不同激素和基质对北美香柏扦插成活率的影响研究

为了提高北美香柏在沈阳地区的扦插成活率,试验以北美香柏一、二年生的插穗为试材,分别采用不同浓度的IBA、NAA及ABT生根粉浸泡插穗,以清水作对照,并分别在河沙、草炭、炉渣、园土等基质上进行扦插试验.试验表明,在沈阳地区气候条件下,以ABT生根粉100 mg/L浸插穗12 h效果最佳,生根率达到79.1%,而且根系发育良好;一年生插穗比二年生插穗生根率高2.7%;草炭插壤比园土插壤生根率高8.0%.秋季起苗,沙藏越冬,草炭土扦插苗翌年移植成活率高达89.2%,当年新梢生长量4.5 cm.     

天女木兰硬枝扦插繁殖初步研究

运用正交试验方法,对天女木兰进行硬枝扦插繁殖试验,结果表明,插穗类型是影响扦插生根的主要因素,扦插基质次之.最佳的组合结果:2 a生枝条作插穗、V(珍珠岩)∶V(草炭土)=1∶1为基质、200 mg/L ABT1生根粉浸根4 h.这种组合生根率达46.7%,生根效果最好.     

不同基质、生长调节剂及部位对米槁扦插生根的影响

如今米槁种群数量小,为增加及开发米槁资源,以米槁枝条为材料,开展了不同基质(蛭石、珍珠岩、河沙、珍珠岩∶河沙=1∶1)、不同部位(上部、中部、下部、不同种类(IBA、ABT-1、GGR-6)不同浓度的激素处理对米槁扦插生根影响的实验.扦插试验表明:珍珠岩基质中插穗生根率为65.56%,是米槁插穗扦插生根的最佳基质.植物生长调节剂种类和浓度对插穗生根作用显著,30mg/L的GGR-6浸泡4h的米槁插穗生根效果最好,生根率达到63.33%.米槁插穗生根效果由高到低依次为枝条的下部、中部、上部.     

李砧木硬枝扦插繁育技术研究

以Mirabolano29C硬枝为扦插材料,采用正交和完全随机试验方法,研究基质、生长调节剂种类和生长调节剂处理方式等对硬枝插穗生根的影响。结果表明:将插穗基部放在质量浓度为100 mg/L的IBA溶液中浸泡6 h,扦插于珍珠岩基质中,生根率高达84.62%,平均生根条数为10.87,平均根长达3.84 cm;将插穗基部放在质量浓度为1 000 mg/L的IBA溶液中蘸30 s,扦插于珍珠岩基质中,生根率高达89.1%。     

药用植物母猪果扦插生根能力的研究

采用不同的扦插基质、不同浓度的激素处理母猪果插穗,研究不同的扦插基质、激素处理、扦插时间及插穗部位对母猪果插穗生根效果的影响.结果表明:影响母猪果插穗生根的主导因素是扦插基质,其次是激素种类;扦插基质以珍珠岩与泥炭的混合基质插穗生根效果最好(珍珠岩与泥炭体积比3∶2);激素则以IBA最佳,处理方法为IBA(100 mg/kg)处理3 h;选用基部插穗不仅生根率高,而且根系发达粗壮;母猪果的最佳扦插时间是12月.     

饲料型四倍体刺槐嫩枝扦插繁育技术

饲料型四倍体刺槐嫩枝扦插育苗的成活率受很多因素的影响。通过试验研究表明,在以珍珠岩和蛭石(2:1)为混合扦插基质,用NAA、IBA、IAA处理插穗时,以NAA100mg/L,IBA500mg/L,的浓度成活率较高,扦插后,加强扦插苗的基质含水量、空气湿度、光照、温度、病害和施肥管理,可以进一步促进插穗的生根和生长。     

不同基质对香石竹扦插生根的影响

为了研究不同基质对香石竹扦插生根的影响,以香石竹品种火焰、兰贵人和云之碟为供试材料,采用5种不同基质对香石竹插穗进行扦插生根试验。结果表明:3个品种在不同基质中生根率、根长、根数和根幅存在显著差异,基质3和基质2处理均对云之蝶和火焰的生根率、生根数、根幅和根长的效果最好;基质2处理对兰贵人生根率、生根数、根幅和根长的效果最好。40%草炭+40%珍珠岩+20%河砂和60%草炭+20%珍珠岩+20%河砂为云之蝶和火焰扦插苗的优选基质;60%草炭+20%珍珠岩+20%河砂为兰贵人扦插苗的优选基质。     

基质配比对美国紫薇“红火箭”扦插繁殖的影响

通过3种基质配比进行美国紫薇“红火箭”扦插繁殖比较试验,结果表明：以田园土、珍珠岩、泥炭（体积比为8∶1∶1）配制的基质进行扦插繁殖,10个月后的种苗成活率和株高生长量为88．7％和105．81 cm ,明显好于以营养土、蛭石、珍珠岩（体积比为7∶1．5∶1．5）配制的基质和用营养土、田园土、珍珠岩（体积比4∶5∶1）配制的基质,后2种基质配比对扦插繁殖的影响无明显差异;3种基质配比对扦插苗的地径生长无明显影响。这表明,采用3种基质配比进行美国紫薇“红火箭”扦插繁殖,用田园土、珍珠岩、泥炭配制的基质效果最佳。     

水曲柳嫩枝扦插育苗技术试验研究

水曲柳嫩枝扦插育苗的成活率受很多因素的影响。研究结果表明,在以蛭石或蛭石和珍珠岩混合物(1:1)为扦插基质,用IAA、IBA、NAA处理插穗时,以IBA60mg/L,NAA30mg/L及接近浓度,处理时间以短时速蘸成活率较高,扦插时期以5月下旬到6月中旬为较理想时间,采穗母株年龄越小,插穗越容易成活,随年龄的增大,成活率下降。扦插后,加强扦插苗的水分、光照、温度、病害和施肥管理,可以进一步促进插穗生根和生长。     

掌叶木扦插繁殖研究

通过研究不同成熟度插穗、不同基质、不同生根剂、不同浓度水平等方面对掌叶木扦插效果的影响。结果表明:半木质化成熟稍比抽新稍嫩枝更适宜作插穗;双吉尔-GGR扦插效果优于IBA,GGR浓度在50mg/L时效果较好,两种基质扦插后平均插穗保存率和生根率分别达到81.25%和75.00%;扦插基质为珍珠岩优于腐殖土和蛭石,在此基质中,插穗保存率和生根率均达到87.50%。     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

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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