模拟酸雨对4种果树生长发育的影响

采用模拟酸雨的方法,研究了不同pH值酸雨对荔枝(Litchi Chinensis Sonu.)、龙眼(Dimocarpus longan Lour.)、黄皮(Clausena lansiumclour Skeels.)、芒果(Mangifera indical L.)等4种果树的新梢增长、叶片伤害、果实生长发育和叶片叶绿素含量的影响.结果表明,不同pH值酸雨对4种果树的新梢增长、果实生长发育有不同程度的抑制;酸雨的pH值越低,叶片在短期内出现的可见伤斑越多,受害叶面积越大,且叶片叶绿素含量越低.不同果树之间对酸雨的抗性有明显差异,其强弱顺序为芒果、黄皮、龙眼、荔枝.

The effect of simulant acid rain on the growth and development of four fruit crops

The effects of different pH value simulant acid rain on four fruit crops (litchi, longan, wampee and mango) were studied by measuring the growth of new branch, the damage of leaf, the growth of fruit and the chlorophyll content. The results showed that under acid rain stress, the growth of branch, leaf, and fruit of four fruit crops were all inhibited, the damage index increased as the pH value of acid rain reduced, and the content of chlorophyll decreased. Additionally, under the same acid rain stress, there were different reactions among the four fruit crops, for example, mango was of the strongest and litchi was of the weakest resistance to the acid rain.