The study focuses on the Zunyi City Center,selecting the 20 years of rapid development following its establishment as a city as the study period.It explores the dynamic evolution of green space and the main driving forces during different periods using remote-sensing image data.The study shows that from 2003 to 2023,the total scale of green space has an obvious decreasing trend along with the expansion of the urban built-up area.A large amount of arable land is being converted to construction land,resulting in a sudden decrease in arable land area.In the past 10 years,the comprehensive land use dynamics have accelerated.Still,the spatial difference has gradually narrowed,indicating that the overall development intensity of Zunyi City’s central urban area has increased.There is a gradual spread of the trend to the hilly areas.The limiting effect of the mountainous natural environment on the city’s development has gradually diminished under the superposition of external factors,such as economic development,industrial technological upgrading,and policy orientation so the importance of the effective protection and rational utilization of urban green space has become more prominent.

Analysis on the Economical and Intensive Utilization of Regional Construction Land in Zunyi City of Guizhou Province

Taking Zunyi City of Guizhou Province as research area, the research performed spatial dynamic analysis and elastic coefficient method to evaluate the e- conomical and intensive utilization of the regional construction land, and to discuss the decision direction for economical and intensive utilization of the regional con- struction land. The results showed that, the population based land utilization both in Zunyi and the city districts and counties indicated extensive trend. The economy- based land utilization in Zunyi City, as well as in Huichun, Zunyi and Tongzi County presented intensive trend, however the other districts and counties were in extensive tendency. It concluded that the economical and intensive utilization of construction land should be focused on the rural collective construction land, and the potential tapping of rural collective construction land in rocky desertification area should be the first priority, otherwise, the regional economic development was unbalanced be- tween different district and county in Zunyi.

Genesis for Rare Earth Elements Enrichment in the Permian Manganese Deposits in Zunyi, Guizhou Province, SW China

The Zunyi manganese deposits, which formed during the Middle to Late Permian period and are located in northern Guizhou and adjacent areas, are the core area of a series of large-medium scale manganese enrichment minerogenesis in the southern margin and interior of the Yangtze platform, Southern China. This study reports the universal enrichment of rare earth elements(REEs) in Zunyi manganese deposits and examines the enrichment characteristics, metallogenic environment and genesis of REEs. The manganese ore bodies present stratiform or stratoid in shape, hosted in the silicon–mud–limestones of the Late Permian Maokou Formation. The manganese ores generally present lamellar, massive, banded and brecciated structures, and mainly consist of rhodochrosite, ropperite, tetalite, capillitite, as well as contains paragenetic gangue minerals including pyrite, chalcopyrite, rutile, barite, tuffaceous clay rock, etc. The manganese ores have higher ΣREE contents range from 158 to 1138.9 ppm(average 509.54 ppm). In addition, the ΣREE contents of tuffaceous clay rock in ore beds vary from 1032.2 to 1824.5 ppm(average 1396.42 ppm). The REEs from manganese deposits are characterized by La, Ce, Nd and Y enriched, and existing in the form of independent minerals(e.g., monazite and xenotime), indicating Zunyi manganese deposits enriched in light rare earth elements(LREE). The Ceanom ratios(average-0.13) and lithofacies and paleogeography characteristics indicate that Zunyi manganese deposits were formed in a weak oxidation-reduction environment. The(La/Yb)ch, Y/Ho,(La/Nd)N,(Dy/Yb)N, Ce/Ce* and Eu/Eu* values of samples from the Zunyi manganese deposits are 5.53–56.92, 18–39, 1.42–3.15, 0.55–2.20, 0.21–1.76 and 0.48–0.86, respectively, indicating a hydrothermal origin for the manganese mineralization and REEs enrichment. The δ13 CV-PDB(-0.54 to-18.1‰) and δ18 OSMOW(21.6 to 26.0‰) characteristics of manganese ores reveal a mixed source of magmatic and organic matter. Moreover, the manganese ore, tuffaceous clay rock and Emeishan basalt have extremely similar REE fractionation characteristic, suggesting REEs enrichment and manganese mineralization have been mainly origin from hydrothermal fluids.

Sedimentary Features and Paleogeographic Evolution of the Middle Permian Trough Basin in Zunyi,Guizhou,South China

Based on detailed field surveys,numerous sections and drillcores as well as analyses of lithofacies and sedimentary facies,sedimentary differentiation in the Middle Permian Zunyi(northern Guizhou,South China)trough basin was studied in detail.Caused by activities of the Emeishan mantle plume,the regional extensional setting and the extinguishing of carbonate production factories were shown from Guizhou to Yunnan.Three types of sedimentary enironments were developed in the study area:platform,slope,and basin.In this work,we established a sedimentary model for the study area,identified 14 syndepositional faults,and created the detailed reconstruction of the trough basin via a sedimentological investigation.It is found that the paleogeographic evolution of the study area can be divided into six stages:(1)a pre-rifting stage,(2)rapid rifting and subsidence,(3)stable rifting and subsidence,(4)the second stage of rifting and subsidence,(5)silicification,and(6)regional uplift and denudation.The sedimentary features and paleogeographic evolution of the Maokou Formation in Zunyi show that the platform,slope,and basin sedimentary features coexisted.In addition,the extensional setting and extinguishing of carbonate production factories were important preconditions for the evolution of the platform region in the study area,and the activity of syndepositional faults also played an important role in the paleogeographic evolution of this area.

试论“家庭教育遵义模式”

家庭教育模式就是在一定区域内实施家庭教育的标准样式。家庭教育“遵义模式”是党政引领、部门联动、家庭教育与未成年人心理健康教育融合发展的普适、普惠模式。家庭教育遵义模式具有一般性、区域性、简单性、稳定性、可操作性等特征。

不同控草方式对花椒地杂草生长及土壤养分的影响

为明确花椒地不同控草方式对杂草生长的影响,在遵义市红花岗区花椒基地设置4种不同控草措施(处理),即:除草剂(T1)、鼠茅草(T2)、防草布(T3)、秸秆覆盖(T4),以自然生草作为对照(CK),对比分析不同控草方式对花椒地杂草种类、数量、生物量以及土壤肥力的影响,评估不同处理的控草效果。结果表明:花椒地共出现杂草种类26种,归属16个科;4个处理均对花椒地杂草起到了不同程度的抑制效果,其中T3效果最好,仅发现4种杂草,较CK减少10种,且杂草密度和生物量均为最低,株防效和生物量防效均超过了97%;T2次之,株防效和生物量防效在5月超过了60%,在7月超过了80%;T1与T4在后期效果差;4个处理中仅T4对土壤肥力有明显的提升效果,其他处理未产生显著影响。综合来看,防草布覆盖、间种鼠茅草2种控草方式可作为遵义地区花椒地的控草技术进行应用。

红色文化遗存及其开发利用研究——以遵义市为例

遵义是中国革命的伟大转折地,是红军长征途中停留时间最长的城市,拥有丰富的红色文化遗存,是传承红色基因、赓续红色血脉不可多得的宝贵资源。文章分析了遵义红色文化遗存现状及问题,提出从合理统筹、“活化”利用、打造品牌、凝聚合力等方面推进遵义红色文化遗存保护利用各项工作,以便在新时代为遵义的高质量发展注入强劲动力。

资源中心建设背景下遵义农村幼儿园游戏材料本土化实践与应用

在贵州省大力推进农村幼儿园集团化管理资源中心建设背景下,遵义市高校理论工作者、学前教育发展中心研训工作者、学前教育教研指导责任区工作者和幼儿园实践工作者,共同进行遵义市农村幼儿园游戏材料本土化的实践探索,在此过程中取得了区域推进新机制、项目实施新步骤、高校学前教育专业实践教学新模式,以及幼儿园游戏材料本土化等一系列成果,具有一定推广价值和实践意义。

遵义市植烟土壤肥力综合评价及空间分布

了解遵义市植烟土壤综合肥力状况,为烟草种植规划提供理论支持。在遵义市13个区(县)168个乡镇采集3772份植烟土壤样品进行化学性状测定,运用模糊数学法评估植烟土壤肥力状况,采用Kriging插值法绘制植烟土壤化学性状和综合肥力评价空间分布图。结果表明:①遵义市植烟土壤酸碱度、有机质、碱解氮、有效磷、速效钾的含量相互间呈极显著相关关系;有机质、碱解氮含量达到高或较高水平,土壤有效磷、速效钾含量较高,保障了烤烟生长所需的主要营养;②植烟土壤各肥力指标具有明显的空间变异特征,有机质与碱解氮分布基本一致,呈现极大的关联性,有机质、碱解氮和有效磷为斑块状分布态势,土壤pH值和速效钾呈块状分布。其中钾含量较高的区域与土壤pH值较低区域基本一致;③遵义市植烟土壤肥力综合评价得分为0.73,变异系数为16.8%,Ⅰ~Ⅲ级合计占比超过93%,遵义市植烟土壤肥力状况较好,空间变异较小。综合来看,遵义市植烟土壤肥力能供给优质烟叶生产的需求,但部分地区仍需加强有机肥、氮肥的使用,针对不同区域的肥力差异进行改良。

遵义市2021—2023年性早熟女童的昼夜自发性促性腺激素水平检测

目的探讨与分析2021—2023年遵义市性早熟女童的昼夜自发性促性腺激素水平检测价值。方法选择2021年9月—2023年3月在遵义市妇幼保健院诊治的78例性早熟女童作为性早熟组,同期选择在遵义市妇幼保健院进行体检的78名健康女童作为健康组。检测两组昼夜自发性促性腺激素水平、25-羟维生素D、性激素结合球蛋白含量,同时判定所有女童的卵泡生长状况。结果性早熟组子宫长径、卵巢容积、总卵泡数、最大卵泡直径都显著高于健康组(P<0.05)。性早熟组夜间自发血、日间自发血的血清促黄体生成素、促卵泡生成素含量都显著高于健康组(P<0.05)。性早熟组空腹血清25-羟维生素D、性激素结合球蛋白含量都低于健康组(P<0.05)。在78例性早熟女童中,Spearman分析显示夜间自发血、日间自发血的血清促黄体生成素、促卵泡生成素含量、子宫长径、卵巢容积、总卵泡数、最大卵泡直径、25-羟维生素D、性激素结合球蛋白与女童性早熟存在相关性(r=0.744、0.699、0.714、0.766、0.794、0.636、0.715、0.677、-0.688、-0.714,P<0.05)。结论2021—2023年遵义市性早熟女童多表现为子宫长径、卵巢容积、总卵泡数、最大卵泡直径增加,也伴随有昼夜自发性促性腺激素水平升高与血清25-羟维生素D、性激素结合球蛋白含量降低,对性早熟女童的昼夜自发性促性腺激素水平检测具有重要的临床价值。

基于两次发酵法遵义特色泡辣椒游离氨基酸组成的主成分分析及综合评价

为探究两次发酵技术对泡辣椒品质的影响,以两次发酵遵义特色泡辣椒为研究对象,通过测定分析其脆度、色泽、氨基酸态氮、游离氨基酸差异,并采用味道强度值(taste activity value,TAV)、主成分分析(principal component analysis,PCA)进行综合评价,明确泡辣椒中游离氨基酸的含量、组成与呈味的多样性。结果表明:4种泡辣椒(新鲜、传统自然一次发酵30 d、两次发酵、传统自然一次发酵150 d)中氨基酸态氮含量分别为0.05、0.17、0.24、0.18 g/100 g,两次发酵特色泡辣椒的氨基酸态氮含量最高,且脆度保持较好,色泽鲜红。在4个样品中分别检测出13、15、16、15种氨基酸,呈味特性表现为鲜味氨基酸>甜味氨基酸>苦味氨基酸,其中谷氨酸对泡辣椒风味的影响最大,TAV值为9.67~45.67。通过主成分分析提取3个主成分,累积方差贡献率高达98.584%,能较好地反映出样品中游离氨基酸的综合信息,其中谷氨酸、苏氨酸、缬氨酸、甲硫氨酸、异亮氨酸、组氨酸、精氨酸、甘氨酸、半胱氨酸、亮氨酸、酪氨酸对泡辣椒滋味影响程度最大,并由各个主成分的综合得分得到遵义特色泡辣椒综合得分最高。综合评价发现两次发酵遵义特色泡辣椒相较于新鲜与传统自然一次发酵泡辣椒中游离氨基酸的综合品质更好,此为泡辣椒发酵技术的改进及泡辣椒风味的人工控制提供理论基础。

贵州遵义共青湖锰矿床主要地质特征及深部找矿潜力分析

共青湖锰矿床与铜锣井大型锰矿床、深溪大型隐伏富锰矿床同位于深溪-八里Ⅲ级地堑盆地中,含锰岩系为茅口组第三段,锰矿体位于含锰岩系下部,矿体埋深800~450 m,锰矿体厚度小但较稳定,一般为0.8~0.9 m,Mn平均品位为16.62%,目前深部矿体尚未圈边。通过对共青湖锰矿床地质特征分析,认为其属“气液喷溢沉积型”锰矿床,总体位于成锰过渡相中,显示该区深部有较大找矿潜力。

贵州遵义市冯家湾锰矿地质特征及找矿潜力

冯家湾锰矿位于黔北裂谷盆地锰矿区内遵义-黔西锰矿成矿带,属于遵义锰矿成矿亚带的深溪-八里锰矿带,遵义锰矿主要分布在该锰矿带内,位于冯家湾Ⅳ级地堑盆地沉积中心位置。埋藏深度为0~557 m,矿体赋存于二叠纪茅口组第三段,Mn平均品位为13.69%,平均厚度为1.37 m;研究区内浅部为氧化锰矿石,深部为碳酸锰矿石,碎屑状、鲕状和块状构造。通过对冯家湾锰矿地质特征分析,认为其属于典型的“气液喷溢沉积型”锰矿床,位于成锰中心边缘,显示具有较大的找矿潜力。

贵州遵义沙坝沟地区茅口组硅质岩-粘土岩沉积建造成因研究

贵州遵义地区中二叠统茅口组中上部发育特殊的硅质岩-粘土岩沉积建造,其对区域沉积作用、构造及古地理演化具有重要的指示意义。本文以遵义沙坝沟地区中二叠统茅口组中上部沉积建造为研究对象,通过野外剖面观察、岩石学、矿物学及地球化学手段分析硅质岩、粘土岩的物源及成因。硅质岩-粘土岩沉积建造见厚层-块状构造、角砾状构造、条带状构造及气孔状构造。结合微量元素及稀土元素特征,认为该硅质岩-粘土岩沉积建造形成于大陆边缘的氧化环境中,硅质岩具有典型的热水沉积成因,粘土岩为热水物质与陆源物质混合成因,与中二叠世茅口中晚期地幔柱活动具有显著的成因联系。

贵州遵义铜锣井大型锰矿床地质特征

贵州遵义铜锣井大型锰矿床位于鄂渝湘黔前陆褶皱冲断带西部,遵义次级成矿亚带的深溪-八里锰矿矿带。矿区主要出露地层为寒武系第三统-芙蓉统、奥陶系下统娄山关组,奥陶系下统桐梓组、红花园组、中-下统湄潭组,二叠系阳新统梁山组、栖霞组、茅口组,乐平统龙潭组、长兴组地层,三叠系下统夜郎组、中-下统嘉陵江组、中统关岭组地层,第四系。锰矿体产于二叠系阳新统茅口组第三段含锰岩系下部,呈层状、似层状产出,矿石结构主要为内碎屑结构,纹层状、斑杂状、块状构造,矿体厚度与含锰岩系厚度呈正相关,矿体厚度为0.3~3.5 m, Mn品位为12%~31%,平均为19.27%。

基于天地图的遵义红色旅游信息系统设计与实现

基于天地图的红色旅游服务系统,是空间信息技术与红色文化传播、旅游产业发展的一次深入融合,有利于直观地展现红色旅游信息资源,加强新时期爱国主义教育。本文以“天地图·遵义”建设为契机,充分结合遵义市红色文化特点,运用空间地理信息等现代科技手段建立遵义市红色旅游信息系统,将红军在遵义的重大革命事件、战斗遗址、行军路线,红色旅游等红色内容数字化、系统化,直观地展示中国共产党在遵义波澜壮阔的伟大征程,为社会公众了解遵义红色文化,为加强国民爱国主义教育提供素材。

遵义会议精神融入高校思政课教学的价值意蕴与实践路径

遵义会议是中国革命史上一个重要里程碑,对推动中国革命走向胜利和中国共产党实现自身历史性变革具有重大意义。随着社会经济文化的不断发展,人们的思想观念日益多元化、多样化,思想政治教育面临着新情况、新问题。特别是随着互联网技术的快速发展,大学生获取信息的渠道日益丰富,再加上网络信息内容良莠不齐,导致部分大学生在价值观念、行为准则等方面出现一些问题。将遵义会议精神融入高校思政课教学为解决这一问题提供了重要的价值意蕴和实践路径。

遵义市自然保护区珍稀濒危物种丰富度及保护优先区分析

自然保护区在维持和恢复珍稀濒危物种的生存力、保护自然生态系统与生物多样性等方面发挥着重要作用。明晰遵义市自然保护区保护现状及其保护效益,进而分析遵义市保护区的保护优先序列,对保护区内实施科学合理的保护与管理具有重要的意义。依据全省已建立的自然保护区信息评价分析所筛选出的保护优先区的保护现状,利用Dobson筛选法识别自然保护区重点保护物种及其分布格局。结果表明:(1)在珍稀濒危物种丰富度分布上,遵义市自然保护区物种保护呈现西北—东南密、西南—东北疏的特征;(2)采用“累积筛选”法共鉴别出对遵义市保护贡献率较高的前6个保护区,其保护贡献率累计达90%;(3)遵义市珍稀濒危动植物基本都受到了较为全面的就地保护,但仍存在保护空缺,这些保护空缺的识别可为遵义市自然保护区的发展规划工作提供一些参考。

黔北遵义地区地热水化学特征及成因

黔北遵义地区地热资源丰富,但研究程度低,成因机制不明,制约了区内地热资源的合理开发利用。文章以遵义地区天然温泉和地热井为研究对象,采集了6组地热水样进行水化学组分、氢氧同位素分析,探讨了该地区地热水的成因。结果表明:研究区地热水水化学类型为SO_(4)-Ca·Mg、Cl·SO_(4)-Na·Ca、HCO_(3)-Ca·Mg、HCO_(3)-Na·Ca及HCO_(3)-Ca·Na·Mg型,有益元素主要有Sr、Li、H_(2)SiO_(3)、F。地热水中的Ca^(2+)、Mg^(2+)、HCO_(3)^(-)主要来源于白云石、方解石的溶解;盐津桥和坛厂地热水中的Ca^(2+),除来自于白云石、方解石的溶解外,可能有富石膏白云岩或膏盐层中石膏溶解产生的Ca^(2+)加入;地热水中SO_(2)^(4-)离子主要来源于石膏的溶解。四川含盐盆地古卤水的注入导致盐津桥地热水富Na^(+)、K^(+)、Cl^(-)。地热水的补给来源为大气降水,补给区位于研究区中部的大娄山一带,补给高程为1310.0~1391.2 m,补给区年平均气温为4.4~8.3℃。利用二氧化硅温标估算的热储温度为53~95℃,地热水循环深度为1372~2633 m。硅-焓模型估算的地热水冷水混入比例为76%~92%。区内地下水在大娄山区接受大气降水入渗补给,经深循环并受深部热流加热后,沿导水断裂上升至地表,形成天然低温温泉,或在背斜核部断裂带附近经人工钻探形成地热井。