冬牧70黑麦在天津地区的产量与播量试验初报

报道了１９９５～１９９７年对冬牧７０黑麦连续两季利用冬闲田进行不同培养种量大田种试验研究的结果，试验结果表明，冬牧７０黑麦最佳播种量是（５～７．５）ｋｇ／６６６．７ｍ＾２，首次刈割鲜重产量达２０００ｋｇ／６６６．７ｍ＾２左右，干重产量达８００ｋｇ／６６６．７ｍ＾２左右。     

冬牧70黑麦在天津地区的产量与播量试验初报

报道了１９９５～１９９７年对冬牧７０黑麦连续两季利用冬闲田进行不同播种量大田种植试验研究的结果．试验结果表明：冬牧７０黑麦最佳播种量是（５～７．５）ｋｇ／６６６．７ｍ２．首次刈割鲜重产量达２０００ｋｇ／６６６．７ｍ２左右，干重产量达８００ｋｇ／６６６．７ｍ２左右     

79645大豆在西宁地区种植密度探讨

７９６４５大豆是高度自我调节的群体。在西安地区生态条件下，其适宜种植密度范围较大，不同种植密度差异为１．８１￣４．２５万株／６６７ｍ＾２，但密度不同，大豆植株经济性状也不同，本试验结果表明，７９６４５大豆每亩种植密度以１．８１￣２．８８万株的群体结构较为适宜，平均产量达１１２．８ｋｇ／６６７ｍ＾２。     

厚皮甜瓜新品种甘蜜1号栽培技术

甘蜜１号是兰州市农科所选育的杂交一代厚皮甜瓜，肉质酥脆，清香爽口，折光糖含量１４％￣１６％，单瓜重２ｋｇ。每６６６．７ｍ＾２产２０００￣２５００ｋｇ。栽培方式为砂田和水旱塘栽培，砂田栽培为宽窄行种植，水旱塘栽培为双、单蔓整枝。     

玉米新品种绵单四号高产栽培技术研究

采用五因素二次回归正交旋转组合设计,建立了玉米绵羊四号产量（Ｙ）与密度（Ｘ１）,施氮量（Ｘ２）,施磷量（Ｘ３）,施钾量（Ｘ４）,施锌量（Ｘ５）的数学模型。经因子水平选优,得了产量在６７５０ｋｇ／ｈｍ＾３以上的栽培模式为：密度４１５５０￣４２６７５株／ｈｍ＾２,施纯氮２１６￣２２６．５ｋｇ／ｈｍ＾２,施用Ｐ２Ｏ５为６１．５￣６９ｋｇ／ｈｍ＾２,施用Ｋ２Ｏ为６４．５￣７２ｋｇ／ｈｍ＾２,施用ＺｎＯ为２     

陕南水镁石纤维（FB）的物理性质研究

水镁石纤维是天然产出的、罕见的高镁实心纤维。其抗拉强度为９５×９．８１×１０￣６Ｐａ，弹性模量为１．５～２．０×９．８×１０￣９ｐａ，显微硬度为７０～２４０，密度为２．４４～２．４８ｇ／ｃｍ￣３。电阻率为３×１０￣５Ω．ｍ～６．１×１０￣７Ω．ｍ，介电常数为４．７～７．２，磁化系数为１１．５～１５．５ｃｍ￣３／ｇ。耐热区间为４５０～４８０℃，导热系数为０．１３１ｗ／ｍ·ｋ，热膨胀系数为５．７～８．８×１０￣（－７）ｍ／℃，热容为１．２６Ｉ／ｇ，热解焓为１９．６ＫＪ／ｍｏｌ。Ｎｅ＝１．５７５～１．５７７，Ｎｏ＝１．５５２～１．５５６，白度７３．５％。本文还讨论了上述物理性质的各种变化、影响因素及其应用。     

美国燕麦在成都地区生育状况与结实性能试验研究

１９９３～１９９５年，通过研究植株经济性状及其相关关系，探讨高寒作物——美国燕麦（ＡｍｅｒｉｃａｎＯａｔｓ）在成都北亚热带地区的生存适应、牧草产量与结实性能．结果表明：美国燕麦基本能适应高温、高湿、少日照的生态条件并正常生长繁殖．各因素中单丛小穗数与产量相关关系极显著（ｒ＝０．９７６５，Ｐ＜０．０１），分蘖数与产量相关关系同样显著．植株日生长量平均０．８１４５ｃｍ．三年中，植株平均分蘖１０．２株～１１株，牧草干重分别达７３４５．３ｋｇ／ｈｍ２、６７３６ｋｇ／ｈｍ２和６３９５ｋｇ／ｈｍ，种子净干重分别达１３９３．３ｋｇ／ｈｍ２、１１５７．２ｋｇ／ｈｍ２和１１３６．６ｋｇ／ｈｍ２．     

上蔡县杂交优质油菜配套栽培技术试验研究：1997—1998年

两年来，通过对５个杂交油菜品种密度，硼肥三个对比试验，结果表明，华杂３号表现最好，适宜本地区种植；油种植密度以７．５万穴＊２株／公顷产量最高，每公顷施硼肥以７．５－１５ｋｇ效果最好。     

上蔡县杂交优质油菜配套栽培技术试验研究(1997—1998年)

两年来，通过对５个杂交油菜品种密度，硼肥三个对比试验，结果表明，华杂３号表现最好，适宜本地区种植；油菜种植密度以７．５万穴×２株／公顷（１５万株）产量最高，每公顷施硼肥以７．５—１５ｋｇ效果最好。     

药用红花栽培技术研究

对药用红花进行了栽培技术的研究．结果表明，“川红一号”干花产量达２５５～２８９５ｋｇ／ｈｍ２的适宜播期为１０月底，密度为１２００００～１８００００株／ｈｍ２．施肥量为：Ｎ３７５～７５０ｋｇ／ｈｍ２，Ｐ２Ｏ５１５０ｋｇ／ｈｍ２．播种前使用钼酸铵、硼酸和生长调节剂浸种，对增加药用红花干花产量有一定作用．     

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.     

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