华东森林经理2016，Vol.30Issue(3)：38-42,54,6.
模拟酸雨对杜英幼苗生长及养分元素含量的影响
Effects of simulated acid rain on Elaeocarpus decipiens seedling growth and nutrient distribution
田苏奎 1李领寰 2伊力塔 2陈梦龄 2余树全2
作者信息
- 1. 浙江省缙云县林业局 321400
- 2. 浙江农林大学 浙江临安 311300
- 折叠
摘要
Abstract
Spraying experiments with simulated acid rain(pH2.5, pH4.0, pH5.6) on seeding of Elaeocarpus decipiens were conducted to study the growth and nutrient content of the seedlings under different acid gradient. The results showed that the dry weight of the whole plant was about 2 times of the acid treatment group in control group (pH7.0). Acid rain treatment inhibited the growth of plants, which had the most significant effect on the stem. Compared with pH2.5 and ph5.6, the pH4.0 processing had the maximum dry weight and the minimum root shoot ratio. It is indicated that plants under pH4.0 processing had better adaptability. Under pH4.0 processing, the content of nitrogen(N) and phosphorus(P) in plants was higher, and the content of potassium(P) and magnesium(M) was higher in the stem, and lower in the root. With the decrease of pH value, the content of potassium(P) and sulfur(S) in plant leaves decreased significantly while the iron content(Fe) increased obviously, and the iron content in stem was significantly increased, the zinc(Zn) in root was obviously decreased. Acid rain has a certain inhibitory effect on the sulfur(S) of Elaeocarpus decipiens seedlings and the sulfur content of pH 5.6 treatment group in leaf and root were significantly higher than that of pH 2.5 and pH 4.0, namely that acid rain in the plant has produced the leaching phenomenon rather than brought the sulfur enrichment phenomenon.关键词
模拟酸雨/生物量/元素含量/杜英Key words
Simulated acid rain/Biomass/Element content/Elaeocarpus decipiens分类
农业科技引用本文复制引用
田苏奎,李领寰,伊力塔,陈梦龄,余树全..模拟酸雨对杜英幼苗生长及养分元素含量的影响[J].华东森林经理,2016,30(3):38-42,54,6.
