Pt-Re-MCM-41催化剂的制备、表征及其催化热解玉米芯制呋喃类化合物     

李文斌  郑云武  李水荣  卢怡  郑志锋 《林产化学与工业》2020,40(2):83-92

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鱼饵料的合理配制可降低环境的影响     

Jensen  P 徐亮 《饲料广角》1992,(4):42-43

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Study on Cultural Technologies and Salt-resistance of Nitraria sibirica in Coastal Areas with Serious Salt-affected Soil     

ZHANG Jianfeng XING Shangjun SUN Qixiang XI Jinbiao SONG Yumin Research Institute of Forestry  CAF  Silvicultural laboratory of Forestry  SFA  Beijing  P.R.China Shandong Academy of Forestry  Jinan  P.R.China 《中国林业科技(英文版)》2004,3(4):12-16

In this research, five Nitraria sibirica provenances such as Dayilu were selected to do experiment of salt-resistance, combining fixed plots test with typical plot investigation, measuring survival rate and growth as main indicators. The experiments of main cultural technology were done on Nitraria sibirica in 4 types of site preparation, 3 types of planting, 3 designs for planting density. The Nitraria sibirica experiments for the effects of curbing salt and improving soil were done by testing soil nutrients, salt content, soil physical properties as focal points in typical site of 3-4 years woods. The experiment results showed that the Nitraria sibirica could survive well with soil salt content of 0.6%, and that survival rate declined distinctively as soil salt content exceeded 0.8%. However, high soil salt content did not influence growth in the year of planting. There were obvious differences in salt-tolerance among Nitraria sibirica provenances; Dayilu was the best on salt-tolerance, the other 4 pro  相似文献   

小麦数量性状的遗传结构     

向平 Chand  P 《国外作物育种》2001,20(2):28-29

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沙棘在西伯利亚面临的问题与解决办法   总被引：2，自引：1，他引：1  

P·L·贡恰诺夫  刘振和 《沙棘》2001,14(1):41-43

针对西伯利亚沙棘繁育发展中的问题，尤其是20世纪30年代从郭尔诺－阿尔泰地区引入的沙棘客体连续出现的品种变化，混杂和应淘汰等问题，指出：这里的沙棘，不但从野生发育形态方面出现诱变，而且目前在西伯利亚仅有20个左右繁育着的品种，在展示着原品种较为完备的特性；能按时结果；树冠低矮；有刺；浆果稳定。总的看，几乎在整个俄罗斯20个区域内传播着，占俄罗斯栽植品种的1／3。当然，每个品种都有有一个生物经济的所有制和栽植前的宣传发布与公认问题，解决这些问题，就能在各种不同地区加强推广和普及。但到目前为止，西伯利亚栽植繁育着的沙棘，还只是不多的原有一些品种，使用的还是过去认为效率高的多样化方法。  相似文献   

Development of SSR Markers towards Genetic Mapping in Cotton(Gossypium hirsutum L. )     

Siva P.KUMPATLA  Erin C.HORNE  Manali R.SHAH  Manju GUPTA  Steven A.THOMPSON 《棉花学报》2002,(Z1)

Availability of informative molecular markers isa prerequisite for genetic mapping and marker-assisted selection projects.Micro-satellites orSimple Sequence Repeat(SSR)markers arePCR-based and currently the most widely usedmarker system in the plant molecular geneticscommunity due to their high degree ofpolymorphism,random distribution throughoutthe genome and their suitability for highthroughput genotyping formats.Despite itsglobal economic importance,cotton has slower  相似文献   

氰胺对猕猴桃新梢花量及着花部位的影响     

E.F.Walton  P·J·Fowhe.  余武安  蒋迎春 《西南园艺》1996,(1)

氰胺应用在许多植物上,以克服冬季低温不足。新西兰、以色列、南非和智利等国猕猴桃商品栽培中也广泛应用氰胺,其主要作用是提高萌芽率,且萌芽整齐,增加单位花枝上的花量。不过,应用的时间和浓度是相当关键的。  相似文献   

低分子量麦谷蛋白在决定通心面蒸煮品质中的作用   总被引：2，自引：0，他引：2  

Feill.  P 赵和 《国外农学:麦类作物》1991,(1):37-39

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高湿度引起栽培番茄果实的蒂腐病     

G.S.Banuelos  G.P.Offermann  邢堑 《蔬菜》1986,(3)

蒂腐病(BER脐腐病)是一种与番茄果实内钙失调有关的病害,在田间或温室中引起严重的经济损失。这种失调通过果实顶端部分的坏死很容易鉴别,它与组织中Ca的浓度较低有关。当水移动到果实暂时停止或植株受旱到一定程度其蒸腾量减少时,会发生损伤。Ca基本上是随着蒸腾流而运送到整个植株的。因  相似文献   

Humble Opinion of Roof Gardens     

WANG Xiaoxiao MA Qiangqiang CAO Xiaojun . Wuhu Luhuan Company Ltd. of Landscape Architecture  Wuhu  P.R.China . Northwest Minorities University  Lanzhou  P.R.China . The Scientific  Technological Incorporated Company of Donghua Engineering  Hefei  P.R.China 《中国林业科技(英文版)》2005,4(2):36-43

1 GENERALRoof gardens can be extensively interpreted as ageneral designation, which means building variousrecreational garden on roofs, gazebos and terracesof both ancient and modern buildings, structures, andbridges (flyovers) (Jin Weiping, 1996). Cities aredensely populated and land is costly, so shortage ofland is one of the restrictive factors in green urbandevelopment. According to statistics, the green spaceis 2~3 m2 per capita in Chinese cities. As a result, todevelop roof gardens h…  相似文献