论文部分内容阅读
一、生物学特点1.外形特点。荔枝为常绿乔木,树高通常10米左右,较高的可达15米或更高。小枝圆柱状,褐红色。叶柄长10~25厘米,小叶2~3对,少部分有4对。树叶薄革质或革质,披针形或卵状披针形,长6~15厘米,宽2~4厘米。果实卵圆形至近球形,长2~3.5厘米,成熟时果皮通常为暗红色至鲜红色,种子全部被肉质假种皮包裹。2.开花特性。荔枝是雌雄同株异花的树种,雌花和雄花着生在同一花穗上,开花顺序因花穗着生部位和性
First, the biological characteristics 1. Shape characteristics. Litchi trees are evergreen trees, usually about 10 meters high, up to 15 meters or higher. Branchlets cylindrical, maroon. Petiole 10 to 25 cm long, 2 to 3 pairs of leaflets, a small part of 4 pairs. Leaves thinly leathery or leathery, lanceolate or ovate-lanceolate, 6 to 15 cm long, 2 to 4 cm wide. Oval to nearly spherical fruit, 2 to 3.5 cm long, mature peel is usually dark red to bright red, the seeds are all wrapped in fleshy aril. 2 flowering characteristics. Lychee is a hermaphrodite tree species, female flowers and male flowers were born in the same flower, the flowering order due to the spike parts and sex