刚竹毒蛾生物学特性及防治研究

刚竹毒蛾Pantana phyllostachysae Chao 1年发生3代,以卵和初孵幼虫越冬,越冬幼虫翌年3月开始活动,6月上旬为第1代幼虫孵化盛期,8月下旬为第2代幼虫孵化盛期,11月出现第3代幼虫。气温是影响刚竹毒蛾危害的重要因素,在防治上要抓住幼虫3龄期前和成虫期进行防治,使用2.5%溴氰菊酯、80%敌敌畏和柴油按1:0.5:50制成的油烟剂防治效果最好。     

刚竹毒蛾生物学特性及防治研究

刚竹毒蛾 Pantana phyllostachysae Chao 1年发生3代,以卵和初孵幼虫越冬,越冬幼虫翌年3月开始活动,6月上旬为第1代幼虫孵化盛期,8月下旬为第2代幼虫孵化盛期,11月出现第3代幼虫。气温是影响刚竹毒蛾危害的重要因素,在防治上要抓住幼虫3龄期前和成虫期进行防治,使用2．5％溴氰菊酯、80％敌敌畏和柴油按1：0．5：50制成的油烟剂防治效果最好。     

豫南板栗林栗皮夜蛾的生物学特性和防治研究

豫南板栗林栗皮夜蛾1年发生3代.以老熟幼虫在落地栗蓬刺束间或树皮裂缝中结茧化蛹(化蛹于白色丝茧中)越冬,或以幼虫在被害栗蓬总苞内越冬.第1代幼虫于6月上旬开始为害,6月下旬为第1代成虫盛发期.第2代幼虫在7月初孵化.化蛹场所高度集中在原被害蓬上.第1、第2代为害板栗较重,第3代为害较轻.豫南丘陵板栗产区采用农业和生物方法防治该虫,6年防治实验表明,该方法平均株杀灭效果可达90%.     

蜀柏毒蛾Parocneria orrienta的初步研究

蜀柏毒蛾是福建省柏木的一种重要害虫,在福建一年发生2代,以幼虫越冬。翌年4月下旬越冬幼虫开始化蛹,5月上旬始见成虫。第一代幼虫5月中旬孵出,第二代幼虫9月中旬出现,幼虫危害严重期是3月下旬至5月中旬,其次是7月下旬至8月下旬。林间防治以PIB5×108个/mIPoNPV 20％氰戊菊酯(1:15000)倍液喷洒,或是PIB5×108个/mIPoNPV 5亿孢子/g白僵菌 20％氰戊菊酯(1:15000)的配比,防治效果最好。病毒的防治运期应掌握在5月上旬。     

稻水蝇(Ephydra macellaria Egger)生活史研究

稻水蝇在内蒙古东部地区年发生 4代 ,世代重叠 ,发育历期世代间存有极显著的差异 ,虫态间发育历期除幼虫与蛹外亦呈极显著差异 .成虫越冬 .4月下旬越冬成虫大量出现 .4月下旬见一代卵 ,5月 10日为一代幼虫盛发期 ,化蛹在 5月 2 5日始盛 ,一代成虫于 5月下旬可见 .第二代 5月下旬见卵 ,6月上旬至 7月上旬幼虫发生 ,6月中旬至 7月上旬化蛹 ,6月下旬至 7月中旬为二代成虫可见期 .第三、四代幼虫分别发生于 7月上旬及下旬 ,第四代成虫于 8月中旬羽化 ,8月下旬达到羽化高峰并越冬 .第 2代危害严重 ,发生数量极显著多于其它各代     

丝棉木金星尺蠖的生物学特性及防治

丝棉木金星尺蠖是宁波市区危害冬青卫矛的主要害虫。每年发生3—4代，以幼虫、蛹越冬．文章报告了该虫在宁波的形态、年生活史、生活习性及危害特点，并提出防治技术。     

侧柏毒蛾的生物学特性观察与防治技术研究

1998年在兰州市城关区南山的兰州铁路局房建段兰州林场、市政府林场、省外贸林场5号点上发生侧柏毒蛾危害刺柏.主要是幼虫啃食嫩叶,致使树叶枯黄,严重的能导致整株枯死.作者于1998～1999年对侧柏毒蛾的形态、生活史及习性进行了系统的观察研究与防治试验.     

黄南州麦秀林区侧柏毒蛾防治

1 危害与生活特性　侧柏毒蛾又名圆柏毛虫、柏毒蛾,属鳞翅目、毒蛾科.幼虫主要危害圆柏、侧柏等的嫩芽、嫩枝和老叶.受害林木枝梢枯秃,生长势衰退,似干枯状,2-3年内不长新枝,林分的生态功能明显降低.     

落叶松叶蜂防治措施及防治效果分析

本文浅析了巴林左旗北部落叶松人工纯林内落叶松红腹叶蜂[Pristiphora erichsonii(Hartig)](膜翅目,叶蜂科)发生、发展规律。20世纪90年代发生的落叶松红腹叶蜂在乌兰坝、石棚沟林区一年发生一代,以老熟幼虫在落叶层下丝茧内越冬。第二年5月中、下旬到6月中旬化蛹。蛹期14~30d。5月下旬到7月上旬成虫羽化交配、产卵。6月上旬到7月上旬卵孵化为幼虫,为害国家级林木良种基地华北落叶松和兴安落叶松嫩梢及针叶乃至于其他人工落叶松林地。7月末和8月上旬,老熟幼虫进入落叶层结茧并在茧内越冬,并着重探讨了落叶松叶蜂防治措施及防治效果分析。     

豆卷叶螟及其主要寄生蜂——长颊茧蜂的若干生物学特性

豆卷叶螟Lamprosema indicata Fabricius是菜用大豆的一种重要食叶性害虫.在福州地区1a发生4-5代,以老熟幼虫越冬,次年越冬幼虫4月中下旬出蛰.5月中下旬是第1代幼虫危害高峰期,第1代成虫高峰期在6月中旬;第2代幼虫高峰期在6月下旬,7月中旬是第2代成虫高峰期;8月中下旬第3代幼虫盛发,9月上旬是第3代成虫的高峰期;第4代幼虫发生期在9月中下旬,9月下旬10月上旬是第4代成虫盛发期;10月中旬是第5代幼虫的高峰期.豆卷叶螟的主要寄生性天敌有长颊茧蜂Dolichogenidea sp.、广黑点瘤姬蜂Xanthopimpla.punctata,Fabricius、广大腿小蜂Brachymeria lasus Walker和家蚕追寄蝇Exorista sorbillans Wiedemann,其中长颊茧蜂是天敌优势种,其田间寄生率最高可达80%,对豆卷叶螟的种群的控制起主要作用.     

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.     

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.     

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with