【摘要】 对蕹菜IpomoeaaquaticForsk.种子进行了pH1.0、2.0、3.0、4.0、5.0和pH1.4下分别接触2、4、6、8、10d的模拟酸雨实验室内试验,结果如下:种子发芽率、绝对发芽率在模拟酸雨pH值小于2.0时急剧下降;活力指数在模拟酸雨pH值3.0时就开始有明显下降;在pH1.4条件下,种子发芽率、绝对发芽率均随接触模拟酸雨时间的增加而下降;发芽种子中异状发芽种子所占百分率随接触模拟酸雨时间增加而上升。更多还原

【Abstract】 A germinating experiment of seed of Ipomoea aquatic forsk was done under the condition of pH1.0, 1,4, 2.0, 3.0, 4.0, 5.0 and with incubation periods of 2, 4, 6, 8, 10 days, respectively. It was concluded that: the germination percentage and the absolute germination percentage declined largely when the pH value of simulated acid rain was less than 2.0; the index of activity decreased significantly when the pH value of simulated acid rain reduced to 3.0. Both the germination percentage and the absolute germination percentage decreased with enhancement of treatment time with the simulated acid rain of pH 1.4. The ratio of abnormal germinating seeds to the germinating seeds increased with extension of incubation time with the simulated acid rain.更多还原