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鄢陵县花卉土壤养分特征及评价

热带农业科学 2015年第3期35卷 23-26,30页

作者：孙艳丽王云董东平许昌学院城乡规划与园林学院河南许昌461000

以鄢陵县花卉土壤为研究对象,通过野外采样和室内分析对表层（0-10 cm）土壤养分特征进行研究。结果显示：鄢陵县花卉土壤速效氮含量为4.33-25.77 mg/kg,均值（13.57±6.70）mg/kg,属于土壤养分分级的第6级水平;速效磷含量为50.37-147.3... 详细信息

以鄢陵县花卉土壤为研究对象,通过野外采样和室内分析对表层（0-10 cm）土壤养分特征进行研究。结果显示：鄢陵县花卉土壤速效氮含量为4.33-25.77 mg/kg,均值（13.57±6.70）mg/kg,属于土壤养分分级的第6级水平;速效磷含量为50.37-147.3 mg/kg,均值（94.09±24.17）mg/kg,属于第1级水平;速效钾含量为22.35-192.8 mg/kg,均值（96.32±43.67）mg/kg,整体上属于第4级水平;有机质含量为20.98-74.43 g/kg,均值（50.69±13.82）g/kg,属于第1级水平。花卉土壤综合肥力指数为（1.79±0.12）,属于三等土壤,肥力水平一般。因而建议：施用有机肥中和土壤碱性;增施氮肥,合理补充钾肥,协调土壤中氮、磷、钾的比例,提高花卉的质量和产量。

关键词：土壤养分花卉土壤评价鄢陵县

The ULT1 and ULT2 trxG Genes Play Overlapping Roles in Arabidopsis Development and Gene Regulation

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Molecular Plant 2013年第5期6卷 1564-1579页

作者： Mona M. Monfared Cristel C. Caries Pascale Rossignol Helena R. Pires Jennifer C. fletcher Plant Gene Expression Center USDA-ARS/UC Berkeley 800 Buchanan Street. Albany CA 94710 USA Department of Plant and Microbial Biology University of California Berkeley 111 Koshland Hall Berkeley CA 94720 USA CNRs UMR5168 F-38054 Grenoble France Universite Grenoble Alpes UMR5168 F-38041 Grenoble France CEA iRTSV Laboratoire Physiologie Cellulaire et Vegetale F-38054 Grenoble France INRA F-38054 Grenoble France Department of Molecular Cellular and Developmental Biology Yale University New Haven CT 06520 USA Faculdade de Ciencias da Universidade do Porto Porto Portugal

The epigenetic regulation of gene expression is critical for ensuring the proper deployment and stability of defined genome transcription programs at specific developmental stages. The cellular memory of stable gene expression states during animal and plant development is mediated by the opposing activities of Polycomb group （PcG） factors and trithorax group （trxG） factors. Yet, despite their importance, only a few trxG factors have been characterized in plants and their rotes in regulating plant development are poorly defined. In this work, we report that the closely related Arabidopsis trxG genes ULTRAPETALA1 （ULT1） and ULT2 have overlapping functions in regulating shoot and floral stem cell accumula- tion, with ULT1 playing a major role but ULT2 also making a minor contribution. The two genes also have a novel, redun- dant activity in establishing the apical-basal polarity axis of the gynoecium, indicating that they function in differentiating tissues. Like ULT1 proteins, ULT2 proteins have a dual nuclear and cytoplasmic localization, and the two proteins physically associate in planta. Finally, we demonstrate that ULT1 and ULT2 have very similar overexpression phenotypes and regulate a common set of key development target genes, including floral MADs-box genes and class I KNOX genes. Our results reveal that chromatin remodeling mediated by the ULT1 and ULT2 proteins is necessary to control the development of mer- istems and reproductive organs. They also suggest that, like their animal counterparts, plant trxG proteins may function in multi-protein complexes to up-regulate the expression of key stage- and tissue-specific developmental regulatory genes.

关键词： trxG factor epigenetics stem cells Arabidopsis polarity ULTRAPETALA.

热处理—电镀车间冲洗工艺改进及废水综合处理

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金属制品 2009年第6期35卷 59-61,65页

作者：徐卫平徐红董东黄炎江苏法尔胜股份有限公司江苏江阴214433 法尔胜集团公司江苏江阴214433

热处理—电镀生产过程中原有冲洗工艺是采用连续多道次的自来水对钢丝直接冲洗,将冲洗水进行沉淀及中和处理后由排水管网直接排放,消耗大量水资源的同时也对环境造成污染。采用多级冲洗新工艺,即沿着钢丝行走的方向,冲洗槽液面由低到高... 详细信息

热处理—电镀生产过程中原有冲洗工艺是采用连续多道次的自来水对钢丝直接冲洗,将冲洗水进行沉淀及中和处理后由排水管网直接排放,消耗大量水资源的同时也对环境造成污染。采用多级冲洗新工艺,即沿着钢丝行走的方向,冲洗槽液面由低到高,逐道清洗。对废水进行综合处理,经过调节池、中和反应器、固液分离池、污泥浓缩池等处理后,废酸水的ph为7～9,ρ(COD)为60 mg/L,ρ(Fe)为1 mg/L,ρ(Zn)小于1 mg/L,ρ(ss)为20 mg/L,各种指标都达到《污水综合排放标准》(GB 8978—1996)一级标准。冲洗工艺的改进及废水综合处理,使自来水消耗和废酸水排放大大减少,每年可节约生产成本36.67万元。

关键词：酸洗废酸水冲洗槽调节池中和反应器固液分离池污泥浓缩池

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油菜粕中芥子油甙的提取及精制工艺

食品研究与开发 2011年第10期32卷 67-70页

作者：李建颖卜路霞赵彦巧石军王志娟董东英天津商业大学生物技术与食品科学学院天津市食品生物技术重点实验室天津300134 天津农学院基础科学系天津300384

通过考察不同大孔吸附树脂对自油菜粕中提取的芥子油甙粗提液的吸附和脱附效果,对芥子油甙的精制工艺进行研究,并采用高效液相色谱法对其进行定性分析。结果表明:D201GF大孔强碱性阴离子交换树脂对芥子油甙的吸附效果最强,最大饱和吸附... 详细信息

通过考察不同大孔吸附树脂对自油菜粕中提取的芥子油甙粗提液的吸附和脱附效果,对芥子油甙的精制工艺进行研究,并采用高效液相色谱法对其进行定性分析。结果表明:D201GF大孔强碱性阴离子交换树脂对芥子油甙的吸附效果最强,最大饱和吸附量为35.57μmol/g,ph无需调整,温度为50℃,吸附时间为15 min;洗脱剂选用1 mol/L的NaCl溶液,洗脱30 min,洗脱率达98%。

关键词：芥子油甙菜粕提取精制大孔吸附树脂

Novel ecosystems created by coal mines in central Queensland’s Bowen Basin

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Ecological Processes 2013年第1期2卷 368-379页

作者： Peter D Erskine Andrew T fletcher Centre for Mined Land Rehabilitation The University of QueenslandBrisbane QLD 4072Australia

Introduction:Open-cut coal mining began in central Queensland’s Bowen Basin approximately 50 years *** this period of time,mine rehabilitators have used a variety of tree,shrub,and groundcover species to create‘novel ecosystems’to stabilise soils and provide vegetative cover for pre-supposed final end-land *** examine post-mining rehabilitation from multiple soil and vegetation monitoring activities in the Bowen Basin to assess the similarity of landforms,plant composition,and trends in plant diversity compared to unmined reference ***:Rehabilitated spoil dumps and reference sites were assessed using soil and vegetation data contained in compliance monitoring reports from Goonyella Riverside,Moura,Oaky Creek,Rolleston,and Blackwater ***,soil chemistry,and plant species mixes of rehabilitation aged from 2 to 22 years were compared to selected reference ***:Mines in this region have generally proposed one of two post-rehabilitation end-land uses:either pasture for cattle grazing or reconstructed native communities which potentially provide native fauna *** data from a selection of these mine sites suggest that when their rehabilitation was compared to nearby reference sites median slope values were between 2.5 and 7 times steeper and soil ph,electrical conductivity,and phosphorus levels were significantly *** steeply sloped landforms,poor soil characteristics,depauperate native species pool,and uniform presence of exotic pasture grasses in the rehabilitation indicate that most of these newly created ecosystems should not be used for cattle grazing and also have few natural ***:Legislative and community expectations have changed progressively over time and,although much of the rehabilitation is currently dominated by an assemblage of exotic buffel grass(Cenchrus ciliaris)and Acacia spp.,recent environmental authorities suggest these‘novel ecosystems’will be judged against native refere

关键词： Coal mining Completion criteria Environmental conditions Novel ecosystems

Effect of Copper, Zinc and Boron on Green Leaf Retention and Grain Yield of Winter and spring Cereals

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Journal of Agricultural science and Technology(B) 2015年第6期5卷 365-375页

作者： syed shah sarah Hookway Andrew Richards Carl Flint sarah Wilkinson John Mark fletcher Agrii Technology Centre (AgriiFocus) North Farm Swindon SN8 2JZ UK

Crop nutrition has a significant effect on disease incidence, resistance or tolerance of various crops. There is currently a lack of reliable recent UK-based research about the effect of copper, zinc and boron on disease incidence, green leaf area （GLA）, green leaf retention （GLR） and grain yield of winter wheat, spring wheat and spring barley. Data analysis showed that these trace elements had positive effects on GLR. These positive effects may have been due to the role of copper, zinc and boron in the production of defence related compounds （phenolics and lignin）, which may have reduced the disease incidence resulting in prolonged GLR. Grain yield was significantly enhanced by the application of these trace elements on the crop grown on high ph calcareous soil, which can be partly attributed to enhanced GLR. Also trace elements have a positive role in reproductive growth, flowering and male fertility. On average, zinc was found to be the most consistent trace element in terms of enhancing GLR and grain yield. Across all trials, it was noted that for every 10% increase in GLA from trace elements, grain yields increased by 4.2% in 2012-2013, by 4.4% in 2013-2014 in winter wheat and by 3.9% in spring wheat in 2014. These are remarkably consistent and indicate that increasing GLA by 10% by early dough stage was associated with a yield improvement of about 4%. These trace elements also had a positive effect on grain protein content （GPC）. This research concluded that the trace elements had positive effects in enhancing GLA and yield. It can be speculated that with the use of these trace elements, there may be more scope for using less robust or reduced rates of fungicides to control foliar diseases, which may help to maximize farm profits.

关键词： Trace elements copper zinc boron cereals GLR grain yield.