【摘要】 研究了不同环境条件下新几内亚凤仙 (Impatienshawkeri)的光合作用特性。结果表明其光补偿点在5 0 μmol/m2 ·s左右 ,饱和点在 70 0 μmol/m2 ·s左右 ;二氧化碳补偿点在 5 0～ 10 0 μl/L之间 ,在浓度为 10 0 0 μl/L时达到饱和 ;温度在 18～ 2 9℃时 ,新几内亚凤仙的光合作用速率达到最高 ,温度超过 30℃ ,光合作用受到抑制 ;在遮荫条件下 ,新几内亚凤仙对高温有较强的适应性 ,在高温高光照条件下 ,会对植株造成致命伤害更多还原

【Abstract】 Photosynthesis rates of New Guinea Impatiens(Impatiens hawkeri) were measured under different compound environmental factors in this experiment. The result showed that the light compensation point was about 50μmol/m~2·s,the light saturation point was around 700μmol/m~2·s. The carbon dioxide compensation point was between 50～100μl/L,and at the point of 1000μl/L the Photosynthesis rate got its maximum. The proper temperature was between 18～29℃,and the photosynthesis would be restrained when the temperature exceeded 30℃. If shaded,the New Guinea Impatiens showed fairly good adaptability. It would cause to death when the high light combinated with high temperature.更多还原