紫花苜蓿药害试验报告

用25％阔草克EC，14％双锄EC，10％克草特EC对紫花苜蓿(阿尔岗金品种)进行药害试验，采用25％阔草克EC80g／667m^2，25％阔草克EC100g／667m^2，25％阔草克EC120g／667m^2，14％双锄EC100ml／667m^2，14％双锄EC120ml／667m^2，10％克草特EC20ml／667m^2，10％克草特EC40ml／667m^2，10％克草特EC60ml／667m^2和对照共9个试验处理，试验结果表明25％阔草克EC80g／667m^2，100g／667m^2的处理药害指数分别是10和20．14％双锄EC100ml／667m^2，120ml／667m^2的药害指数分别为10和20，田间可以使用，而25％阔草克120g／667m^2，10％克草特EC20ml／667m^2，40ml／667m^2，60ml／667m^2的药害指数分别是30，100，100，100，不能在紫花苜蓿草上使用。     

百合田杂草的化学防治

通过对百合及百合田杂草生长习性的研究探讨，选用化学除草剂对防除百合田杂草的效果及安全性进行了多点实验．结果表明：24％乙氧氟草醚和33％除草通防效好，安全性高．     

稻田杂草化学防除技术

化学除草是一项投资少、见效快、防除效果好 ,使用方便 ,省工、省本、增产增收 ,而且取代了人工除草的繁重体力劳动 ,是当前发展一优两高农业 ,加快发展农业生产的一项重要技术措施。随着家庭联产承包责任制的推广 ,农村商品生产和工副业的发展 ,以解放劳动力 ,提高经济效益为宗旨的农用化学除草技术得到了迅速推广 ,目前使用面积已达到复种指数的８０ %左右。１不同类型稻田草相通过近几年调查 ,已明确为危害余杭市不同类型稻田的主要杂草 ,其中秧田杂草主要有稗草、双穗雀稗、异型莎草、节节菜、陌上菜、鸭舌草、四叶萍等 ;移栽大田杂草主…     

南方果园草情调查及化学除草的研究

在本校果园进行杂草种类初步调查，共有17科52种杂草，主要有马唐、狗牙根、空心莲子草、膨蜞菊等。除草试验结果表明：草苷膦、春多多1000倍液对各种杂草有明显的防除效果，30d总防效达92%以上，持效期长；克芜踪药后15d药效达92.7%，但持效期短，30d后有幼草萌芽；拿捕净对禾本科有较好防效，对莎草科杂草及阔叶杂草无防除作用。     

苜草净防除肇东苜蓿田杂草药效比较试验研究

肇东苜蓿属豆科阔叶植物，禾本科杂草易于药剂防治，而阔叶杂草的药剂防治是东苜蓿生产的一个难题。主要影响肇东苜蓿产量的因素是杂草。目前对杂草的防治最有效的方法是采用化学药剂防治技术。5％苜草净是防治肇东苜蓿田杂草的较好药剂。     

大理州冬季亚麻杂草种类危害及防除研究

随着亚麻面积扩大和种植年限的延长．杂草在亚麻田间生长并与亚麻争水、争肥、争养分、争光照，抑制亚麻生长，导致亚麻原茎产量下降，等级降低，是实现亚麻原茎优质、高产、高效的主要障碍因素之一。我州亚麻播种在秋冬季，田间温度、湿度较适宜各种杂草的发生危害。为掌握州内亚麻田内杂草的发生危害，给综合治理提供科学依据．从2001年10月起，我们对亚麻田内杂草种类、种群结构、发生危害及防治进行了调查研究，结果报到如下。     

草坪杂草的危害及防除技术

草坪杂草因其生物学特性，具有多结实性、连续结实性和落粒性，对草坪草造成巨大危害，在防除过程中应贯彻“预防为主、综合防治”的原则建植前期进行诱杀，成坪后进行科学的水肥管理，采用适当的化学方法进行防除，能够取得较好的效果．     

化学除草剂在苗圃地的应用试验

通过对除草剂的应用试验,不同除草剂的单独使用对阔叶杂草的除草能力,从强到弱依次为:百草枯、草甘膦、扑草净、果尔、都尔、乙草胺、高效盖草能、精禾草克;对禾本科杂草的除草能力从强到弱依次为:百草枯、扑草净、高效盖草能、草甘膦、精禾草克、果尔、乙草胺、都尔。不同除草剂的混合使用相对于单一除草剂效果和性能都有了明显的提高,特别是克乙丁试剂无论对阔叶杂草或禾本科杂草除草率都达到了100%;混合除草剂的抑草期也比单一除草剂要长。通过对难除杂草的效果试验,发现加大草甘膦浓度能提高除草效果;克乙丁试剂、草二试剂、扑草净对有害生物—加拿大一枝黄花有较好的除草效果。     

化学防除苗圃天仙子试验初报

在运用不同药剂、剂量对苗圃地杂草天仙子进行化学防除试验的基础上。分析了各试验药剂的化学除草效果。试验结果表明，采用10％草甘膦与72％2，4-D丁脂(配比5：5)的混合剂，防除针叶树苗圃地天仙子效果最佳；防除时间上在5～6月份。应用草甘膦防除天仙子是最适时期。化学防除天仙子平均每666．7m^2可节约劳动力投入3．5～3．8个工日。资金41—47元。     

兰州市园田主要杂草的发生与危害

１９９１年五级目测草害调查法调查了兰州市蔬菜和果园杂草的发生与危害情况。兰州市园田杂草共２８科１０８种，其中主要杂草有１４种，是化学防除的重点。     

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

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.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

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

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.