水稻出叶有一定的规律。谷种发芽时,先出芽鞘,不含叶绿素,也没有主脉。从芽鞘裂孔中抽出的第一叶只有叶鞘,没有叶身,称为不完全叶。以后再长出的叶,是有叶身的第一完全叶。计算主茎叶数,一般以第一完全叶作为第一叶,记作1/0,顺序为2/0,3/0等。叶片的出生和根、蘖、茎、穗等器官 Rice leaves certain rules. Seed germination, the first germination sheath, non-chlorophyll, there is no main vein. The first leaf, drawn from the bud of the bud, has only a leaf sheath, no leaf blade, and is called incomplete leaf. After growing out of the leaves, there is the first complete leaf leaves. Calculate the number of stems and leaves, usually the first complete leaves as the first leaf, recorded as 1/0, the order of 2 / 0,3 / 0 and so on. The birth of leaves and roots, tillers, stems, spikes and other organs