叶绿素

This paper has studied the physiological and biochemical changes during the period of forming strong buds of tree peony, and expect to provide academic basis for extending its view value and economic benefit . The main results are as the following:1 Under the field condition, Characteristics of photosynthesis of tree peony are very regular. From before blooming to the prophase of abducting buds that after blooming ,that is April,May and June,the net photosynthetic rate of tree peony is higher than the other period .It indicates that this period is very important for accumulating photosynthetic products of tree peony . So, if we want to get quality flower of tree peony ,it is very important to strengthen the management of tree peony cultivation and to ensure provide the fertilizer and water.2 From the middle ten days of June, with the time elapsing and with the environment conditions worsening, the characteristics of photosynthesis of tree peony decline deeply. But it is different among different tree peony breeds. For example , cv. Wu Long Peng Sheng can also has higher net photosynthetic rate, it indicates that cv. Wu Long Peng Sheng is super than the other two tree peony breeds when adapting the environment conditions and cv. Wu Long Peng Sheng has wide prospect to extend .3 The main factors of effecting the characteristics of photosynthesis are stomatal factor and non-stomatal factor ,that is the ability of photosynthesis of leaf cells. Under the environment of high light intensity in midsummer, if overshadow tree peony properly, then it can slow the declining of chlorophyll content, and increase the net photosynthetic rate and benefit for the accumulating of photosynthetic products.4 The content of soluble sugar in the root of tree peony is the highest among different organs during the period of forming strong buds . According to analyse ,we believe that the soluble sugar will compose starch then, and provide the solid base of material for the growth and development next year. It provide us strong academic basis of adopting the method of cultivating root and protecting root under thefield environment conditions .In other words ,it will help to increase the health level of the whole plant of tree peony and will be beneficial to forming quality tree peony flower if we strengthen the management of root. 5 To tree peony, the endogenesis hormone is important for its growth and development .In the prophase ,that is about the blooming of tree peony and the mid-summer ,IAA and ZR contents are higher and GA content is lower and its changes are very little, and the content of ABA is decreasing . This indicates that IAA and ZR act the important promote function for growth and development of tree peony in this period, and the function of GA is not important. Bur in the period of anniversary senescence of tree peony , the content of IAA and ZR begin to decrease ,while the ABA content has a certain rebound .T

本研究对几个牡丹品种壮芽形成过程中的某些生理生化变化做了研究，以期了解牡丹生长发育过程中生理生化的变化规律，探讨大田栽培条件下提高牡丹花质量的栽培措施和管理技术，为提高牡丹的观赏价值和经济效益提供理论依据，结果如下：1 大田栽培条件下，牡丹光合特性在生长发育过程中表现出极强的规律性，牡丹各品种的光合速率从牡丹开花前，到牡丹花谢后的花芽诱导期前期（6月10日之前），也就是在4、5、6月份，各牡丹品种的净光合速率相对与其他时间都维持在比较高的水平，这说明，在这段时间，是牡丹光合产物积累的重要时期，因此，要保证得到高质量的牡丹花，在这段时间加强对牡丹的栽培管理，保证这个时期的肥水供应十分重要。2 从6月中旬后，随时间的推移，环境条件的恶化，牡丹的光合性能剧烈下降，但是不同牡丹品种间仍有差异，比如，乌龙捧盛仍可维持较高的光合水平，这说明了乌龙捧盛这个牡丹品种对于环境的适应性较之其他牡丹品种高，有着广泛的推广前景。3 影响牡丹光合性能的主要因子是气孔因素和非气孔因素即叶肉细胞的光合能力，在盛夏高温高光强的环境条件下，对牡丹进行适当遮荫，能缓解牡丹叶绿素水平的下降，适当提高Pn，有利于光合产物的积累。4 可溶性糖在牡丹各品种的壮芽形成过程中，根中可溶性糖的含量在牡丹各部位中始终维持最高水平，分析认为这些可溶性糖在根系中进一步合成淀粉等储藏性物质，为来年牡丹的生长提供雄厚的物质基础，这为我们在大田栽培条件下对牡丹采取养根护根的栽培措施提供了有力的理论依据，即在大田栽培条件下，加强对牡丹根系的管理，有助于提高牡丹整株的健壮程度，有益于形成高质量的牡丹花。5内源激素对牡丹的生长发育调节作用是十分明显的，在前期，即开花前后和盛夏，IAA和ZR含量维持在比较高的水平，GA含量低且变化不明显，ABA含量逐渐降低，说明了IAA和ZR对牡丹在这段时间内的生长发育起到重要的促进作用，GA的作用不是很明显，ABA可能在高温高光强下有明显的升高，也说明了ABA的确有一些促进作用，但是到了牡丹周年衰老期，IAA和ZR的含量开始下降，ABA含量却有了一定程度的反弹，说明了IAA和ZR的作用开始降低，ABA起到了促进衰老的作用

It was showed the chlorophyll content of winter wheat and summer corn would increase with N-Fertilizer and marure increasing, and the functions were expressed by equation

结果表明：随着氮肥或有机肥施用量的增加，无论是冬小麦还是夏玉米，叶片叶绿素含量均会增大，与氮肥和有机肥的施用量的函数关系分别表达为

Attacked by surface active agent, ocean micro-alga will be change their coloring matter for photosynthesis under the contamination of surface active agent, to result much phaeophytin-a.In addition, have assayed the surface property of the four kinds of surface-active agent.

在此基础上初步研究了表面活性剂对海洋微藻的毒性机理，找到了表面活性剂对海洋微藻细胞的攻击点是藻类的细胞膜，并且胁迫状态下的藻类细胞的光合色素组成发生变化，产生大量的脱镁叶绿素a，影响藻类的光合作用效率。

Under different light intensity, chlorophyll content, net photosynthetic rate, and quality of Taraxacum mongolicum were studied.

以蒲公英为材料，研究了光照强度对其叶片叶绿素含量、净光合速率及品质的影响。

The results indicated that with the increasing of storage time, the leaves etiolated, contents of crude-fiber increased, while vitamin C, chlorogenic acid decreased, nitrate contents up to the maximum at the 3th day after storage , then decreased gradually. Stored at 2℃, the contents of chlorophyll, vitamin C, chlorogenic acid were higher, nitrate and crude-fiber contents were lower. The lower of membrane permeability and MDA content, the higher activity of SOD significantly delayed senescence process and prolonged storage life of Taraxacum mongolicum.

结果表明：采后蒲公英随着贮藏天数的增加，叶片逐渐黄化，粗纤维的含量升高，维生素C和绿原酸含量下降，硝酸盐含量先升高后降低；2℃下贮藏能够使采后蒲公英具有较高的叶绿素、维生素C、绿原酸，较低的硝酸盐和粗纤维含量，较低的细胞膜渗透率、MDA含量和较高的SOD活性，显著地延缓其衰老进程，延长贮藏寿命。

The result showed that the chlorophyll content and Tm of different irrigation treatments were high in prophase and then reduced gradually in telophase of grain filling.

在池栽、遮雨条件下，利用植物效能分析仪研究了减少灌水次数对豫麦50灌浆期旗叶叶绿素荧光动力学参数及产量的影响。

The green leaves in the absence of chlorophyll, at the same time, other chemical pigments and thus apparent, so we can see more colors such as yellow and brown leaves.

树叶中缺少了绿色的叶绿素，与此同时，其它化学色素因而显现出来，所以我们多看到黄和褐等颜色的树叶。

The results showed that the effect of nitrogen topdressing stage on leaf area and leaf chlorophyll content and photosynthetic rate of wheat is significant; there are some significant differences between the treatments.

结果表明，追氮时期对小麦的叶面积及叶绿素含量和光合速率的影响显著，不同处理间均呈现一定的显著差异。

Through the design of AGP-test equipments and methods which could simulate the impact of input of exogenous nutrients on eutrophication, the evolution of algae and aquatic species extinction process in Miyun Reservoir under different environmental and nutritional conditions are simulated. Then the ratio growth rate in the three simulation stages are simulated and analyzed combining the numerical analysis software MATLAB 7.0. At last, the conclusion that in the three designed stage, the total phosphorus threshold which leads to a water bloom in Miyun is respctively 0.053mg/L, 0.062mg/L, 0.064 mg/L is educed. Based on the regression relationship of total phosphorus,chlorophyll-a, total nitrogen, and the transparency,we compartmentalized the evaluation standard level of eutrophication in Miyun Reservoir.

通过设计模拟外源输入对富营养化作用的AGP试验装置和方法，模拟了不同环境条件、营养条件下密云水库优势藻种演变和富营养化过程，结合使用MATLAB 7.0数值分析软件，对3期模拟时段的比增长率进行拟合分析，得出3期设计阶段密云富营养化发生的总磷阈值为0.053mg/L、0.062 mg/L、0.064 mg/L，再根据总磷与叶绿素a、总氮、透明度之间的回归关系，划分了密云水库富营养化的评价标准级别。

In this paper,the comparative studies on the effects of triazine herbicide Atrazine on seedlings growth,contents of chlorophyll and soluble protein,chromosome structure of root meristem,protein compositions of root meristems and chloroplast have been made in Oryza sativa.

比较研究了不同浓度三氮苯类除草剂对水稻幼苗生长、叶绿素及可溶性蛋白质含量、根尖分生组织染色体结构、分生组织和叶绿体蛋白质组分的影响。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。