从显微水平和超微水平对杂交水稻汕优桂９９的新式旱育、传统旱育和半水育三种方式秧苗叶片的表皮、叶肉和叶脉进行观察，结果发现：表皮细胞外壁厚度、硅质乳突的数量、泡状细胞组相对大小、气孔器的密度；多环叶肉细胞数量；叶脉面积相对大小、叶脉上下方机械组织的细胞数等，均是新式旱育秧苗的叶片最大，传统旱育的次之，半水育的最小。观察结果从解剖学方面说明了新式旱育秧苗素质好的原因所在 The epidermis, mesophyll and veins of seedlings of three types of hybrid rice, Shanyougui 99, in arid, traditional and semi-arid, were observed at the microscopic and ultrastructural levels. The results showed that the thickness of epidermal cell wall, The number of papillae, the relative size of vacuolar cells, the density of stomatal apparatus, the number of polycyclic mesophyll cells, the relative size of leaf veins, the number of mechanical tissues in the upper and lower veins, The second dry cultivation, semi-aquatic minimal. Observations from the anatomical aspects of the new type of nursery seedlings good quality reasons