地面辐射的意大利语

因为上有让那种生命生存的条件.

这个10大谁来评啊

说几个有名的吧，你觉得哪个名气大就是哪个

江泽涵、欧拉、数学之父─ 泰勒斯(Thales) 、 嘉当 、毕达哥拉斯 、 应用数学大师──欧拉 、欧氏几何的创始人──欧几里得 、划时代的科学巨人─牛顿、业余数学家之王──费尔马 、孙子巧解“鸡兔同笼”、吴文俊 、钱学森、 华罗庚 、青年数学家伽罗瓦、南北朝时代的伟大数学家祖冲之算、 程大位及其所著《算法统宗》、我国最早的女数学家班昭 、 李冶、 徐光启、朱世杰 、 陈建功、 杨乐、杨辉、熊庆来、王元、苏步青、僧一行、程大位、陈省身、 陈景润、数学神童维纳、学成绩不佳的数学大师─埃尔米特 (Hermite)、希尔伯特、数学家：R.E.博切尔兹、 S.P.诺维科夫、博学而另类的代数几何学家 A.格罗腾迪克、 有史记载的第一位女数学家--希帕蒂娅、芒德勃罗、罗巴切夫斯基、约翰·纳什、卡当、保罗·厄多斯 (Paul Erdos)、埃瓦里斯·迦罗瓦、桑雅·卡巴列夫斯基、一位仁道主义的数学家─阿涅泽、学成绩不佳的数学大师─埃尔米特、数学奇才、计算机之父──冯·诺依曼

、数学之父─塞乐斯 (Thales)、高斯、中国古代科学史上的坐标──沈括、中国数学界的伯乐──熊庆来、业余数学家之王──费马、数学奇才──伽罗华、解析几何的创始人──笛卡尔、第一个算出地球周长的人──埃拉托色尼

Sunflower (English: Sunflower Helianthus annuus scientific name: Japanese name: ヒ マ ワ リ), alias xiangyanghua, is a type of up to three meters of large scale annual compositae Sunflower plant. The disc inflorescence can kuanda 30 centimeters. Because the inflorescence with sun rotating the name. Sunflower stems can last for 3 meters, the composite can reach 30 centimeters.

Morphological characteristics

1 was born in herb, 1 ~ 3 meters high. (for hybrids also have half a metre high. Vertical stem, stout, rounded edges and corners, be more white thick hard wool. Leaves alternate, usually heart shape

Ovate or ovoid, apex acuminate, sharp ashdod or a gileadite from 3 arteries and veins, with thick serrated edge, two sides coarse, coat, having a long handle. Inflorescence, great, 10 ~ 30 cm in diameter, solitary in stem top or branch end, often downward inclined. Total bracts multilayer, leaf qualitative, overburden tegular arrangement, by long horklumps, summer flowering, inflorescence edge born yellow tongue fluted, without fruit. Inflorescence of central for both sexes GuanZhuangHua, brown or purple, strong. Fruit an achene, obovate or oval oblong, slightly compressed pressure, peel woodiness optimization, grey or black color, commonly known as sunflower seeds. Sexual xi warm, drought. Originated from North America, all over the world are cultivated.

Sunflower component parts

Sunflower plant by roots, stems and leaves, flowers, fruits five parts. (a) the root sunflower, lateral root and commercial taproot regarding composition. Taproot acorns deep, it is commonly 100 to 200 centimeters; Lateral root from taproot horizontal direction on brought forth, grow. Lateral root grows on many regarding. Lateral root regarding bears the hair. Sunflower root developed in soil wide distribution and deep, including some 60% of the root distribution in 0 ~ 40 centimeters in soil. Sunflower root growth rate has been than stem fast, anxle before and after the formation of the fastest, root growth to seeds begin to maturity, root no longer grow, after he gradually wither. In addition, in suitable conditions can grow large amounts of water roots (like corn gas root). (2), erect stems stalks circular rough surface and have bristles. Stem by cortex, xylem and spongy marrow component. Growth anaphase, stalks, and stems of woodiness hip is formed within the hollow. Sunflower, the embryo stem with green, Dan zi, deep purple etc, it is an important symbol of seedling recognition varieties. Stem height, different types of varieties, the same breed bigger differences, height by sowing and cultivation condition the influence, difference is very big also. Stem's growth rate from budding to flowering to grow the fastest, at the height of the total height about 55%, later growth slowed, only 5% or so. Sunflower branch of the sex, one kind is decided by genetic after one kind is caused by environmental conditions. (3) leaves sunflower leaves into cotyledons and true leaf. Cotyledons couple. True leaf in the stem bottom 1 ~ 3 quarter is often opposite, above is alternate. True leaf is relatively large, hairy, and petiole bears the short and hard bristle, and reviewed a waxy layer. Leaf number for varieties vary, precocious kind of general for 25 ~ 32 pieces, mature for 33 ~ 40 sheets. Stem the lower leaves in before blossomming food-making, main supply root growth, when its function basically end flowering. Upper the blade manufacture nutrient main supply anxle prompted seed formation. (4) flower sunflower for inflorescence, bears in the stem apex, commonly known as the plates. Its shape is convex, flatten and concave under three types. There are two anxle flowers, namely tongue fluted and GuanZhuangHua. Tongue fluted 1 ~ 3 layers, bears the anxle around the edge, for asexual flowers. Because of its color and size varies, there are varieties, weak yellow, orange and purple, have deceived insects come flower-counting pollination effect. GuanZhuangHua, located in tongue fluted inside, for both sexes flowers. Corolla color has yellow, brown, dark purple, etc. (5) fruit, fruit for fruit an achene habit called seeds. Fruit including peel, kind of skin, cotyledons and embryos four parts. Edible type seeds longer, peel black and white stripe majority, peel thick, accounting for approximately seeds weight of 40%, and 1000-grain weight of 100 to 200 grams. Oil is short, with type seeds for black rind, thin skin, about seeds weight of 20% ~ 30% and 1000-grain weight 40 ~ 110 grams.

Recorded in the ancient

Sunflower about in the Ming dynasty introduced to China, and now know the earliest recorded sunflower literature for the Ming dynasty people WangXiangJin with the qunfang spectrum "(1621), the book there's" sunflowers "a, only in the HuaPu three * chrysanthemum" in the attached "zhangs chrysanthemum"; the original is as follows: "zhangs chrysanthemum - name this zavan chrysanthemum - name meet Yang flower, stem long more than 100zhang Kennedy, such as bamboo culm coarse linen, how straight inproper born, although have branches, and only give birth to a large flowers such as dish dishes, single color yellow heart all make life such as the honeycomb shape, to fall gradually purple black and strong, take the son of very easily, flower toxic can abortion". "The name of the dispute", in the WenZhenHeng ChangWu volunteers "(about 1635 years). 1820 XieFang in the flowers and trees small ambition "in speech is full of sunflower, already but viewing, and edible. Explain sunflowers in China widely planted.

The poet's sunflower psalm

Successive poet, write a sunflowers psalm opposite less, every scholarships-from and, more loyal thought: "reposing in flowers for beauty, men have coring dispute. Gu loyal servant, if such a virtuous adjectivals." Lee Zan of these four poem, can be represented. The formation of his poems in summer the guest has: "no more LiuXu because of the wind, but the sunflower dispute pour." Xu HuaMing volunteers tells of personality. "Sunflower", Canon out dispute pour the three · Chen WangZhi biography: "if the sloping leaves, kwai herb sun although not for the return of light, but eventually to those cheng also." Du fu also has "kwai herb pour the sun, petrophysical property solid mo takes" verse. Qi chuas "sunflower" or "most frets point in Chen Dan, not for setting the shadow will move." LiuChangQing "to sing wall Yin kwai" cloud: "here often WuRi, qing qing alone in Yin. The sun is not inferior, the partial weiyuan." For loyal sunflower justifications, was so thoughtful.

Growth habit

Sunflower four seasons are acceptable, mainly in summer and winter seasons give priority to. Flowering can reach two weeks or more. Sunflower except appearance resembles the sun outside, her flowers bright and easy, suitable for viewing place adorn, her seeds have economic value, not only can finish popular sunflower seed, more but pre-pressed low cholesterol senior edible oil arrived. Sunflower varieties can be divided into general ornamental USES "breed or" edible "varieties, general ornamental plants with varietal character for more

特点是向着太阳，从早到晚直到看不到太阳为止。向阳的精神让人佩服。

拓展资料：向日葵又名朝阳花，因其花常朝着太阳而得名。英文名“sunflower”虽与其向日特性多少有些关联，名称主要还是来源于其金色花朵开放时酷似骄阳的形态，于16世纪至17世纪间从拉丁语中的太阳花——“flos solis”借译而来。向日葵的法语，意大利语和西班牙语名称分别为“tournesol”，“girasol”和“girasol”，同汉语名称一样，也是基于“向日”这一特性来命名的。

向日葵四季皆可，主要以夏、冬两季为主。花期可达两周以上。向日葵除了外型酷似太阳以外，它的花朵明亮大方，适合观赏摆饰，它的种子更具经济价值，不但可作成受人喜爱的葵瓜子，更可榨出低胆固醇的高级食用葵花油。向日葵的品种可分为“一般观赏用”品种或“食用”品种，一般观赏用品种特征为植株较矮小，通常不超过半公尺，因此适合栽种于盆栽中。

食用品种则植株较为高大，种于一般露天苗圃土壤中，可长至2公尺以上。向日葵生长相当迅速，通常种植约两个月即可开花，其花型有单瓣、重瓣或单花、多花之分，花期相当长久可达两周以上。

向日葵植株高大，叶多而密，是耗水较多的作物。它的吸水量是玉米的1.74倍。但因其生长发育多与当地雨热同步，水分供求矛盾不突出。向日葵不同生育阶段对水分的要求差异很大。从播种到现蕾，比较抗旱，需水不多，仅为总需水量1.9%。而适当干旱有利于根系生长，增强抗旱性。现蕾到开花，是需水高峰，需水量约占总需水量的43%。

此期缺水，对产量影响很大。此阶段恰逢雨量较多，基本上能满足向日葵生长发育对水分的需要。如过于干旱，需灌水补充。开花到成熟需水量也较多，约占总水量38%。如果水分不足，不仅影响产量，而且还降低油脂含量。

向日葵为短日照作物。但它对日照的反应并不十分敏感。比如在天津市的日照条件下，无需特殊处理，都能正常开花成熟。向日葵喜欢充足的阳光，其幼苗、叶片和花盘都有很强的向光性。日照充足，幼苗健壮能防止徒长；生育中期日照充足，能促进茎叶生长旺盛，正常开花授粉，提高结实率；生育后期日照充足，子粒充实饱满。