绿豇豆若干高效配套技术的研究

根据绿豇豆生长习性和高效配套技术试验结果表明,在整枝方式上宜采用抹芽、摘心;采用质量分数为2.5%敌杀死乳油2500倍液和覆盖25目防虫网纱防治豇豆荚螟,安全,有效; 667 m2施基肥4 000 kg腐熟厩肥 25 kg复合肥,种子产量增加显著;将200 kg种子用质量分数为56%磷化铝3.3 g在密闭容器中熏3 d,后晾种4 d,防治绿豆象既省工、防效又好且种子发芽率高.1999～2001年间对5种配套技术上进行试验研究,筛选出各自的高效配套技术.     

接骨木种子处理方法对发芽率的影响

以长白山林区人工采集的野生接骨木种子为对象,研究接骨木种子处理不同方法对种子发芽率的影响.实验结果表明:种子处理采用砂藏方法,按m细沙子:m种子=3∶1比例混合,32~43℃高温处理效果最好,发芽率达到85.3%.     

毛红楝子的育苗试验研究

采集处理毛红楝子的种子,对种子主要参数进行观测分析,并通过对其育苗方法的试验,初步研究了毛红楝子的育苗技术、苗期生长规律.结果表明：毛红楝子大田育苗播种量以4～5g/m2为宜,1年生苗高平均可达97cm,地径平均0.95cm,根系发达,可出圃造林;苗高生长高峰在7月下旬至9月中旬,期间应加强水肥管理,促进苗木生长.     

不同温度覆土厚度浇水量对玛咖发芽的影响

以云南丽江购买的黄玛咖种子为试验材料,设置温度、覆土厚度、日浇水量3个因素。温度为20、24、28℃,覆土厚度为0.7、1.4、2.1 cm,日浇水量为10、15、20 m L,三因素三水平按正交旋转设计为27个处理,研究温度、覆土厚度、日浇水量对玛咖种子发芽率和发芽势的影响。结果表明:玛咖的发芽率最优水平为覆土厚度0.7 cm,温度20℃,每日浇水量15 m L,该水平组合下玛咖种子的发芽率为46%。覆土厚度对玛咖发芽率的影响最大,温度的影响其次,日浇水量的影响最小。     

见血封喉的生物学特性

对见血封喉的生长、物候和种子萌发等生物学特性进行观察。在西双版纳地区,见血封喉的营养生长和开花结果都集中在干季(2～5月)。种子无休眠期,新鲜种子发芽率高达(94±6.0)%;种子含水量、贮藏方式和发芽率试验结果表明:保证见血封喉种子生命力的安全含水量应在30%以上;种子室内通风存放5个月时发芽率降为36%,低温湿沙贮藏5个月时种子发芽率为82%。     

青冈栎等6种林木种子耐脱水性研究

研究了脱水对青冈栎(Cyclobalanopsis glauca)、山杜英(Elaeocarpus sylvestris)、无患子(Sapindusmukorossi)、观光木(Tsoongiodendron odorum)、香叶树(Lindera communis)和金叶含笑(Michelia foveolata)等6种林木种子浸出液相对电导率、发芽率和发芽指数的影响。结果表明:除无患子外,随脱水时间的延长,其他5个树种种子浸出液相对电导率均有逐渐升高的趋势,发芽指数有比较显著的下降;随着脱水程度的不断加深,6个树种种子的发芽率均有下降的趋势,但树种不同,种子发芽率下降程度和下降过程均有很大差别。6个树种中,无患子种子可归为次正常性种子,其他5个树种种子介于正常性与顽拗性之间,其中青冈栎的耐脱水性最高,山杜英次之,观光木、金叶含笑和香叶树的耐脱水性较差。     

PEG浸种对麻疯树种子萌发状况及脂类成分的影响

以低场核磁共振无损检测麻疯树种子的含油率,发现高含油率(40%～45%)种子的发芽率、发芽势及发芽指数均高于低含油率(30%～35%)种子;PEG浸种处理降低了种子的吸胀速率、发芽率、发芽势及发芽指数;干旱胁迫对低油种子的影响大于高油种子,说明麻疯树种子的脂类成分对种子的萌发表现及抗旱性有重要作用.麻疯树种子脂类成分~1H-NMR图谱的主成分分析PCA分析结果显示,PEG浸种处理提高了种子中不饱和脂肪酸的含量,降低了饱和脂肪酸的含量;不同含油率种子中脂类成分在PEG浸种处理后出现差异.     

蒜头果种腐病研究初报

于2000年10月至2001年5月做蒜头果（Malana oleifera Chun et S.Lee）种子沙藏试验,沙藏2个月后随机抽样100粒种子解剖检查,发现种子感病率64%,其中全部腐烂变质率高达50%,局部感病率14%,沙藏5个月发病率达72%,从蒜头果树病腐组织分离、纯化得到4个属的6个菌株病原真菌,镜检到一种线虫。分别用这6个菌株的菌丝与分子孢子的混合液体进行人工接种试验,结果表明,茄类镰刀菌（Fusarium solani）和黄萎轮枝菌（Verticllum albo-atrum Reinke et Berthold.）表现出较强的致病力,认为它们是蒜头果种腐病的致病菌,并对它们的形态特征及引致的症状特点作了描述,线虫的危害状尚未明确。     

槭树属常见树种翅果性状多样性与风传播特征分析

【目的】研究15种槭树属树种翅果性状,探究果实性状和风传播特征之间的相关性,为深入研究槭树属植物果实的风传播机制和种群扩张提供理论参考。【方法】以15种槭树属树种翅果为材料,在分析种子长度、种子宽度、果翅长度、果翅宽度、种子长宽比和种子长/果翅长特征等参数的基础上,模拟果实的传播特征(沉降速度和水平传播距离),比较15种果实性状和风传播特性间的相关性。【结果】①15种槭树属树种翅果开张角度对沉降速度和水平传播距离的影响最大,种子宽度影响较弱;②15种槭树属树种翅果沉降速度为69.14~224.06 cm/s,扇叶槭最慢,梣叶槭最快;扇叶槭果实的水平传播距离最远,梣叶槭最近;③15种槭树属植物果实沉降速度与种子长度、果翅长度、果翅宽度、种子长宽比和种子长/果翅长正相关,与果实两翅开张角度和种子宽度负相关;水平传播距离与果实两翅开张角度、种子长、果翅长、果翅宽、种子长宽比和种子长/果翅长均呈负相关,而与种子宽度正相关,果实水平传播距离与其沉降速度呈负相关,果实沉降速度和水平传播距离受多种性状影响;④对15种槭树翅果的8个性状主成分分析表明,前3个主成分的累计贡献率达82.911%, 基于8个性状进行聚类分析可知,当欧氏距离为10时,15种槭树可分为4类。【结论】果实形态特征的相关性分析表明,15种槭树果实形态特征对沉降速度的影响依次为:两翅张开角度>种子长/果翅长>种子长度>果翅长度>种子长宽比>果翅宽度>种子宽度。果实的水平传播距离受多种因子的综合制约。千粒质量、两翅张开角度、种子长/果翅长可作为槭树分类的重要依据。     

杉木、檫树不同混交方式效果分析

营造杉、檫混交林的关键技术是两树种的株数配置和株行距设置，试验结果表明：以杉木为主的混交林，若采用星状混交，每亩檫树20株以下为好，若采用行间混交，每亩檫树30株左右为宜，可一行檫二行杉（横行状），或一行檫三行杉（竖行状）为宜；杉、檫混交林株行距设置，应以有利于促进全林生长，平衡增产为原则，若是行间混交，行距2．3—2．5m为宜，株距：杉木1．5—1．7m，最多不超过2m，檫树2．7m左右，最多不超过3m，不管何种混交方式，杉木相距檫树的株行距都应适当放宽。     

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…     

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。     

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     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

正~~     

An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.