6个藜麦品种(系)农艺性状的主成分分析

为了解与藜麦产量相关的表型性状,进而为高产藜麦的选育提供理论依据,以HX1,HX2,NKY-S4,青藜2号、陇藜1号和青藜1号6个藜麦品种(系)作为供试材料,每个品种(系)挑选100个单株进行农艺性状考察,并运用SPSS进行相关性分析和主成分分析。结果表明:相关性分析发现单株产量与株高、茎秆长、有效穗数和千粒重有正相关关系,与主穗直径、穗色、杆色和穗型有负相关关系;主成分分析提取了可反映原变量信息82.793%的2个主成分,并据此给6个藜麦品种(系)做了综合评价。本研究筛选出青藜2号在参与分析的7个农艺性状上综合表现较好。     

冀中北地区强筋小麦品种的筛选

为筛选适宜冀中北地区种植的强筋小麦品种,采用完全随机试验设计,在河北省保定市徐水区科研基地选用9个小麦品种进行比较试验,测定了不同小麦品种的叶面积指数、植株不同部位的干物质和氮素积累量、籽粒产量和蛋白质质量分数。结果表明,小麦籽粒产量最高的品种是农优3号,其次是中麦629和济麦229;农优3号和济麦229的叶面积指数分别为5.0和5.7,经济系数分别为0.49和0.45,穗数、穗粒数、千粒质量均衡发展;济麦229蛋白质质量分数最高,高达161.6 g·kg~(-1),籽粒氮素积累量位居第2,仅次于农优3号。综合考虑籽粒产量和蛋白质质量分数表现,在冀中北地区适宜推广种植的强筋小麦品种为济麦229和农优3号。     

超晚播节水栽培冬小麦品种花后光合与灌浆特性

 为探寻黑龙港地区超晚播节水栽培条件下冬小麦的适宜品种,采用大穗型（潍麦8号）、小穗型（衡水4399）和中间穗型（济麦22）3种不同类型品种连续3年进行大田试验,研究了不同穗型品种的花后光合特性和籽粒灌浆特征。结果表明,在超晚播栽培下,不同品种产量的差异主要是千粒重的差异;3个品种中济麦22千粒重和产量均最高,主要是由于灌浆持续期特别是活跃灌浆期较长、灌浆后期的灌浆速率较高所致。与潍麦8号和衡水4399比较,济麦22在灌浆后期不仅具有较高的光截获率,还具有较高的叶片光合活性,这是其灌浆期较长、后期灌浆速率较高的主要原因。因此,中间穗型品种济麦22是黑龙港地区超晚播节水高产栽培的适宜品种。     

玉米品种高产稳产的综合评价研究

为了有效筛选出适合新疆新源地区种植的具有优良果穗性状的高产稳产玉米品种,客观地评价不同品种的适应性,本研究以国内产量表现优良的20个高产品种为材料,以当地主要推广的品种登海8883(CK)为对照,采用最小显著差法,变异系数法,高稳系数法对玉米品种高产稳产适应性进行评价,将其穗部性状与产量做相关性分析,综合上述评价结果将品种进行聚类分析,明确适应性好的品种产量构成因素。结果显示:1)20个品种间产量存在显著差异,5个品种产量明显高于对照品种,登海218和迪卡517表现出较好的适应性和高产性;2)变异系数小的是银玉123、登海119和登海8883,高稳系数大的是登海218、迪卡(DK)517和陕单628,且和产量呈极显著正相关,标准差(S)、变异系数(CV)与高稳系数(HSC)成显著负相关;平均产量()、最小显著差法(LSD)、S、CV估测的产量稳定性综合评价品种与高稳系数法评价的结果一致;3)聚类分析结果显示,适应性较好的品种果穗的穗长、穗行数和百粒重性状优良,对玉米单株产量起决定作用。结论:结合果穗性状、各评价参数及产量聚类分析的结果,筛选出具有优良性状的高产稳产品种为登海218、DK517,其产量远超登海8883(CK)和其他玉米品种,高产性好,适合在新疆新源地区种植。     

秋播藜麦生长发育规律及观赏特性

藜麦因其丰富的遗传多样性和广泛的适应性而被世界各地引进种植,为探讨藜麦秋季种植及将其作为观赏植物开发利用的可行性,试验选取了Q1～Q13共13个材料进行秋播,通过对各材料生育进程、性状表现和单株产量的观察测定,研究秋播藜麦的生长发育规律和观赏特性。结果表明:秋播藜麦生育期较长,或不能成熟,各生育阶段中,灌浆至成熟所需时间最长;秋播藜麦植株较矮,茎细、分枝少,穗较短,单株产量较低,不同材料之间差异较大;藜麦观赏性则主要体现在株型、穗型和叶片、茎秆、穗的颜色上,多数材料在显穗至成熟期观赏特征明显,不同材料叶色、茎色、穗色差异较大。试验初步筛选出Q2、Q4和Q6具有较好的综合性状,可进一步扩大田间试验,为丰富藜麦种植模式及发展生态旅游观光农业提供一些参考。     

早熟高产燕麦新品种青燕1号选育报告

青燕1号是以青永久146为母本,巴燕3号为父本配置杂交组合,按照系谱法经多年选育,在海拔1745-3103m的不同地区能完成生育期,收获高产、优质的饲草.结果表明:青燕1号具早熟、丰产性高、适应性强、品质优良的特点;适宜在青藏高原海拔3000m以下水热条件较好的地区建立种子田;海拔3000m以上的高寒牧区种植饲草.     

藜麦与几种饲草在高寒荒漠地区的品种比较试验

为藜麦作为饲草在高寒地区的种植提供理论依据和技术支撑,本研究对藜麦和当地几种常见饲草的干草产量、叶茎比、营养特性和经济效益进行测定和分析,并采用灰色关联度分析法对各品种饲草的生产性能进行综合评价。结果表明:藜麦与几种饲草的干草产量、叶茎比、粗蛋白含量、蛋白质产量、中性洗涤纤维含量、酸性洗涤纤维含量和经济效益差异显著(P0. 05),其中藜麦的干草产量最高为28 510. 25 kg/hm~2,叶茎比最大(0. 63),粗蛋白含量为15. 83%。蛋白质产量最高为4 513. 17 kg/hm~2,经济效益最高为15 741. 52元/hm~2。中性洗涤纤维和酸性洗涤纤维的含量最低,分别为44. 17%和31. 18%。根据灰色关联度分析表明,综合评价排在第一的饲草品种为藜麦,其等权关联度为0. 975 8。藜麦的干草产量高、适口性好、营养价值高、经济效益好、综合表现最好,可以成为高寒地区饲草种植的优质品种。     

黑龙港麦区小麦品种设计及沧麦026选育

沧麦026新品种以临汾605为母本,CA837为父本有性杂交,经水旱两圃平行交替选择法培育而成.表现性状稳定,抗逆性强,适应性广,节水、丰产特点突出.在1999～2001年冀中北水地组区试及大区生产试验中.平均产量5 790 kg/hm2,比对照京冬8号增产6.1%,居参试品种第一位.大区生产试验平均产量6 135 kg/hm2.经省品审会审定通过,适宜河北省黑龙港麦区中高肥力水平麦田种植.     

全膜双垄沟种植对不同品种糯玉米产量的影响

籽粒产量和农艺性收是评价糯玉米品种的重要指标。在半干旱的平凉市进行了7个糯玉米品种多点筛选试验,通过测定成熟期株高、穗位高、穗长、穗瘟、千粒重和籽粒亩产量等指标,分析其在当地适应性和产量表现。与对照品种金糯1号相比,黄糯1号平均产量为9075kg／ha,在7个供试品种中居第一位,较对照增产33．9％,平均株高232．9cm,穗位高95．8cm,穗长21．6cm,千粒重270．6g．是适宜当地示范推广的高产籽粒型品种。     

适宜青海东部农区种植的甜荞品种筛选研究

为筛选出适宜青海东部农区种植的高产优质甜荞品种。选用7个甜荞麦品种作为供试材料,测定其农艺性状、产量和品质指标并进行对比分析,同时利用隶属函数法对其适应性进行综合评价。结果表明:当地品种"六桥1号"的产量最高达1 709.53 kg/hm~2,引进品种"香甜2号"的产量最低为557.17 kg/hm~2,经隶属函数综合评价,品质和产量表现较优的是"六桥1号"和引进品种"贵甜荞2号"。"贵甜荞2号"相比其他引进品种的品质和产量表现最佳,可在青海地区推广种植;"香甜2号"的品质和产量表现最差,但多个农艺性状优于其他品种,可为甜荞育种提供亲本材料。     

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