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1.
库尔勒香梨果型偏小,单果重80g-150g,平均重110g左右,成熟后果皮黄绿色或带暗红条纹,常温贮放后,果皮黄色或带有鲜红条纹的桔黄色。果型为圆锥形或纺锥形。库尔勒香梨皮薄光润,表皮腊质较重,比较耐贮运。  相似文献   

2.
论寒富苹果栽培技术   总被引:1,自引:0,他引:1  
刘霞 《科技信息》2012,(21):444-444,454
寒富苹果是沈阳农业大学李怀玉教授用东光×富士杂交选育而成的。果实短圆锥形,果形端正,全面着鲜艳红色,特别是摘掉果袋经摘叶转果后,果色更美观。单果均重250g以上,最大果重已达900g,是目前苹果当中单果重最大品种之一。果肉淡黄色,肉质酥脆。汁多味浓,有香气,品质上耐贮性强。  相似文献   

3.
随水滴施缩节安和多效唑对棉花幼苗生长发育的影响   总被引:1,自引:0,他引:1  
在11.59-92.67g/hm^2用量内随水施用97%缩节安,对棉花幼苗侧根的发生、根系活力、幼茎的伸长等没有明显的促进或抑制作用,对棉花幼苗的生长调控作用不明显。随水滴施多效唑对于调控棉苗生长发育具有明显的效果,其适宜施用纯量为11.25-22.5g/hm^2,施用量超过45.0g/hm^2以上时,则明显影响了棉种的发芽率、出苗率和根系发育,使棉种出苗速度减慢。  相似文献   

4.
侯修胜 《科技信息》2008,(32):382-382
早春蜜桃果实圆整,外观美,全红,单果重160~260g,品质优,耐贮运,白花结实,极丰产,保护地栽培经济效益高。我们经过几年的实践,摸索出一套成功的管理经验。现将主要栽培措施简报如下。  相似文献   

5.
不同品种辣椒种子发芽和苗期耐冷性差异的研究   总被引:23,自引:0,他引:23  
采用低温下发芽鉴定和苗期低温处理后生理生化指标的测定等方法,研究了8个辣椒品种种子萌发期和幼苗期的耐冷性反应,结果表明供试材料对低温反应存在的差异。低温下室内耐冷性鉴定指标为15℃和20℃。低温引起细胞膜透性改变,导致电解质外渗,细胞内可溶性糖含量上升,同时出现萎蔫、倒伏等冷害症状。根据种子发芽率、膜透性变化等生理指标的综合评定,可将8个品种的辣椒分为:耐冷力强(麻辣三道筋、北京茄门、四平头)、耐冷力中等(西夏牛角王、保加利亚尖椒、伊犁牛角椒)、耐冷力弱(洛椒4号、洛椒6号)3类。  相似文献   

6.
米莹 《甘肃科技》2013,29(13):142-146
牛角花齿蓟马(Odontothrips loti)是我国北方为害苜蓿的重要害虫之一,严重影响苜蓿的产量与质量。就此选用8个苜蓿品种(M8、HA-3、Al、Ja、ZM1、WL232、ZD和LD),设置3个牛角花齿蓟马虫口密度(3头/株、5头/株、10头/株),在室内进行了6叶期抗牛角花齿蓟马评价,研究了不同抗性品种在牛角花齿蓟马成虫为害后的生长发育情况。在3个虫口压力下,HA-3苜蓿均表现为对蓟马的为害具有极高的补偿作用能力或耐害性,其次为WL232、M8苜蓿;而Ja苜蓿均表现为对蓟马的为害不具有耐害性。综合去虫后30d各苜蓿品种株高的结果为:HA-3苜蓿、M8苜蓿、WL232和ZM1苜蓿对牛角花齿蓟马具有生产意义上的耐害性。  相似文献   

7.
辣椒新品种     
赵淑红 《科技潮》2009,(9):35-35
辣椒:中椒106号 生长势强,中早熟.定植后4~5周即可采收。果实粗大、牛角形,平均单果重55~80克,大果可达100克以上,果面光滑.果色绿.生理成熟后亮红色。微辣,耐贮运。抗逆性强.抗烟草花叶病毒病。亩产可达4000~5000公斤。适于北京地区露地或大棚栽培,也适于全国其他地区栽培。  相似文献   

8.
甜瓜新品种     
赵淑红 《科技潮》2010,(1):41-41
甜瓜:京玉四号 京玉四号是富于浪漫网纹的红肉品种.它的果实呈圆球形果皮灰绿色.果肉橙红色.网纹精美大方.单果重15—22公斤,含糖量14%-18%。耐储存.货架期长.具有高抗白粉病.适合保护地高档礼品栽培。  相似文献   

9.
赞新到枣(赞皇大枣):结果早、丰产稳定、品质优良。果型为倒卵圆型,平均单果重24.7g,果皮深紫红色、被腊质、有光泽、不裂果;肉厚、近白色。果核小、可食率96.1%。干制红枣果形饱满、果肉富弹性、耐挤压,质细味甜,色泽艳丽,品质上等。果核仿锤形。产地5月下旬开花,10上旬收果。  相似文献   

10.
以耐低钾与不耐低钾的玉米自交系为材料,通过低钾和正常供钾的砂培试验,研究耐低钾玉米苗期保护酶活性及活性氧的特征。结果表明,耐低钾与不耐低钾自交系玉米的O2-产生速率、H2O2含量、SOD和POD活性在正常供钾条件下没有差异。低钾胁迫条件下,在幼苗生长后期耐低钾自交系的O2-产生速率明显提高,POD活性有所增加;不耐自交系O2-的产生速率降低,POD活性明显增加。  相似文献   

11.
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.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
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.  相似文献   

14.
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.  相似文献   

15.
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。  相似文献   

16.
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.  相似文献   

17.
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.  相似文献   

18.
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-  相似文献   

19.
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-  相似文献   

20.
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  相似文献   

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