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Breeding strategies for increasing yield potential in super hybrid rice
Shihua CHENG,Xiaodeng ZHAN,Liyong CAO
《农业科学与工程前沿(英文)》 2015年 第2卷 第4期 页码 277-282 doi: 10.15302/J-FASE-2015081
陈温福,徐正进,张龙步,张文忠,杨守仁
《中国工程科学》 2002年 第4卷 第1期 页码 31-35
水稻单产经历了由矮化育种和杂交稻带来的两次飞跃以后,长时间停滞不前。研究表明,以籼粳稻亚种间强优势利用与理想株型相结合为主要特征的超高产育种(即超级稻),正孕育着单产水平的第3次突破。基本理论与技术路线是增加生物产量,优化产量结构,利用籼粳稻亚远缘杂交或地理远缘杂交创造新株型和强优势,通过优化性状组配使理想株型与优势相结合。按照这一理论与技术路线,已经成功地创造出一批新株型优异种质,并育成了单产12~13 t/hm2的超级稻。
杨仁崔
《中国工程科学》 2005年 第7卷 第8期 页码 26-30
发现水稻节间伸长的eui新基因及其高秆隐性种质的多型性,育成长穗颈的雄性不育系,组配成e(eui)-杂交稻,并已进入生产应用。e-杂交稻研究和发展的目标是:减少杂交稻种子生产中50%~90%的赤霉素用量,并提高种子产量和质量;杂交稻增产,同时减少杂交稻种植的氮肥用量。已克隆分离出EUI1,EUI2基因,并获得该突变基因碱基缺失多样性的材料,将为植物生长发育,GA代谢激素与杂种优势,以及基因突变的分子机理和植物基因工程的研究提供材料和机遇。
Characterization of grain cadmium concentration in indica hybrid rice
Kai WANG, Qunfeng ZHOU, Tianze YAN, Shilong XU, Longyi ZHAO, Weicheng WANG, Zhigang JIN, Peng QIN, Chenjian FU, Liangbi CHEN, Yuanzhu YANG
《农业科学与工程前沿(英文)》 2020年 第7卷 第4期 页码 523-529 doi: 10.15302/J-FASE-2019281
As a consequence of contamination of soil with heavy metals, cadmium accumulation in grain is of great concern worldwide, but especially in southern China. It is important to evaluate the Cd accumulation potential of grain before or when examining and approving new cultivars. An evaluation method and criteria for verifying Cd accumulation potential in rice are proposed, and the Cd accumulation potential of 56 mid-season hybrids collected from the provincial cultivar trials in 2016 were investigated. Genotype, environment and their interactions strongly affected the variation in grain Cd accumulation. Two hybrids were identified as slightly Cd accumulating. Hybrids with slight Cd accumulation potential would be suitable for safe grain production on polluted land (total Cd under 2.0 mg·kg ) in Hunan Province (China) and should be considered for new cultivar evaluation and approval. This evaluation method and criterion could be applied for certifying Cd accumulation potential of rice cultivars.
Effects of nano-silicon and common silicon on lead uptake and translocation in two rice cultivars
Jianguo LIU,Hui CAI,Congcong MEI,Mingxin WANG
《环境科学与工程前沿(英文)》 2015年 第9卷 第5期 页码 905-911 doi: 10.1007/s11783-015-0786-x
关键词: silicon (Si) lead (Pb) rice (Oryza sativa L.) toxicity accumulation
Direct ethanol production from rice straw by coculture with two high-performing fungi
Maki TAKANO, Kazuhiro HOSHINO
《化学科学与工程前沿(英文)》 2012年 第6卷 第2期 页码 139-145 doi: 10.1007/s11705-012-1281-6
关键词:
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1431-5
•Direct seeding (DS) method led to more distributed Cd in aerial parts of rice.
关键词: Cadmium Genotypes Growth stages Micro X-ray fluorescence Planting mode
茆智
《中国工程科学》 2002年 第4卷 第7期 页码 8-16
水稻是中国最主要的粮食作物之一,其产量约占粮食作物总产量的40%;在全国约11×108hm2的粮食作物总面积中,稻田面积约占28%。20世纪80年代以来,水稻产区的水资源短缺已成为当地农业生产中的重要问题,各地试验、开发、应用与推广了许多种水稻节水灌溉模式。文章根据这些新的水稻灌溉模式试验结果与推广经验,将我国水稻节水灌溉主要模式归纳为浅、湿、晒结合,间歇淹水,半旱栽培和蓄雨型等4类。阐述了这些模式的田间水分控制标准以及节水、增产和提高水分生产率的潜力;提出了该4类模式的选择原则以及应用这些模式时应注意的问题;分析、讨论了推广这些模式能够持续节水与提高水分生产率的机理以及对环境的影响。
Tool wear mechanisms in the machining of Nickel based super-alloys: A review
Waseem AKHTAR,Jianfei SUN,Pengfei SUN,Wuyi CHEN,Zawar SALEEM
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 106-119 doi: 10.1007/s11465-014-0301-2
Nickel based super-alloys are widely employed in aircraft engines and gas turbines due to their high temperature strength, corrosion resistance and, excellent thermal fatigue properties. Conversely, these alloys are very difficult to machine and cause rapid wear of the cutting tool, frequent tool changes are thus required resulting in low economy of the machining process. This study provides a detailed review of the tool wear mechanism in the machining of nickel based super-alloys. Typical tool wear mechanisms found by different researchers are analyzed in order to find out the most prevalent wear mechanism affecting the tool life. The review of existing works has revealed interesting findings about the tool wear mechanisms in the machining of these alloys. Adhesion wear is found to be the main phenomenon leading to the cutting tool wear in this study.
Sulige Gas Field super project
Wenrui HU, Jingwei BAO, Pengcheng JI
《工程管理前沿(英文)》 2017年 第4卷 第3期 页码 379-384 doi: 10.15302/J-FEM-2017107
马达文,钱静,刘家寿,桂建芳
《中国工程科学》 2016年 第18卷 第3期 页码 96-100 doi: 10.15302/J-SSCAE-2016.03.016
稻田养鱼是一种传统的综合养鱼方式。近几年来,一批以特种经济品种为主导的稻渔综合种养新模式不断涌现,在经济、社会、生态等方面取得显著的成效。为了推广稻渔综合种养的经验,本文实地调研了湖北省两种典型的稻渔综合种养模式,其中“虾–稻共作”模式亩均纯收入超过3 000元,亩纯收入则是单纯种粮的3~4倍;“鳖–虾–鱼–稻共作”模式亩均纯收入近万元,是单一种植水稻亩均效益的12.8倍。本文还提出了加快产业发展的建议,包括进一步拓展种养殖空间、促进产业融合发展及加大政策扶持力度等。
标题 作者 时间 类型 操作
Breeding strategies for increasing yield potential in super hybrid rice
Shihua CHENG,Xiaodeng ZHAN,Liyong CAO
期刊论文
Characterization of grain cadmium concentration in indica hybrid rice
Kai WANG, Qunfeng ZHOU, Tianze YAN, Shilong XU, Longyi ZHAO, Weicheng WANG, Zhigang JIN, Peng QIN, Chenjian FU, Liangbi CHEN, Yuanzhu YANG
期刊论文
杂交水稻(中文)
2022年12月07日
会议视频
杂交水稻(英文)
2022年12月10日
会议视频
Effects of nano-silicon and common silicon on lead uptake and translocation in two rice cultivars
Jianguo LIU,Hui CAI,Congcong MEI,Mingxin WANG
期刊论文
Direct ethanol production from rice straw by coculture with two high-performing fungi
Maki TAKANO, Kazuhiro HOSHINO
期刊论文
The implications of planting mode on cadmium uptake and remobilization in rice: Field experiments across
期刊论文
Tool wear mechanisms in the machining of Nickel based super-alloys: A review
Waseem AKHTAR,Jianfei SUN,Pengfei SUN,Wuyi CHEN,Zawar SALEEM
期刊论文