多叶

I have engaged in the research of rice stripe blight control for many years in Shanghai farm and found some problems: though there were some reports of research on rice stripe blight resistance, strategy of prevention and cure for the disease has been face to farmer mainly, while geographical location, cultivars and cultivation system adopted on the Farm all affect the effect of control. On the other hand, our Farm has paid attention to the chemical prevention and cure for rice stripe blight and ignored other measures. As for the chemical prevention and cure, phenomenon of drug-resistance and bad effect of prevention and cure existed usually.

本人在上海农场多年从事该课题研究过程中发现的问题：目前对水稻条纹叶枯病研究的报道较多，在防治对策上主要是针对农户，缺乏关于农场地域因素、品种、栽培制度等因素对水稻条纹叶枯病发生及防治的影响的报道；在水稻条纹叶枯病的防治上，农场仍是以化学防治为主，对其他防治措施还不够重视；在化学防治过程中，存在抗药性、防效不佳等问题。

As a result of analysis to many of the results of experiment, checked up on specimens, field investigation and combining with the theories of palaeobotany, comparative morphology, evolutional morphology of vascular plants and taxonomy, it can be concluded as following: the primitive sorts of Cycadaceae are the sorts that pinnate leafs are dichotomy; among these, the sort that pinnate leafs are tripinnate-dichotomy is most primitive, from this sort gradually evolve to bipinnate-dichotomy, to only for monopinnate-dichotomy, from this sort evolve to the sorts that pinnate leafs are simply pinna; among the sorts of simply pinna, the species that segments of megasporophyll possess much more triplicate to monodichotomy are most primitive.

经过大量的实验结果分析、查阅标本和野外调查，结合古植物学、比较形态学、演化植物学和分类学等理论进行分析，认为苏铁科原始的类型为羽叶呈二歧状分叉的种类，其中最原始的又是羽叶呈三回二歧状分叉的种类，从这个羽叶类型逐渐演化出一回二歧状分叉的羽叶类型，再演化出羽叶为单羽状的类型；而单羽状叶的类群中，又以大孢子叶侧裂片具三回、二回及一回二歧状分叉数量多的种类为最原始，而侧裂片二歧状分叉数量少的为较进化，侧裂片无二歧分叉的如拳叶苏铁类为最进化的种类。

It indicates that the different parts of the cattle-egg stone samples in different colours all mainly compose of pyrophyllite, coexisted by two kinds of polytype of monoclinic and triclinic pyrophyllite, and the average crystal structural formula is Al4.04 Si7.89 Al0.11O204. The aggregation of pyrophyllite arranges with no direction, and the crystal size of the single pyrophyllite crystal in the weathering skin is a little bigger than that in the basal part.

结果表明，不同颜色牛蛋石样品的不同部位皆以叶腊石为主要成分，并以叶腊石的单斜和三斜两种多型共存，其平均晶体结构化学式为Al4.04[Si7.89Al0.11O20]4；其叶腊石集合体呈无定向排列，风化皮中叶腊石单晶的粒度略大于基体中的。

From the tests,we have obtained some structural variant features related with salt resistance and demonstrated the successful introduction of Rhizophora apicularta DNA into tomato.This thesis contains two parts. In the first part,the morphological and anatomical structures of the leaves were investigated. As to the morphology,some difference between control and transformed tomato were found. The leaf dimensions of the transformed tomato with unextended leaves were smaller than that of control. These structure changes should help to decrease the evaporation of water effectively and release the physiological drought resulted from saline.

本实验分两部分：第一部分、对转化番茄的形态及细胞显微结构进行观察与分析，实验表明转化番茄形态与对照相比有明显的变化，其叶面积变小，叶形收拢，这种结构可有效地减少水分的蒸发，缓解由盐胁产生的生理干旱；组织解剖结构结果显示，耐盐番茄在细胞结构上发生了明显的变异：其气孔器倾向下陷，表皮毛增多，叶脉微管组织不发达，微管束周围出现增多的贮水细胞，叶缘及其它部位表面分化出大型的多细胞分泌型结构，这些结构与转化番茄后代较强的耐盐能力有关。

Young thalluscells of low development are easy to dedifferentiate and grow intoseedings directly,while mature thallus cells have to releasemonospores to form seedings through a stage of multicellular groupfor dedifferentiation.Old thallus,mainly of productive cells,releasecarporspores to form conchocelis at last.

幼嫩的叶状体细胞，由于其分化程度低，易于脱分化而直接长成细胞苗；成熟的叶状体细胞，要经过多细胞团这样一个脱分化的阶段，然后放散单孢子成苗；而老叶状体以生殖细胞为主，只能放散果孢子，最终长成丝状体。

The Filicales is much the largest living group of ferns, and they normally have large spirally arranged leaflike fronds derived from lateral branches of the main axis, some or all of which bear sporangia on their margins or undersurfaces.

薄囊蕨纲是现存蕨类植物中数量最多的一个类群，他们通常具有很大的、螺旋状排列的、从主轴的侧枝上形成的叶（巨型叶 MEGAPHYLIS ），其中一部分或绝大多数都是在叶边缘或背面产生孢子囊群。

The physiological and biochemical resistant mechanism of tea cultivars to tea brown blight caused by Guignardia camelliae. Making use of the mensuration of spectrophotometric analysis to study the enzyme activity of Peroxidas, Polyphenol Oxidas, Catalas, Phenylalamine Ammenia-lyase. The result showed that there was definite difference to the metabolic rule of defence enzymes activity in the annual leaf tissue of the resistant and susceptible cultivars after infecting.

茶树抗云纹叶枯病的生理生化机理研究利用分光光度计对茶树叶片中过氧化物酶、多酚氧化酶、过氧化氢酶，苯丙氨酸解氨酶的活性进行了测定分析，结果表明：感染茶云纹叶枯病菌前后，抗病品种和感病品种当年生成叶中防御酶活性变化规律存在一定的差异。

Results The lesion located at the basal segments of left lower lobe in 9 cases (90%), furthermore, 7(70%) at the posterior basal segments; The remainder 1 case (10%) was found at the posterior basal segment of right lower lobe; The lesion present as multiloculated cyst containing fluid and/or air in 7 cases(70%) without contrast enhancement of cyst wall, 3 cases (30%) presented as irregular mass with moderate enhancement, in which bronchiectasis with mucous impaction, calcification or cyst containing fluid may be seen; MRP, MIP and VR reconstructions showed anomalous branches arising from descending aorta in all 10 patients(100%) with draining into left atrium via pulmonary vein,which was consistent with surgery; Ipsilateral hilar lymphadenopathy was demonstrated in 7 cases (70%).

结果 9例（90％）病灶位于左下叶基底段，其中7例（70％）位于左下叶后基底段，1例（10％）位于右下叶后基底段；7例（70％）病灶表现为含液/气的薄壁多房囊腔，增强后囊壁无明显强化，3例（30％）表现为不规则团块，增强后有中等强化，其内有粘液嵌塞的扩张支气管，也可有钙化或液性区；MPR、MIP及VR等三维重建显示10例（100％）均为降主动脉发出异常分支供血，并通过肺静脉回流入左房，血管显示情况与手术相符；7例（70％）患侧肺门淋巴结有增大。

Provide a variety of works all the year round green with Miao Miao and Jian nursery; the main varieties are: Cedar H50-1000CM; Shu cypress H50-400CM; Longbai H50-400CM; Da-Yeh vicaryi §0.5-8CM; Canton White Magnolia §0.5-15CM; H50-400CM; yellow Purple Magnolia §0.5-6CM; Euonymus P20-150CM; Liriodendron chinense §0.5-10CM; metasequoia §3-20CM; Duzhong §3-20CM; Pinus thunbergii H200-700CM;§5-15CM;÷°P15-120CM; Shu cypress ball P30-150CM; Longbai ball P20-150CM; Pittosporum P30-150CM; Photinia H50-150CM; P40-150CM; purple leaves Lee §0.5-6CM; Ziwei §1-5CM; Maple D1-6CM; camphora §1-20CM; Beech §4-15CM; massoniana §4-20CM; addition Ligustrum vicaryi;ìé; safflower Following the wood; Hibiscus; bauhinia; poplar; Act Green; seeds Buxus; cherry; Guihua; willows; more than 50 varieties of bamboo and Manila; such as tall fescue lawn.

常年提供各种工程绿化用苗及建苗圃苗；主要品种有：雪松H50-1000CM；蜀桧H50-400CM；龙柏H50-400CM；大叶女贞ф0.5-8CM；广白玉兰ф0.5-15CM；H50-400CM；红黄紫玉兰ф0.5-6CM；大叶黄杨P20-150CM；马褂木ф0.5-10CM；水杉ф3-20CM；杜仲ф3-20CM；黑松H200-700CM；ф5-15CM；洒金柏P15-120CM；蜀桧球P30-150CM；龙柏球P20-150CM；海桐P30-150CM；石楠H50-150CM；P40-150CM；紫叶李ф0.5-6CM；紫薇ф1-5CM；红枫D1-6CM；香樟ф1-20CM；榉树ф4-15CM；马尾松ф4-20CM；此外还有金叶女贞；红叶小檗；红花继木；木槿；紫荆；意杨；法青；瓜子黄杨；樱花；桂花；垂柳；竹子等50多个品种及马尼拉；高羊茅等各类草坪。

Active brain regions of awake word＞anesthesia word in group D were observed in left thalamus,precentral gyrus,anterior cingulate and right basal nucleus.

浅麻醉组所激活的脑区较多，为两侧额叶、顶叶、颞叶和左枕叶、左基底核。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐