半干旱黄土区沙棘的形态解剖学特性研究

Study on the Characteristic of Anatomy of Seabuckthorn on the Semiarid Loess Region

1994～ 2 0 0 2年先后在黄土高原半干旱区的安塞、吴旗县进行了沙棘形态解剖学特性试验研究。结果表明 :沙棘叶具发达的表皮毛、较厚的角质层和发达的栅栏组织细胞 ,对大气干旱有强的适应性。根的周皮薄壁组织发达 ,细胞和细胞间隙较大 ,持水力强。沙棘由于具耐旱和节水型御旱的形态解剖和水分生理生态学特性 ,使沙棘耐旱、抗寒、耐水湿 ,在干旱、半干旱地区适应性强 ,并具有较高的生态、经济效益。以上研究为沙棘在黄土高原半干旱区大面积荒山抗旱造林 。

These experiments were carried out at Ansai, Wuqi on semiarid region of the Loess Plateau from 1994 to 2002. The characteristics of morphology and anatomy were observed and studied. The results showed that seabuckthorn leaf has flourishing epidermis hair, thicker cuticle and developed palisade tissue. Its adaptability is stronger to atmospheric aridity on semiarid loess region. The root has large to cortex parenchyma cell and crevice of cell. So the water-holding capacity of the root is stronger. Its characteristic of morphology anatomy and water physiological ecology shows that it has the drought resistance and capability of economizing on water. These characters are the reasons it have higher ecological and economic benefits. This study provides scientific basis for forestation of seabuckthorn and speed harnessing harness barren hills on semiarid loess region.