检索结果-南通市图书馆

大豆优异种质北丰11资源特点及育种上的利用

在线全文

学校读者我要写书评

暂无评论

耕作与栽培 2021年第6期41卷 84-90页

作者：郭美玲郭泰王志新郑伟李灿东赵海红徐杰飞赵星棋黑龙江省农业科学院哈尔滨150086 黑龙江省农业科学院佳木斯分院/国家大豆区域技术创新中心/国家大豆产业技术体系佳木斯综合试验站黑龙江佳木斯154007

优异种质资源北丰11是以合丰25为母本,与北69-1483为父本经有性杂交育成,已在大豆生产和品种改良中广泛应用。该种质资源亲本系谱树含有金元、四粒黄、白眉、克山四粒荚、小粒豆9号和大白眉等6个国内核心祖先亲本,十胜长叶(日本品种)1... 详细信息

优异种质资源北丰11是以合丰25为母本,与北69-1483为父本经有性杂交育成,已在大豆生产和品种改良中广泛应用。该种质资源亲本系谱树含有金元、四粒黄、白眉、克山四粒荚、小粒豆9号和大白眉等6个国内核心祖先亲本,十胜长叶(日本品种)1个国外核心祖先亲本,元宝金、满仓金、合丰23、合丰25、丰收6号、丰收10、克4430-20、北69-1483等一批直接亲本,拓宽了血缘关系,聚合与累加了优良基因与性状;作为品种利用,在黑龙江省年最大推广面积为24.7万hm^(2)(1997年),1995—2010年6年累计推广面积106.7万hm^(2);作为优异种质资源育种利用,直接做育种亲本(一级利用)育成大豆新品种37个,从黑龙江省第二积温带至第六积温带均有育成品种,类型包括高产、高蛋白、高油、抗灰斑病(SCSH)和特用(菜用大豆)等品种,已在生产上大面积推广应用。该种质为黑龙江省及相临省区大豆生产和品种改良做出了重要贡献。

关键词：大豆优异种质北丰11 资源特点育种利用

大豆杂交育种组合规模与品种选育概率及亲本选用研究

在线全文

学校读者我要写书评

暂无评论

黑龙江农业科学 2024年第4期 1-10页

作者：郭泰郭美玲李灿东王志新郑伟徐杰飞赵星棋王象然黑龙江省农业科学院佳木斯分院/国家大豆区域技术创新中心/国家大豆产业技术体系佳木斯综合试验站/三江平原主要作物育种栽培重点实验室黑龙江佳木斯154007 黑龙江省农业科学院黑龙江哈尔滨150086

为指导当前与今后的大豆杂交育种工作,以黑龙江省农业科学院佳木斯分院1952-2013年间杂交育种选用的有效亲本和配制的杂交组合及选育的新品种为研究对象,对116个有效亲本和5610个杂交组合及110个品种进行深入系统地研究与分析。结果表明... 详细信息

为指导当前与今后的大豆杂交育种工作,以黑龙江省农业科学院佳木斯分院1952-2013年间杂交育种选用的有效亲本和配制的杂交组合及选育的新品种为研究对象,对116个有效亲本和5610个杂交组合及110个品种进行深入系统地研究与分析。结果表明,杂交组合配制规模以每年150~200个为宜,选育品种概率为1.96%;亲本选择要依据育种理论、育种目标和遗传背景;亲本选用原则要坚持高起点、要考虑亲本血缘关系与遗传基础、亲本配合力(一般配合力和特殊配合力)及目标性状遗传特点;亲本使用要确定核心亲本(骨干亲本)与改良亲本,要采用梯级杂交、连续改造或回交转育、定向改良或一母多父,集中围攻或采用多亲本杂交聚合育种。

关键词：大豆杂交育种组合规模品种选育概率亲本选用

高油高产、多抗、广适性大豆品种‘合农85’选育研究

在线全文

学校读者我要写书评

暂无评论

农学学报 2021年第5期11卷 5-12页

作者：郭美玲郭泰王志新郑伟李灿东赵海红张振宇刘忠堂黑龙江省农业科学院哈尔滨150086 黑龙江省农业科学院佳木斯分院/国家大豆区域技术创新中心/国家大豆产业技术体系佳木斯综合试验站黑龙江佳木斯154007

为了选育高油高产、多抗、广适性的大豆品种,采用分子设计与杂交育种结合的方法育成了大豆新品种‘合农85’,2017、2018年分别由黑龙江省和国家审定推广。该品种百粒重22~25 g,油分含量22.60%,蛋白质含量38.40%;中抗SCSH和SMVⅠ号株系,... 详细信息

为了选育高油高产、多抗、广适性的大豆品种,采用分子设计与杂交育种结合的方法育成了大豆新品种‘合农85’,2017、2018年分别由黑龙江省和国家审定推广。该品种百粒重22~25 g,油分含量22.60%,蛋白质含量38.40%;中抗SCSH和SMVⅠ号株系,抗Phytophthora sojae;在北方春大豆区属中早熟品种;省级品种试验,区域试验平均产量3020.8 kg/hm^(2),较对照‘合丰55(合交02-69)’增产12.6%,生产试验平均产量2864.6 kg/hm^(2),较对照‘合丰55(合交02-69)’增产12.0%;国家品种试验,区域试验平均产量3087.0 kg/hm^(2),较对照平均值A和‘合交02-69’平均增产9.3%,生产试验平均产量3187.5 kg/hm^(2),较对照‘合交02-69’增产8.1%。结果表明,该品种的选育不仅为油用大豆生产提供了新品种,同时也为高油大豆育种及资源利用探索了路径与方法。

关键词：高油高产多抗广适性大豆品种‘合农85’ 选育研究

Preparation and Superconducting Properties of F-doped SmO_(1-x)F_xFeAs

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2011年第3期27卷 227-232页

作者： Zhiyong Liu Hongli Suo Lin Ma Min Liu Zhiping Wu Zhichao guo Luping Han meiling Zhou Key Laboratory of Advanced Functional Materials Ministry of Education College of Materials Science and Engineering Beijing University of Technology Beijing 100022 China

Here we report the fabrication and superconductivity of the iron-based arsenic oxide SmO1-xFxFeAs compound. X-ray diffraction （XRD） results prove that the lattice parameters a and c decrease systematically with increasing x in between 0〈x≤0.35, but when x〉0.35 the a and c increase with the decrease of x in the SmO1-xFxFeAs. The critical temperature （To） increases with increasing x in between 0.15≤x≤0.3, while x〉0.3 the Tc decreases with the increase ofx. It is found that at x=0.3 SmO0.7F0.3FeAs has the highest onset resistivity transition temperature of 55.5 K. The critical current density （Jc） value at 10 K for the obtained ***0.3FeAs is 1.3×10^5 A/cm^2 （0 T）. Meanwhile one can estimates Hc2（0） from the slope of the Hc2（T） curve at T=-Tc （Hc2 is the upper critical field）, and for the 90% normal-state resistivity （Pn） criterion （Tc=55 K）, Hc2（0） is determined to be -253 T.

关键词： SmO1-xFxFeAs compound F-doped Superconductivity

Vacuum carburization of 12Cr2Ni4A low carbon alloy steel with lanthanum and cerium ion implantation

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2017年第11期35卷 1164-1170页

作者： meiling Dong Xiufang Cui Yuhui Zhang guo Jin Caiwen Yue Xin Zhao Zhaobing Cai Binshi Xu Institute of Surface/Interface Science and Technology Key Laboratory of Superlight Material and Surface Technology of Ministry of Education HarbinEngineering University Harbin 150001 China College of Materials Science and Chemical Engineering Harbin Engineering University Harbin 150001 China Dongan Engine Group Harbin 150060 China

As bearing parts, 12 Cr2 Ni4 A is expected to have high hardness and excellent fatigue strength, so carburizing is employed to improve the inherit properties of 12 Cr2 Ni4 A. However, the traditional carburizing is limited by poor microstructure distribution and low rate of carburizing. The rare earth ion implantation is known to help improving the properties of tribology, corrosion resistance and oxidation resistance of metal. In this article, the RE implantation is employed to assist the carburizing. Lanthanum and cerium ion implantations are initially used to assist 12 Cr2 Ni4 A low pressure vacuum *** microstructure, content of retained austenite, hardness, thickness of layer and carbon diffusion were analyzed by optical microscopy(OM), scanning electron microscopy(SEM), X-ray diffraction(XRD) and Rockwell/Vickers hardness tester, respectively. It was shown that lanthanum and cerium implantations can improve structure of the vacuum carburizing layer, and enhance the uniformity of carbon element distribution on the carburized surface. Meanwhile the RE implantation plays a positive role in promoting the surface hardness and carburized rate. The lanthanum element has more significant effect on surface hardness and content of retained austenite than cerium element. The surface hardness of lanthanum element implanted layer was 62.9 HRC with 9.6% content of retained austenite, while the carburizing rate of cerium implanted layer increased by 12.4%.

关键词： Vacuum carburization Ion implantation Lanthanum Cerium Diffusion

Microstructure Characteristics and Elevated Temperature Mechanical Properties of a B Containedβ-solidifiedγ-TiAl Alloy

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 738-746页

作者：王秀琦 guo Ruiqi 刘国怀 LI Tianrui YANG Yuxuan CHEN Yang XIN meiling WANG Zhaodong State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China School of Materials Science and Engineering Harbin Institute of Technology at ShenzhenShenzhen 518055China School of Metallurgical Engineering Anhui University of TechnologyMaanshan 243000China

The improved microstructure and enhanced elevated temperature mechanical properties of Ti-44Al-5Nb-(Mo,V,B)alloys were obtained by vacuum arc re-melting(VAR)and primary annealing heat treatment(HT)of 1260℃/6 h/Furnace cooling(FC).The phase transformation,microstructure evolution and tensile properties for as-cast and HTed alloys were *** indicate that three main phase transformation points are determined,T_(eut)=1164.3℃,T_(γsolv)=1268.3℃and T_(βtrans)=1382.8℃.There are coarse lamellar colonies(300μm in length)and neighbor reticular B2 andγgrain(3-5μm)in as-cast alloy,while lamellar colonies are markedly refined and multi-oriented(20-50μm)as well as the volume fraction and grain sizes of equiaxedγand B2 phases(about 15μm)significantly increase in as-HTed *** transformations involvingα+γ→α+γ+β/B2 and discontinuousγcoarsening contribute to the above ***(1-3μm)act as nucleation sites forβ_(eutectic) and produce massiveβgrains with different orientations,thus effectively refining the lamellar colonies and forming homogeneous multi-phase *** curves show both the alloys exhibit suitable performance at 800℃.As-cast alloy shows a higher ultimate tensile stress of 647 MPa,while a better total elongation of more than 41%is obtained for as-HTed *** mechanical properties improvement is mainly attributed to fine,multi-oriented lamellar colonies,coordinated deformation of homogeneous multi-phase microstructure and borides within lamellar interface preventing crack propagation.

关键词： TiAl alloy phase transformation heat treatment boride microstructure mechanical properties

Effect of trace Ce and B additions on the microstructure of Nb-3Si-22Ti alloys

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2017年第3期27卷 362-368页

作者： meiling Wu Liwu Jiang Shiyu Qu Fengwei guo Ming Li Yongwang Kang Yafang Han Science & Technology on Advanced High Temperature Structural Materials Laboratory AECC Beijing Institute of Aeronautical Materials National Center for Materials Service Safety University of Science and Technology Beijing

The effects of trace Ce and B additions on the microstructure Nb-22Ti-3Si alloys were *** microstructure of the alloys was observed by scanning electron microscope（SEM）,and their phase compositions were analyzed with X-ray diffraction（XRD） and Electro-Probe micro-analyzer（EPMA）.The distributions of the elements were detected by Spectrum *** interface of the phases in the alloys was investigated by transmission electron microscopy（TEM）.The results indicated that two phases of Nbss and Nb;Si presented in Nb-22Ti-3Si,Nb-22Ti-3Si-0.2Ce and Nb-22Ti-3Si-0.2B *** segregation of Ti at the interface between Nbss and Nb;Si was promoted and the volume fraction of silicides in the alloy increased with the trace B and Ce addition to the Nb-22Ti-3Si alloy *** there was no single and definite orientation relationship between Nb;Si and Nbss in Nb-22Ti-3Si,Nb-22Ti-3Si-0.2Ce and Nb-22Ti-3Si-0.2B *** with the Nb-22Ti-3Si alloy,the Nbss superlattice structure was found in Nb-22Ti-3Si-0.2Ce and Nb-22Ti-3Si-0.2B alloys.

关键词： Nb-3Si-22Ti alloy Nb3Si Ce B Microstructure Phase interface Superlattice

食用大豆新品种‘合农78’的选育与育种体会

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

农学学报 2021年第11期11卷 6-10页

作者：郭美玲郭泰王志新郑伟李灿东赵海红张振宇徐杰飞黑龙江省农业科学院哈尔滨150086 黑龙江省农业科学院佳木斯分院/国家大豆区域技术创新中心/国家大豆产业技术体系佳木斯综合试验站黑龙江佳木斯154007

为了选育食用大豆品种,采用简单回交与分子设计育种结合的方法,以‘黑农43’为母本,与(‘黑农54’×‘黑农43’)F1为父本,育成了既高蛋白又高产的新品种‘合农78’,2019年由黑龙江省审定推广。该品种百粒重22~23 g,蛋白质含量41.75%,油... 详细信息

为了选育食用大豆品种,采用简单回交与分子设计育种结合的方法,以‘黑农43’为母本,与(‘黑农54’×‘黑农43’)F1为父本,育成了既高蛋白又高产的新品种‘合农78’,2019年由黑龙江省审定推广。该品种百粒重22~23 g,蛋白质含量41.75%,油分含量20.42%;区域试验平均产量2726.8 kg/hm^(2),较对照品种‘绥农26’增产9.6%,生产试验平均产量3009.1 kg/hm^(2),较对照品种‘绥农26’增产11.5%;中抗SCSH,抗SMVⅠ号株系;生育日数120天,需≥10℃活动积温2450℃,适宜黑龙江省第二积温带及省外相同条件的地区种植;以该品种为核心,集成了高产与提质保优栽培技术。该品种的育成解决了发展食用大豆生产的瓶颈问题,同时也为食用大豆品种选育提供了方法与经验。

关键词：食用大豆新品种 ‘合农78’ 选育育种体会

Effects of grain boundary ternary alloy doping on corrosion resistance of(Ce,Pr,Nd)-Fe-B permanent magnets

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2021年第8期39卷 979-985页

作者： Xin Wang Minggang Zhu Feng Xi meiling Zhang Fei Liu Yingjian guo Lele Zhang Guangrui Zhang Wei Li Division of Functional Materials Central Iron&Steel Research InstituteBeijing 100081China School of Science Inner Mongolia University of Science&TechnologyBaotou 014010China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

To satisfy the application of different environments,grain boundary doping is commonly used in the preparation of sintered magnets to improve the coercivity and the corrosion *** this paper,the alloys were prepared by mixing different ratios of the master alloy(Ce,Pr,Nd)-Fe-B and the sintering aid(Pr,Nd)-*** coercivity of sintered(Ce,Pr,Nd)-Fe-B magnet is substantially enhanced by doping 2 wt%of(Pr,Nd)-Al,while the maximum energy product decreases *** systematically investigated the corrosion behavior and micro structure of the sintered magnets in order to determine the mechanism of the *** sintered(Ce,Pr,Nd)-Fe-B magnets with 2 wt% of(Pr,Nd)-Al addition exhibit the decreasing corrosion rate compared with others,due to the distribution of intergranular *** electrode potential difference between the main phase and the RE-rich phase is reduced by the addition of Al,improving the potential and stability of RE-rich phase due to the higher electrode potential of Al than that of Nd,Pr or *** addition,the element distribution of the magnets doped by(Pr,Nd)-Al indicates that the Al-rich shell formed at the marginal area of the Ce-rich phase improves its *** re,intergranular adding te rnary(Pr,Nd)-Al alloy powders results in both high coe rcivity and good corrosion resistance synchronously.

关键词： Grain boundary doping Sintered(Ce,Pr,Nd)-Fe-B magnets (Pr,Nd)-Al Magnetic properties Corrosion resistance Rare earths