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So the variety of L21 andLainong9217 should be planted in dry land of high yield,and the variety ofLainong8834 and YD27 in dry land of middle yield,and gaining high yieldand high efficiency.2 The researches on the flag leaf and root system senescence after anthesisand yield were studied in dry land wheat of high yield,the activity of super-oxide dismatase and catalase、and the soluble protein content、Cytokinincontent in wheat flag leaf and root system after anthesisand Cytokinincontent in grain decreased slowly,and the content ofmalondiadehydeand the Abscisic Acidcontent in wheat flagleaf and root system and the Abscisic Acidcontent in grain increasedslowly,meanwhile keep higher root vigor and the root vigor decreased slow-ly,the result would be benefit to delay the senescence and gain high yield.3 The effects of soil thickness on the senescence of flag leaf and root sys-tem、nitrogen distribution and utilization and water consumption law andyield in dry land wheat had been studied in soil column and field.

通过大田条件下旱地高产小麦耗水规律及产量变化的研究表明,4个品种耗水量、产量、水分生产率、籽粒产量中来自花后光合器官输送的比例及综合效益评判结果均以鲁麦21和莱农9217为高,而莱农8834和烟D27则与此相反,因而在旱地高产麦田应以种植鲁麦21和莱农9217为主,中产麦田以莱农8834和烟D27为主,以获得高产高效。2在旱地高产大田对鲁麦21与烟D27两品种花后旗叶、根系衰老及产量变化进行了研究,认为花后旗叶与根系SOD、CAT活性、可溶性蛋白质含量、i-PAs含量及籽粒iPAs含量降低缓慢,MDA含量、ABA含量及籽粒ABA含量增加缓慢,同时保持较高的根系活力且下降缓慢,有利于延缓衰老,形成高产。3土层厚度对旱地小麦花后衰老、氮素分配利用及产量的影响进行了研究,随土层厚度加深,根系活力、根系与旗叶SOD、CAT活性及可溶性蛋白质含量增加,MDA含量减少,土层愈薄,其根系与旗叶衰老愈快。

The results showed that the 50% leaf removal could increase the yield of sound boll by 24.4% that suggested the happening of overcompensation. The 25% leaf removal had no influence on cotton plant height and protein content in leaves, suggesting the 25% leaf removal in standard falling into the category of growth redundancy, but the climax in protein content in cotton leaves postponed about one week.

在棉花盛蕾期,用剪刀剪除棉花标准叶面积的25%和50%,模拟田间害虫的食叶危害程度,结果显示:50%去叶处理可使棉花成铃数增加24.4%,产生超补偿现象。25%去叶处理在短时间内对棉花的株高和叶中蛋白质含量都没有影响,植株株型亦无大的变化,表明25%叶面积属于生长冗余范畴。

The lotus flower, the June goddess of flowers of Chinese, is display her unique life time prettiness in the light drizzle,"lightly the natural intelligence be thin and beautiful, embellished garden court and pond may also pity":The Zhuo Zheng court"four sides lotus flowers three sides willows" in the court, the fragrance smelling cross stealthily the art garden, just like women in green leaf with aroma and red blossom as dancing in the courtyard, just like to hug lotus women 3000,In TuiSi garden also have colden redolence fly up a poem ……a sunny day inside, looking up like the pond covered with the green leaf, covered but young woman grow up from a colourful lotus, rain stopped afterwards to visit the pond in the court, playing a crystal pearl in the jasper leaf dish ……the ancients words:"Spring outing to enjoy the sweetness of landscape no more than at the moss green step,but to the flowers prosperous at the lotus", truly and indeed .

秋荷残塘,不见你的踪迹淡化的,是馨香的幽会强化的,是恍惚的别离荷花,中国人的六月花神,在细雨中正展示着她的绝世秀色,"轻轻资质淡娟娟,点缀园池亦可怜":拙政园"四壁荷花三面柳",艺圃池中香暗度,怡园正绿香红舞、拥莲媛三千,退思园也有冷香飞上诗句……晴日里,好似水上张青盖,罩却红妆吐彩莲,雨后来池看,碧玉盘中弄水晶……古人云:"游莫美于春台,花莫盛于芙蓉",诚不虚也。

F. pumila had the strongest capacity to adhere to walls, and it formed a quite good covering landscape by means of a large quantity of adventitious roots. Furthermore, it was tolerant to shade, and the effects of shading on its growth and landscape covering were very small. P. heterophylla had the rapidest growth and covering speed, and it adhered to walls by adhesive discs, but was defoliated in winter or after a long period of shading. The other three vines climbed walls using adventitious roots, and their adhering capacities were all relatively poor. However, E. fortunei still formed a relatively good covering due to its rapid growth and emerald leaf colour. After shading for four months, leaves of F, pumila, C. grandiflora, and P. serpens became thin, and accordingly their leaf weight per unit area significantly decreased. Shading also reduced chlorophyll contents of C. grandiflora and E. fortunei but enhanced those of F. pumila and P. serpens, It did not influence leaf thickness, leaf weight or chlorophyll content of P. heterophylla. Whether shaded or not, the relationship between Pn and PAR for each species could be expressed as y=alnx+b, and furthermore there was a significant (P.01) correlation between them. Pn and LCP values for all five lianas also significant (P.01) correlated. Shading reduced LCP values of P. heterophylla, C. grandiflora and E. fortunei but increased LSP of F. pumila.

结果表明,1薛荔对墙体附着力最强,它依靠大量的不定根吸固在墙体上,形成很好的覆盖效果,而且薜荔耐荫,遮光对其生长与覆盖的影响很小;爬墙虎的生长与覆盖速度最快,它主要依靠吸盘吸固墙壁,但在冬季或长时间遮光后出现明显落叶现象,影响其覆盖景观;其他3种都依靠不定根沿墙面攀援,附着力相对较差,但扶芳藤由于生长较快,叶色终年保持翠绿,也能形成相对较好的覆盖效果;2遮光4个月后,薛荔、凌霄和蔓九节的叶片变薄,相应地这3种植物单位面积的叶片重量都显著减轻;遮光还使凌霄和扶芳藤的叶绿素含量减少,使薛荔和蔓九节的增加,但对爬墙虎的叶片厚度、叶重和叶绿素含量都不产生明显影响;3无论遮光与否,5种植物的Pn与PAR之间的关系都可用y=alnx+b表示,并且都达极显著相关,Pn与光补偿点之间亦呈极显著相关;遮光还使爬墙虎、凌霄和扶芳藤的LCP下降,并使薛荔的光饱和点升高。

Different from the two-leaf-spring structure in the market right now, we applied one-leaf-spring as the suspension system. One design is the leaf spring of single cantilever beam and the other is the leaf spring of double cantilever beams.

有别於一般市面双弹片架构,本文使用单弹片作为悬吊系统,一款为单悬臂梁连结镜座;另一款为双悬臂梁连结镜座。

This shows that only from Rm perspective, Tetranychus urticae Koch in the four host plants and foods diet for the adaptation to the best in the kidney beans, the second is in peach leaf,the third is in apple leaf,the last on is in balsamine leaf.

这表明只从r_m角度来考虑,二斑叶螨在这4种寄主植物上的适应度和嗜食性以在菜豆上最好,在桃叶上较好,在苹果上次之,在凤仙花上最差。净增长率R0表示每雌经历一个世代可生产的雌性后代数。

Results showed 172 DH plants in 2006, 230 DH plants in 2007 were obtained, 275 plants had been domesticated in 2008.Some DH regeneration plants could transform into leaf mutants. From 2006 to 2007, 8 wrinkledness leaf mutants were gotten. The highest rate of getting mutants was 2.29 %. 2 mutant plants had gotten seeds. The leaf mutants mainly showed wrinkledness in the surface of preceding leaves at early stage. Then the wrinkle leaves could transfer to normal ones and some also keep the wrinkledness later with their growth.

结果表明,CGMCC№2553具有胚胎发生能力,2006年获得172株DH再生植株,2007年获得230株,2008年驯化275株;定植到日光温室中的DH再生植株有些会转变为叶片突变体,2006~2007年共获得8株叶片皱缩突变体,最高获得率为2.29%;目前已获得2份突变体的自交种子;叶片突变体主要表现:生长初期叶片表面皱缩呈瘤状,随着生长的进行,一些皱缩的叶片转变为正常,有的则依然皱缩。

But there existed significant difference in the form of leaf base , leaf length, leaf width and micro-morphology characteristics of the leaf epidermis(the cell number of the adaxial epidermis and abaxial epidermis, the stomal length,the stomal width,the stomal density).

结果不同叶型的冬凌草其表皮细胞的形状、气孔类型均相同,但其叶基形状、叶长、叶宽、叶表皮微形态特征(上表皮细胞和下表皮细胞的数目、气孔长度、宽度及气孔密度等)存在明显的差异。

The standard deviation of factor, regerssion equation and correlation coefficient between estimated and actual leaf area all demonstrated the adequency of the model The leaf length and width were used to calculate total leaf area per plant for Phalaenopsis white hybrid grown in phytotron at various day/night temperature After 9-month experiment, plants grown at 30/25℃ increased 1.4 and 3.8 times total leaf area compared with plants grown at 25/20℃ and 20/15℃, respectively.

由於检定有共同斜率之存在,故不计大小可求得共同估值的0.825,并由常数之变异范围、叶面积估值与实际叶面积之廻归方程式及相关系数确知其适用性,以叶面积估算决比较不同温度对白花蝴蝶兰生长之影响,则不论叶幅、叶面积增加量、长叶率均以日/夜温30/25℃增加量最大,其叶面积增加量为25/20℃之1.4倍,20/15℃之3.8倍。

According to the datas from field investigation, lab experiment and slope run-off plot observation, the hydrologic functions of forest canopy, lower shrub, litters and soil layers have been studied. The canopy precipitation interception characteristic of different vegetation types have been analized. The results indicate that the broad-leaf forests and coniferous and broad-leaf mixed forests are better than phyllostachys pubescens forests and shrubs in canopy rainfall interception. And the litters water-holding ability of broad-leaf forests and mixed forests are higher than others. And the soil water-holding and infiltrating ablility of broad-leaf is good.

根据野外调查、试验及坡面径流小区的观测数据,研究了库区主要类型植被林冠层、灌草层、枯落物层和土壤层的水文功能,分析了不同降雨条件下不同类型植被的林冠截留特征,指出在林冠截留方面阔叶林、针阔混交林比楠竹林、灌丛的截留能力强;分析了库区主要类型林地枯落物层的水文功能,研究结果表明:阔叶林林地枯落物的持水能力普遍高于针叶林,而混交林枯落物的持水能力要比纯林大;林地土壤层的水文功能剖析表明:阔叶林林地土壤的持水性能较强,其林地土壤的入渗性能较好。

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The split between the two groups can hardly be papered over.

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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

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