紫花苜蓿喷施赤霉素效应的研究

以4年生紫花苜蓿阿尔冈金（Medicago sativa L.Algonquin）为试验对象,以赤霉素（GA3）为试材,2005年在内蒙古民族大学农场进行叶面喷施试验,结果表明：低浓度喷施赤霉素促进紫花苜蓿株高的生长,100mg/kg喷施浓度下,4茬株高的平均值较CK、200mg/kg、300mg/kg分别增加12.2%、6.8%、7.2%.不同喷施浓度下各茬间的节间数、节间距和分枝数变化趋势不尽相同,但总体上表现为低浓度喷施具有促进作用.从4茬总产量来看,各处理均高于CK,100mg/kg、200mg/kg、300mg/kg处理较CK分别增产14.8%、7.5%、7.8%,且100mg/kg处理与CK差异达到显著水平（P〈0.05）.随喷施浓度的增加粗蛋白含量增加,粗纤维含量下降.     

外源硒对胡萝卜生理生化特性、富硒性及其产量的影响

采用不同浓度亚硒酸钠（NasSeO3）进行胡萝卜叶面喷施田间试验，研究硒对胡萝卜硒富集、产量及其生理生化特性的影响．结果表明：叶面施硒可明显提高胡萝卜中各形态硒含量，随施硒量的增加，有机硒转化率随之上升；其全硒、有机硒含量在最大处理浓度（500mg/kg）最高，分别是CK的15．9和26．6倍．施硒除在个别硒浓度提高SOD和CAT活性外，其余浓度酶活降低；施硒低于10mg／kg时有利于胡萝卜叶绿素合成；硒对胡萝卜光和速率则表现负效应．施硒胡萝卜产量较对照降低未达显著水平．综合分析硒对胡萝卜含硒量、产量及其生理生化、以及对人、畜食用的安全性，施硒量以不超过1．0mg／kg为宜．     

叶面施锰对豌豆生物效应的影响

豌豆不同生长期用不同浓度的硫酸锰溶液进行叶面喷施,结果表明,在幼苗期、现蕾期和开花期喷施不同浓度硫酸锰溶液,能增强豌豆叶片的SOD活性和CAT活性,降低O2^*-生成速率和MDA含量．在豌豆生长的幼苗期、现蕾期和开花期叶面喷施0．1％～0．2％的硫酸锰溶液能促进豌豆的生长和产量的增加。     

烯效唑不同浓度处理双低油菜幼苗对产量的影响

双低油菜2．5叶期喷施5％可湿性粉剂烯效唑10mg／kg、20mg／kg、40mg／kg，均比对照有较好的增产优势，以喷施40mg／kg苗期生长势强，经济性状好，可提早成熟2d，比对照不喷施烯效唑增产优势显著。可供生产上优先选用。     

叶面施硼对蚕豆膜脂过氧化作用及膜保护系统的影响

蚕豆不同生长期用不同浓度的硼酸溶液进行叶面喷施．结果表明，在幼苗期、现蕾期和开花期喷施不同浓度硼酸溶液，能增强蚕豆叶片的SOD活性和CAT活性，降低O2^-生成速率和MDA含量．于开花期前喷施0．1％-0.2％的硼酸溶液最为有效．     

BN系列生长调节剂在油菜上的应用效果初报

研究结果表明：在油菜的抽薹期和初花期以清水为对照，分别喷洒BN－1型浓度为4mg/kg,6mg/kg,8mg/kg和BN－2型浓度为2mg/kg,4mg/kg,6mg/kg的生长调节剂均能使油菜角果变宽，表面积增加，光合面积增大，促进了光合产物的形成 和积累，对籽粒浆增生起到了重要作用，油菜单株产量显著提高，在油菜抽薹期以BN－1型浓度为8mg/kg的效果良好，初花期则以BN－1型6mg/kg的效果最好，另外BN－1型浓度6mg/kg的处理对油菜抽薹速度有显著的促进作用，BN－2型4mg/kg次之。     

不同育苗方式对辣椒农艺性状产量产值构成的影响

经过对漂浮育苗、沼液营养块育苗、营养块育苗、浅水育苗等4种育苗方式对辣椒农艺性状及产量产值构成影响的研究,结果表明：（1）漂浮育苗、沼液营养块育苗、营养块育苗、浅水育苗的辣椒苗素质优于CK。（2）生育期分别比CK多10d、9d、7d、5d;（3）单果干重分别比CK增加0．21g、0．16g、0．08g、0．06g。（4）干重667m2分别为285．3kg、263．1kg、258．5kg、245．5k,比CK分别增加53．7kg、31．5埏、26．9kg、13．9kg,比CK分别增产23．19％、13．6％、11．15％、6％;漂浮育苗比沼液营养块育苗、营养块育苗、浅水育苗的干重667m2分别增加22．2kg、26．8kg、39．8kg,分别增产7．78％、9．93％、13．95％;沼液营养块育苗比营养块育苗、浅水育苗的干重667m2分别增加4．6kg、17．6kg,分别增产1．75％、6．69％;营养块育苗比浅水育苗的干重667m2增加13k,增产5．3％;（5）纯收入分别比CK多收入538．1元、409．5元、349．7元、20．7元,分别增加30．56％、23．26％、19．86％、1．18％;沼液营养块育苗、营养块育苗、漂浮育苗每投资1元,分别比CK多收入0．33元、0．28元、0．22元。     

丰产宝在棉花新品种上的应用试验初报

通过1997年丰产宝在棉花新品种上的应用试验，证明喷施丰产宝能使棉花新品种的平均单株成铃数增加0．7─1．0个，铃重增加0．47—0．91g，衣分率提高2．6％—3．7％。从而增产效果显著，有较好的推广利用前景。     

硒对蛹虫草生长发育的影响

以蛹虫草作为富集硒的载体，用不同浓度的含硒培养基分别对蛹虫草的子实体进行培养，以研究蛹虫草的耐硒能力．结果表明：采用固体培养基培养蛹虫草子实体，在含硒0．5—20mg／kg的固体培养基上，菌丝均能生长；在含硒0．5—5．0mg／kg范围内，子实体生长速度较其他浓度明显提高；在含硒10．0—20．0mg／kg范围内，子实体生长受到抑制；在含硒30mg／kg以上的培养基上，菌丝不能生长。     

不同蔬菜应选用不同叶面肥

叶菜类蔬菜：叶面追肥以尿素为主，喷施浓度0．3％至0．5％，每亩喷洒75千克至100千克，全生育期共喷2至3次；也可喷施0．3％米醋溶液，每亩喷50千克左右。     

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.     

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.     

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     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has