一个年龄序列巨桉人工林土壤对赤子爱胜蚓生长和生理指标的影响

发布时间：2018-07-24 13:11

【摘要】：以四川省退耕还林营造的一个年龄序列巨桉人工林(2、4、6、8和10年生)为对象,研究其林下土壤对赤子爱胜蚓生长及生理指标的化感作用。结果表明:巨桉人工林林下土壤处理下蚯蚓存活率随林龄和处理时间均无显著变化;各林龄巨桉人工林林下土壤处理下对蚯蚓体重的抑制作用随着处理时间增加而增强,但6年生林下土壤对蚯蚓的体重抑制率呈现7~14 d上升此后下降的趋势。随着林龄的增长,在第7和14天时蚯蚓体重抑制率呈先上升(2~6年生)后下降(6~10年生)的变化趋势,而在第21和28天时蚯蚓体重抑制率随林龄无显著变化;随着林龄的增长,巨桉人工林林下土壤处理赤子爱胜蚓没有显著的回避行为。处理第28天后,蚯蚓体内蛋白质含量和ACh E活性在2~8年生林下土壤无显著变化,10年生时显著升高;SOD活性在4、10年生比其他林龄显著降低,其余各林龄无显著差异;GST活性总体呈现上升趋势,6~8年生时上升显著,其余林龄则较为稳定;MDA含量在2~4年生时较为稳定,6年生时显著上升,之后又较为稳定的趋势。
[Abstract]:A series of Eucalyptus grandis plantation in Sichuan Province was used to study the allelopathy of the soil under the forest on the growth and physiological indexes of Aisheng wormworm. The results showed that the survival rate of earthworm under soil treatment of Eucalyptus grandis plantations had no significant change with forest age and treatment time, and the inhibition effect of soil treatment on earthworm weight increased with the increase of treatment time. But the weight inhibition rate of soil under 6 years old forest to earthworm showed the trend of increasing for 7 ~ 14 days and then decreasing after 7 ~ 14 days. With the increase of forest age, the inhibition rate of earthworm body weight increased first (2 ~ 6 years old) and then decreased (6 ~ 10 years old) at the 7th and 14th days, but the inhibition rate of earthworm weight did not change significantly with the forest age on the 21st and 28th days, but with the increase of forest age. The soil treatment of Eucalyptus grandis had no significant avoidance behavior under the plantations of Eucalyptus grandis. After 28 days of treatment, there was no significant change in protein content and ACh E activity in the soil of 2 ~ 8 years old forest, but increased significantly at 10 years old, and decreased significantly in 10 years old than other forest ages. There was no significant difference in GST activity among other forest ages. The activity of GST increased significantly at the age of 6 ~ 8 years, while the content of MDA was stable at the age of 2 ~ 4 years, and increased significantly at the age of 6 years.
【作者单位】：四川农业大学生态林业研究所林业生态工程省级重点实验室;
【基金】：国家自然科学基金项目(31300528)资助
【分类号】：S714

【相似文献】