葡萄糖添加对太湖水体浮游植物生长的影响

发布时间：2018-02-20 02:25

本文关键词： 葡萄糖碳源浮游植物氮、磷营养盐　出处：《渔业现代化》2016年05期 　论文类型：期刊论文

【摘要】：为探索葡萄糖(碳源)添加对浮游植物生长的影响,于2015年7月30日—8月6日用太湖梅梁湾水体进行了碳、氮、磷的营养盐添加试验。试验设置3个处理,每个处理均添加相同水平的氮、磷营养盐,而碳添加质量浓度分别为0 mg/L(对照组)、51 mg/L(低碳组)和102 mg/L(高碳组)。结果显示,对照组与低碳组的叶绿素a(Chl-a)均显著高于高碳组(P0.05),3个处理间总悬浮颗粒物(TSS)质量浓度没有显著差异(P0.05);整体上,第1~8天和第6~8天,高碳组的硝酸盐氮(NO_3~--N)、活性磷(SRP)质量浓度的降低速率均是最高的,低碳组次之,对照组最慢(P0.05)。研究表明,葡萄糖添加控制了浮游植物生长,促进了水体中无机氮、磷质量浓度降低;但在添加葡萄糖的处理中,无机氮、磷质量浓度降低速度的加快并没有得到更高的浮游植物浓度。
[Abstract]:In order to explore the effect of glucose (carbon source) supplementation on phytoplankton growth, carbon, nitrogen and phosphorus supplementation experiments were carried out in Meiliang Bay, Taihu Lake from July 30th 2015 to August. Three treatments were used in the experiment. Each treatment added the same levels of nitrogen and phosphorus nutrients, and the concentration of carbon added was 0 mg / L (control group, 51 mg / L (low carbon group) and 102 mg / L (high carbon group), respectively. Chl-a) of the control group and the low carbon group were significantly higher than that of the high carbon group (P 0.05). There was no significant difference in the total suspended particulate matter (TSS) mass concentration among the three treatments, and on the whole, on the 1st day and the 68th day, there was no significant difference in the quality concentration of total suspended particulate matter (TSS). In the high carbon group, the reduction rate of nitrate nitrogen, nitrite, nitrate-N, active phosphorus (SRP) concentration was the highest, followed by the low carbon group, and the slowest P0.05 in the control group. The results showed that glucose supplementation controlled the growth of phytoplankton and promoted inorganic nitrogen in the water. The concentration of inorganic nitrogen and phosphorus decreased rapidly and the phytoplankton concentration did not increase with the addition of glucose.
【作者单位】：农业部渔业装备与工程技术重点试验室中国水产科学研究院渔业机械仪器研究所;
【基金】：国家自然科学基金项目(41401580) 国家科技支撑计划项目(2012BAD25B01) 国家重点基础研究发展计划(973计划)项目(2015CB150703) 农业部渔业装备与工程技术重点试验室开放课题(2012007)
【分类号】：X524;X173

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