浅谈甜菜新品种推广应用之我见

近几年新疆甜菜生产迅猛发展,这与甜菜品种的不断更替,新品种的应用有着密切的关系.     

大豆品种比较试验及引种研究初报

通过几年的引种和试验，为略阳大豆生产筛选了一批高产新品种，在生产上推广种植，取得了显著的效益。并根据引种试验和品种表现，初步总结出了略阳县大豆品种的引种规律，对大豆新品种引进和生产发展具有一定的指导意义。     

多倍体甜菜新品种“中甜——双丰309”

甜菜多倍体品种是近年来国内外甜菜品种的主流。在我国东北、华北、宁夏、新疆等甜菜产区已大规模应用,取得了巨大的经济效益。张掖地区农科所引进甜菜多倍体品种“中甜——双丰309”,1990—1993年累计推广种植12.8万亩,占四年全区甜菜种植面积的35.5％,平均块根亩产量4240公斤,含糖率19.6％,比对照品种甘糖一号增产3.3％,提高含糖2.01度,亩产糖量853公斤,比对照提高12.7％。该品种由轻工部甜菜糖业研究所培育,具有加工品质优良,稳定性好、抗褐斑病、耐根病的特点,充分表现了多倍体甜菜品种丰产优质、抗逆性强的优势,1993年通过张     

新甜七号品种生产示范总结

<正>新甜七号是新疆石河子甜菜研究所选育的甜菜雄性不育二倍体杂交种,1994年11月经新疆维吾尔自治区农作物品种审定委员会审定命名.在农九师确定为主栽品种的情况下,为使各生产单位的干部和职工对新甜七号品种的增产增糖效果有更进一步的深刻认识,特在农九师团结农场四连进行生产示范,以促进该品种尽快地在生产中推广应用.     

甜菜新品种ST9818在焉耆糖区种植表现及高产优质栽培技术要点

<正>2005~2006年巴州恒丰种业从石河子甜菜研究所引进甜菜新品种ST9818在焉耆糖区示范推广种植。平均亩产量达5~7吨,现将甜菜新品种ST9818在焉耆糖区的表现及高产优质栽培技术总结如下:1品种来源及特性1.1品种来源ST9818是雄性不育三倍体杂交种,属标准偏丰     

应用灰色关联度分析法综合评判油菜品种

采用灰色系统理论中关联度的分析法，对1999－2000年新疆油菜新品种区域试验中的8个供试品系进行了多性状的综合评价。分析结果表明，在注重产量、含油率，兼顾其它性状的权重比例下，所进行的综合评判结果与大面积生产上品种的种植情况是一致的。初步认为，本法同样适合于不同地区最佳种植品种选择的分析。     

浅谈新疆棉区农业新技术推广应用中存在的问题

新疆棉区作为中国的优质棉基地,在国内棉花产业中占有举足轻重的地位,棉花单产及总产自1995年以来稳居全国第一。2000年植棉面积100余万公顷,总产过150万吨,总产占全国总产的三分之一强。新疆棉花之所以能取得如此成就,除了国家政策因素外,更主要得益于新技术、新品种的推广应用。其中尤以"矮、密、早、膜"栽培模式的推广和"宽膜覆盖"综合配套栽培技术的推广应用为标志,促成了我区棉花八十年代末平均单产70公斤和九十年代中后期平均单产100公斤的两次飞跃,并确立了棉花在我区的支柱性产业地位。     

水稻品种明优02生产特性及市场营销策略

介绍了水稻新品种明优02的生产特性。为扩大品种推广范围，采取了一些合法的市场营销策略，取得了较好的效果。     

甜菜新品种“新引5075”

新引5075系我所1993年引进德国KWS公司新配制的二倍体雄性不育杂交种,经过3年所内品比试验鉴定,3年自治区甜菜品种区域化试验和3年生产试验,均表现突出.2000年12月经新疆农作物品种审定委员会审定命名.     

浅谈玉米新品种制种技术

<正>繁制玉米新品种是适应我区农业结构调整、品种优质化、品种更新及市场竟争,是种业持续发展的保证。在新疆区域,制玉米种是全国各大种业的首选地之一。我区自然生态区各异,不同品种在不同区所表现又不一致。如果盲目引进     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

<正>~~     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to