采用局部控制生态因素的方法,研究了光温对人参光合的短时交互效应,不同生育时期人参光合反应以及水分胁迫对人参、西洋参光合的影响。结果表明:人参对高光照的潜在适应性高于对高温及缺水的适应性,后二者限制了人参对高光能的利用潜力。气温和光强对人参光合有明显的交互作用。但在一定程度上,西洋参具有较人参耐土壤干旱的生理机制。 Using local control of ecological factors, the effects of light temperature on the short-term reciprocal effects of ginseng photosynthesis, ginseng photosynthesis at different growth stages and water stress on the photosynthesis of ginseng and American ginseng were studied. The results showed that the potential adaptability of ginseng to high light was higher than that to high temperature and water deficit, the latter two restricted the potential of ginseng to high light energy. Temperature and light intensity on ginseng photosynthesis significant interaction. However, to some extent, American ginseng has a more physiological mechanism of resistance to soil drought.