肥药双效剂2125,1125和菜腐灵对大白菜的影响

采用随机排列方法施用肥药双效剂1125 2.8 g.kg-1;2125 0.9,1.0 g.kg-1;以施用15%菜腐灵2.0g.kg-1为对照,探讨了肥药双效剂2125,1125对大白菜生长发育、产量、品质及生理指标的影响。结果表明:经2125处理的大白菜比对照和施用1125的极显著增加外叶数、产量、可溶性糖含量、可溶性蛋白质含量和叶绿素含量,极显著降低相对电导率。施用2125的大白菜与对照相比,极显著和显著增加叶片鲜重、干重、比叶重、净菜率和株高。施用1125的大白菜比对照极显著增加产量、可溶性糖含量、SOD、叶绿素b含量、可溶性蛋白质含量,显著降低相对电导率与叶绿素a含量。施用2125和1125的大白菜叶面积比对照略有增加,帮叶比略有提高,对大白菜“三病”的防治效果明显。15%菜腐灵虽对大白菜软腐病有一定防效,但降低产量、品质和耐储性;而施用2125和1125能促进大白菜的生长发育,提高产量和品质,改变大白菜的生理代谢机能,增加耐储性,可替代15%菜腐灵。     

4种微肥对番红花生长、品质及产量的影响

为探明大田条件下铁、锌、锰、铜4种微量元素对番红花生长、品质及产量的影响,采用叶面喷施的方法,比较不同种类和浓度的微肥处理对番红花叶片光合特性、仔球中碳水化合物的积累及种球产量的影响。结果表明:叶面喷施适量微肥可显著提高叶片净光合速率,尤以Zn肥影响最显著,增强了叶片的“代谢源”能力; 适量喷施4种微肥均可极显著增加仔球的可溶性糖、可溶性蛋白和淀粉含量,也增强“代谢库”的功能,进而显著增加仔球产量和总数。施肥量以喷施0.20%铁、0.10%锌、0.12%锰和0.10%铜的处理效果为最佳; 但过量施用会产生负效应,抑制番红花的生长,并降低其品质和产量。     

杀虫剂对菜螟防效和萝卜农艺性状直线相关研究

20 0 0年 ,进行了 5种杀虫剂对萝卜主要害虫——菜螟的防效试验。结果表明 ,药后 9d,2 .5 %菜喜6 0 0倍液 ,10 %除尽 180 0倍液两种杀虫剂对菜螟的防治效果良好。两种杀虫剂对菜螟的防效与萝卜农艺性状之间呈极显著直线相关     

泡腾颗粒药肥中除草剂的释放特性

 为提高颗粒药肥中除草剂的释放性能,制备了具有泡腾特性的除草药肥颗粒,以亚甲基蓝比色法评价其泡腾特性,研究了除草药肥颗粒中苯噻酰草胺和苄嘧磺隆的释放过程.结果表明,颗粒药肥具有显著的泡腾作用,苯噻酰草胺和苄嘧磺隆释放平衡时间为15和11min,仅为传统型颗粒药肥的33.3%和36.7%.两种除草剂的释放过程均遵循双常数方程和Logistic方程,且相关性达到极显著水平(P<0.001),释放速率由液膜扩散和颗粒内扩散联合控制.     

叶面肥1125对月季生长及衰老影响的研究

在月季展叶期叶面喷施 3.3mL·L-1叶面肥 112 5 ,以清水为对照 ,探讨了叶面肥 112 5对月季生长发育及衰老生理的影响。结果表明 :叶面肥 112 5能协调月季营养生长和生殖生长的关系 ,使月季株高、茎粗分别比对照增加 11.9% ,9.5 % ;叶片鲜、干重分别增加 7.4 % ,5 .7% ;叶面积和单枝叶片数比对照分别减少了 5 .5 % ,11.1% ;叶绿素含量和比叶重的增加与对照相比差异均达到极显著水平 ;延缓月季花的衰老 ,使其单朵花期比对照延长 3d ;其花径在蕾期和半开期都有所增大 ,从盛开期到衰败期与对照相比 ,差异达到显著水平 ;明显增加花瓣数、降低黄萎病的发病率、病情指数与对照相比差异均达到极显著水平 ;叶面肥 112 5处理的月季花 ,其超氧化物歧化酶 (SOD)活性从蕾期到衰败期与对照相比差异均达到极显著水平。     

上海滨海地区盐碱地蔬菜栽培土壤的微生物改良及其评价

为了改良上海滨海地区盐碱地的土壤肥力状况,使之转变成适合蔬菜生产的土质环境,实验通过混合盐碱土与有机肥后,喷施基于有机基质协同降解的复合微生物对盐碱土进行土壤改良.结果表明:盐碱土混入5∶1的有机质肥后,施加0.5%的1∶3∶3∶1的地衣芽孢杆菌、假单胞菌、黄杆菌和鞘氨醇单胞菌菌液的复合微生物能快速增强土壤有机质的利用能力,显著提高土壤微生物数量和多样性指数.同时,土壤中的脲酶、磷酸酶、纤维素酶和过氧化氢酶等酶学指标显著上升.改良土的蔬菜栽培试验显示栽培50 d后青菜的生物量比原始盐碱地产量增加近1倍,比单纯施加有机肥的产量增加30.2%.结论对盐碱地的生物改良具有良好的参考、应用价值.     

叶面喷施中微肥对文冠果的影响

【目的】研究叶面喷施中量和微量元素肥料对文冠果生长、产量和品质的影响,以筛选最适文冠果的中微量元素肥料。【方法】利用大田试验,以4年生文冠果为试验材料,在土壤施肥的基础上叶面喷施中微量元素肥料,设置硼(B)、铁(Fe)、锌(Zn)、钼(Mo)和硅(Si)等5种施肥处理,喷施质量浓度分别为150、65、300、10、210 mg/L,以叶面喷施清水为对照(CK),共6个处理,叶面喷施共进行3次。测定叶面肥施用前后文冠果的树高、地径、冠幅、叶绿素含量等生长和生理指标,果实成熟后测定果径、单株结果数、单果籽粒数、千粒质量、种子出仁率、百叶干质量等产量和品质指标。基于测定的各项指标,使用主成分分析法对施肥效果进行评价,进而分析不同中微肥对文冠果的影响。【结果】中微量元素对文冠果的生长主要体现在：对树体生长、百叶干质量和叶绿素含量、果实产量和品质的影响,且不同元素具有不同的影响。在树体生长方面,Zn肥显著提高了文冠果的树高和冠幅,增长量分别为25.53、22.33 cm,是CK处理的1.40和1.46倍,Si肥显著提高了树高、地径和冠幅,分别增长了22.60 cm、7.66 mm、21.17 c...     

酵素和生根壮苗剂对对开蕨组培苗生长的影响

以2 a生对开蕨组培苗为试验材料,0.3%尿素+0.3%磷酸二氢钾为对照,对对开蕨组培苗喷施酵素和生根壮苗剂两种叶面肥,研究两种叶面肥对其生长的影响.结果表明:随着施肥次数的增加,各处理下对开蕨组培苗生长加快,长势增强.与对照相比,叶面施肥后处理6的叶片数量、叶面积增幅最大,差异达显著水平(P0.05),处理3次之;处理5的株高、冠幅净增长量最大,差异显著(P0.05);各处理的新萌发叶片数量和孢子囊叶片数量无明显差异;处理6的比叶重见效最快,施肥后期各处理无显著差异.综合考虑,生根壮苗剂600倍最有利于对开蕨组培苗的生长,其次是1 000倍花粉酵素+700倍光合酵素+10 000倍开根酵素.     

铅尾矿渗出液胁迫对黄菖蒲的生长与生理的影响

以鸢尾属植物黄菖蒲(Iris pseudacorus L.)为材料,研究不同比例Pb尾矿渗出液作为栽培基质对黄菖蒲幼苗的生长与生理指标的影响.结果表明,随着Pb尾矿渗出液体积分数不断升高,黄菖蒲幼苗各项生长指标都有一定程度的下降,在Pb尾矿渗出液体积分数为75%时,地上和地下部的干质量与对照相比差异显著(P0.05).在Pb尾矿渗出液体积分数为100%处理条件下,叶绿素a、b和类胡萝卜素质量分数较对照相比分别下降了42%、46%和52%.所有处理黄菖蒲地下及地上部相对电导率均高于对照.而地上和地下部的超氧化物歧化酶(SOD)活性都随Pb尾矿渗出液体积分数的升高而增加;在100%Pb尾矿渗出液胁迫下,地上和地下部过氧化物酶(POD)活性上升最显著(P0.05),分别是对照的1.2倍和1.5倍.地上及地下部脯氨酸(Pro)质量分数最高值都出现在Pb液体积分数为100%处理中,均与对照差异显著(P0.05).黄菖蒲地上和地下部分的抗坏血酸(AsA)质量分数随Pb液体积分数的提高呈下降的趋势.试验结果表明,黄菖蒲在Pb尾矿渗出液胁迫下有一定的生理抗性,黄菖蒲能够用于Pb尾矿渗出液及其污染环境的修复.     

植物生长调节剂影响草莓产量品质的试验

本试验以露地栽培的＂丰香＂草莓为材料,在初花期、盛花期和座果期喷施赤霉素（GA3）15mg/kg、吡效隆（CPPU）40mg/kg、胺鲜酯（DA-6）20mg/kg、芸苔素内酯0.06mg/kg、赤霉素.芸苔素复配剂2000×进行喷叶、喷花和喷果处理,三次重复,以清水为对照,研究不同的植物生长调节剂对草莓产量、品质的影响。结果表明：5种不同植物生长调节剂处理均显著提高了草莓的产量。CPPU处理降低了果实可溶性固形物、可溶性糖、Vc的含量和糖酸比,使草莓内在的品质有所下降,其余4个品种均能显著提高草莓的营养物质比例,改善了草莓品质,提高了草莓商品率。     

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.     

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.     

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.     

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.     

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。     

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.     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-