恩施地区板栗芽接及其管理的时间效应

春季和秋季进行板栗芽接试验,分别测验不同嫁接时间、春季嫁接不同时间剪砧和秋季嫁接不同时间解绑对嫁接成活率的影响,结果为:嫁接时间时板栗芽接成活率具极显著影响,秋季嫁接成活率高于春季嫁接成活率,在恩施秋季最适宜的芽接时间为9月上旬嫁接;剪砧时间对板栗嫁接成活率影响显著;解绑时间对板栗秋季芽接成活率影响不显著,影响接穗发芽率和发芽时间.     

提高良种龙眼嫁接成活率的试验研究

以广东龙眼主栽品种：大乌圆、储良、大果、双孖木、石硖为试材，分别用不同方法、不同时期、不同砧穗组合进行嫁接多项研究，结果表明：单芽切接的成活率最高，达到75％以上，在不同季节的嫁接实验中，春末夏初(3-5月)是最合适的嫁接季节；在以大乌圆为砧木的嫁接实验中，分别采用储良、大乌圆、大果、双孖木、石硖为接穗，采用单芽切接的嫁接方法，发现双孖木为接穗的嫁接成活率最高，达55．9％．     

板栗嫁接改良接穗保鲜技术研究

板栗穗条的鲜活程度直接关系到嫁接成活率的高低,为此,我们就接穗的保鲜技术进行了对比试验,找到最佳方法,最大限度地减少水分散失,延长嫁接时间,节省人力和提高效果,确保了较高嫁接成活率。     

核桃夏季大方块皮芽接技术

核桃嫁接成活率不高，是制约核桃良种化的障碍。近年来，推广应用了核桃夏季大方块皮芽接技术，主要方法是：选择接穗，准备砧木，削接穗、切砧木、贴芽皮、包扎接口，并做好嫁接后的管理，除萌芽、绑支架，解除绑扎物．适时摘心，加强水肥管理，成活率达85％以上。     

柚,枇杷,甜樱桃等果树夏季长接穗高接初探

睡季对柚,枇杷甜樱桃等果树进行原树挂果长接穗嫁接试验,方法彩改良的腹接,发接,对所用长接穗采用包膜保湿,其嫁接成活率为：同９２．５％－１００％,枇杷两年生接穗８０％;一年生接穗３７．５％,甜樱桃９５％－９７．５％,桃９７．５％。     

青钱柳嫁接愈合过程中砧穗生理特性及其与亲和性的关系

[目的]采用不同砧木嫁接青钱柳,分析不同嫁接组合接穗和砧木生理指标的差异,探讨砧穗生理特性与嫁接成活的关系,为青钱柳砧穗嫁接亲和性的早期预测和砧木选择奠定基础.[方法]分别以枫杨(F)、薄壳山核桃(B)和青钱柳(Q)作为砧木嫁接青钱柳接穗(3种嫁接组合),采用切接的方法进行嫁接,测定嫁接后0、40、70 d各嫁接组合砧...     

法桐高接不育变种研究

采用劈接、切接、长方形芽接三种方法以及不同成熟度的接穗枝条对法桐高接的成活率、抗风力进行了研究。结果表明：在三种嫁接方法中，长方形芽接成活率最高，切接次之，劈接成活率稍低；在枝条不同部位中，以中部做接穗成活率最高；在不同成熟度接穗枝条中，以顶芽形成枝做接穗成熟率较高，未形成顶芽枝成活率较低；在抗风能力的比较中，劈接抗风力最强，切接抗风力较弱。     

广东省试验成功板栗根接繁殖

在毛主席光辉哲学思想指引下,广东省阳山种苗场广大革命职工,为革命育苗,敢于实践,用板栗根代替砧木嫁接获得成功,为多、快、好、省地发展板栗生产闯出了一条新路。实践证明,板栗根接繁殖,除了具有一般嫁接法繁殖的生长快、提早结果、能保持品种优良特性等优点外,还有如下好处:(1)由于不用种子繁育,可以节省大量粮食,降低育苗成本。一亩板栗苗残留下来的根可繁殖八至九亩板栗嫁接苗,就可节约近两千斤板栗种;(2)扩大砧木来源,每株板栗苗出圃后残留下来的根可作五至十五条砧木之用,有利于无种源地区发展板栗生产;(3)由于根部组织比较松软,嫁接成活率比一般嫁接法高,同时可以在室内     

山西省科技情报研究所馆藏文献文摘

农业科学Ｓ６６０．４２７２板栗芽苗砧嫁接技术〔刊〕／邓中美…（湖北省秭归县林业局）∥林业科技开发——１９９９．（１）．４３～４４板栗是深根性植物，通过断胚根的技术处理，其苗木无明显主根，侧根特别发达，造林成活率达９８％以上。用此法生产的嫁接苗造林后，...     

不同樱桃嫁接组合的形态及生理指标评价

为筛选适宜青海地区樱桃嫁接砧木及接穗品种，文中以吉塞拉6号为砧木，17个樱桃品种为接穗，研究不同樱桃嫁接组合的形态及生理指标，对苗木定植后成活率进行调查，利用主成分分析法对17个樱桃嫁接组合的嫁接成活率、株高、穗砧直径比、干物质含量、总酚含量、POD活性、PAL活性等7个指标进行综合评价。结果表明：Lambert嫁接成活率最高，Skeena嫁接成活率最低；Bing生长最快，Hedelifingen生长最慢；Saylor的穗砧直径比最大，Lapins的穗砧直径比最小；Lapins的干物质含量最大，Sweetheart的干物质含量最小；Krsten的总酚含量最大，Rainier的总酚含量最小；Attika的POD活性最大，Utah Giant的POD活性最小；Sweetheart的PAL活性最大，Summit的PAL活性最小。综上，17个樱桃嫁接组合生长较好的为Lambert、Krsten和Attika,生长较差的为Skeena、Summit和Hedelifingen。根据主成分分析图可知，成活率、株高、穗砧直径比、POD活性、PAL活性与不同樱桃品种嫁接吉塞拉6号的长势呈正相关，而干物质...     

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.     

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.     

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.     

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.     

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.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.