摘要
半动态酚毒性模拟试验表明:酚浓度高于600mg/l,凤眼莲几天内中毒死亡;酚浓度350mg/l以上亦造成不可恢复的损伤;酚浓度40mg/l以上,凤眼莲生长受到不同程度的抑制。同时叶绿素含量及a/b比率,光合作用速率及生长率等亦随酚浓度增高而降低。较强光照增加了酚的毒性影响。酚浓度25mg/l以下对凤眼莲无明显抑制影响。10mg/l以下浓度的酚还可以促进凤眼莲的生长。酚使凤眼莲无性繁殖能力下降但可促进其提早开花。
Semi-dynamic phenol toxicologic simulation test has been conducted. Results showed that when phenol concentration (cp) in water wa above 600 mg/l, the hyacinths died in a few days; when cp was higher than 40 mg/l, the growth of hyacinths slowed down to various extents, with leaves and roots partially or totally damaged, and the chlorophyll content, chl. a/b ratio, photosynthesis speed and growth rate all decreased successively as cp was rising. Intense sun-light aggravted the toxic effect of phenol on the plant. Phenol with concentrations lower than 25 mg/l had little inhibitory effect on the hyacinths and, with cp lower than 10 mg/l, it could actually promote the growth of the plant. It was found that phenol at lower concentration could inhibit asexual reproduction but could promote earlier blooming of the hyacinths.
出处
《水生生物学报》
CAS
1988年第2期125-132,共8页
Acta Hydrobiologica Sinica
