多花胡枝子在沙质条件下生态适应性研究

Study about Ecological Adaptability of Lespedeza floribunda to Sandy Soils

采用沙、壤土不同比例的2种土壤,对多花胡枝子和榛子2种植物进行栽培,探求豆科植物在沙质条件下其生理指标变化。结果表明:在正常和沙质土壤条件下,多花胡枝子和榛子的电导率均增加,榛子增加幅度较大,表明其电解质外渗严重;叶绿素含量、SOD活性、N和P含量均减少,但多花胡枝子变化幅度明显小于榛子,表明豆科植物多花胡枝子在逆境条件下抗性较好;沙质条件下多花胡枝子MDA含量增加值大于榛子,表明其抗氧化能力强。因此在沙质土壤条件下,多花胡枝子具有更好的适应性。

A comparative study was conducted on adaptability of Lespedeza floribunda and Corylus heterophylla to seriously corroded soil as oppose to cultivated sandy soil both with normal watering in a potled environment. The results showed conductance rate of Lespedeza floribunda and Corylus heterophylla both rised in normoal and sandy soil while Corylus heterophylla change obviously showing electrolyte folw outside seriously;then leaf chlorophyll conten, SOD activity, nitrogen and phosphoru content all decrised, change of Lespedeza floribmlda was less than that of Corylus acerophylla ,which showed Lespedeza floribunda had better performance and tolerance lo sandy soil;however change of MDA content of Lespedeza floribunda was more than that of Corylus heterophylla showing. The ability of anti-oxidizes was stronger. So Lespedeza florihunda had stronger adaptability to sandy soil.