核桃丰产栽培技术

核桃是一种经济价值很高的油料树种,是山区群众经济收入的重要来源。本文就核桃丰产提出了合理建园、选好品种、整形修剪、矮化密植、病虫防治等一系列栽培技术,以提高核桃产量和质量。     

美国黑核桃组织培养的初步研究

对美国黑核桃的组织培养及其繁殖进行了初步的研究。结果表明:(1)1/2MS+6-BA 0.5～4mg/L(单位下同)和NAA0.01～0.5组合均能促进黑核桃腋芽或顶芽的萌发与生长;(2)MS+6-BA 1+NAA 0.05+2ip1.0的组合有利于黑核桃继代培养中试管苗的快速生长;(3)6-BA 3与NAA 0.01组合有利于黑核桃茎段愈伤组织的诱导形成。     

大庆市大树移植状况调查分析

通过对大庆市铁人大道、龙凤湿地公园、唯美主义居住区、新城风景居住区2011—2013年移植的大树成活状况的调查,指出不同树种成活率存在差异:蒙古栎、核桃楸成活率最低,春季移植树木成活率高于秋冬季,山里移植的大树成活率低于乡村和苗圃。指出造成大树移植死亡的主要原因是土壤盐碱、冬季寒冷多风及栽培技术不规范。     

浅析核桃嫁接技术

核桃,在国际市场上它与扁桃、腰果、榛子一起,并列为世界四大坚果。核桃是优良的干果和木本油料树种,果品营养丰富,经济价值很高,是一种广泛栽培的经济林树种。核桃实生苗结果后品质差、商品率低,利用嫁接技术,选择优良品种进行改良能够较好地解决上述问题,以达到高产稳产、高效的目的。     

武威市核桃播种育苗技术

核桃是经济价值和营养价值都很高的木本油料树种，核桃仁含脂肪60％～75％，蛋白质17％～27％，碳水化合物10．8％，而且含有较高的钙、磷、铁、钾和多种维生素，具有很高的营养价值；同时还具有补气养血、止咳化痰、温胸补肾、润肤的药用价值，是世界四大干果之一，是优良的经济林栽培树种；核桃树喜光耐旱、耐寒，对土壤适应性强，也是很好的生态防护和节水树种。为满足社会需求，大力发展核桃产业势在必行。武威市光温条件充足，适合核桃栽培，发展核桃产业，就必须有足够的优良品种苗木供应，为解决市场上核桃苗短缺的局面，开展核桃实生苗繁育。     

影响核桃嫁接成活率的主要因素及应对措施

核桃嫁接,是核桃良种苗木繁育和核桃低产园品种改良的重要技术环节,对促进核桃产业实现品种良种化有着重要作用。但由于核桃树种的特殊性,嫁接成活率一直不高,成为核桃生产中的技术难点问题。近年来,随着核桃产业的快速发展,核桃嫁接技术也进行了探索和创新,嫁接成活率有了较大的突破。本文就影响核桃嫁接成活率的主要因素进行了探讨,并提出了相应的技术措施。     

核桃JrERF2⁃2基因克隆及其对逆境的响应

核桃（Juglans regia）是我国重要的木本粮油战略及扶贫攻坚树种,其生长发育受不良环境条件制约,但目前核桃响应逆境的适应机制尚不明确,影响了核桃产业的科学管理,妨碍了核桃产业综合效益的提高。该研究筛选优良抗逆候选基因,以揭示核桃抗逆适应机制。     

佛坪县核桃丰产栽培技术措施浅析

核桃是佛坪县的主要经济林树种，在近年得到了快速发展。佛坪县在生产实际中，总结了良种壮茁、浅栽植、施肥、修剪、病虫害防治等配套的综合技术措施，为当地的核桃产业发展起到了科技示范作用。     

核桃的生物学特性及生态价值

一、核桃的植物学性状 核桃在分类上属于双子叶植物纲、胡核目、胡桃科、胡桃属。是渐危种，为珍贵的第三纪温带落叶阔叶林的残遗植物，被列为我国Ⅱ级保护植物。我国有八个种（含引入的三个种），分别是核桃、铁核桃、核桃楸、野核桃、麻核桃、吉宝核桃、心形核桃和黑核桃。其中我国用于经济栽培的主要是核桃和铁核桃两个种，铁核桃又称漾濞核桃或泡核桃。核桃在我国南北各地均有栽培，铁核桃则主要分布在云南、     

美国山核桃栽培技术

美国山核桃是世界著名的高档油料、稀有干果树种，营养丰富，脂肪中89％为不饱和脂肪酸，是高档健脑食品，具有医疗保健作用，国内外市场潜力较大。省委、省政府和州委、州政府高度重视美国山核桃的发展。提出全省发展3000万亩和全州发展2000万亩的目标。为发展美国山核桃，促进山区人民增收致富．县园艺站2002年引进美国山核桃种植300亩，到2008年发展到7350亩，     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that