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向日葵属于菊科作物,因为向日葵有向日性而得名,它还有一些名字,叫转日莲、向阳花、葵花。是属于一年生草本油料作物:种子含油量高,油质好,主要用于榨油,也可嗑食。副产品(杆、叶等)是食品、医药、轻工业的原料,也可做饲料。世界上有40多个国家种植,16世纪末或17世纪初传入中国。中国向日葵栽培面积较大的有20个省、市(自治区)。吉林省面积最大,占全国总面积23.7%,其次是内蒙古自治区。最新研究发现,向日葵之所以向着太阳转,是因为向日葵体内有一种奇怪的生长素,这种生长素一有太阳光照射,就会躲到背光的一面:生长素到那面,就会刺激那面的生长细胞迅速增殖,那一面就生长发育的快;生长的快的一面就迫使向日
Sunflower is an Asteraceae crop. Because sunflowers are named after the sun, it has names like sunflowers, sunflowers and sunflowers. It belongs to the annual herb oil crops: high oil content of seeds, good oil quality, mainly used for oil extraction, but also can feed. By-products (rods, leaves, etc.) are food, medicine, light industry raw materials, but also do feed. More than 40 countries are planted in the world and introduced to China in the late 16th or early 17th centuries. There are 20 provinces and municipalities (autonomous regions) with a large area of sunflower cultivation in China. Jilin Province has the largest area, accounting for 23.7% of the total area in China, followed by Inner Mongolia Autonomous Region. The latest study found that the reason why the sunflower turn toward the sun, because the sunflower body has a strange growth hormone, the growth hormone as soon as the sun shines, will hid the backlight side: auxin to that side, it will stimulate The rapid growth of surface cells, proliferation of growth and development on that side of the fast growing fast side forced to Japan