不同土壤条件下云南紫荆幼苗生长和光合特征比较

摘要

通过盆栽对比试验，对酸性土和石灰土上生长的云南紫荆（Cercis yunnanensis）幼苗的生长和光合特征进行研究。结果表明：经过一个生长季节后，石灰土上云南紫荆的生长比酸性土上好，具有较高的生长量和生物量积累。云南紫荆对石灰岩土壤适应能力较强，可作为石灰岩山地的造林树种进行推广。%Characteristics of growth and photosynthesis on the seedlings of Cercis yunnanensis were re- searched with the pot experiment, which took acid soil and lime soil as the substrate respectively. The result showed that the seedlings grew better in lime soil than acid soil with higher growth yield and biomass after a growing season. It believed that Cercis yunnanensis was the typical limestone plant which could adapt the limestone soil and could be used as the afforestation tree species in Limestone Mountains.