复合生物营养剂对水体环境的影响.PDFVIP

( ) 2017, 43(1):58–63. DOI:10.13331/ki.jhau.2017.01.011 Journal of Hunan Agricultural University (Natural Sciences) 复合生物营养剂对水体环境的影响 1,2 1# 1,2* 1 1 1 (1. 625014) 625014 2. 摘要 ABC 16 78 6 32 62 6 48 46 6 C (DO) (NH3–N) AB CK B C (TN) (TP) (Bacillus) CK (Aeromonas) CK B DO NH3–N 32 62 6 4 CK A (NO2–N) CK TN TP 关 键词 中图分类号 S963.9 文献标志码 A 文章编号 1007?1032(2017)01?0058?06 Effects of compound bio-nutrient on water environment ZENG Dong1,2, WU Haiyan1#, NI Xueqin1,2*, XIE Yongbin1, OU Xingping1, CUI Lan1 (1. Research Center of Animal Micro-Ecological, College of Veterinary Medicine, Sichuan Agricultural University, Ya’an, Sichuan 625014, China; 2. Key Laboratory of Animal Disease and Human Health of Sichuan Province, Ya’an, Sichuan 625014, China) Abstract: Water tank experiments were conducted to evaluate the effects of compound bio-nutrient (CB) combination of various nutrient ratios on water environment. In this study, group CK was the blank control group, group A, B and C were CB combinations of organic nutrients, inorganic salts and micronutrients, with the proportion of 16 78 6, 32 62 6 and 48 44 6, respectively. Results showed that dissolved oxygen (DO) concentration in group C had a significant decline, harmful substances content was the highest in group A, in which ammonia nitrogen (NH3–N) level was significantly higher than that in group CK and group B, but there was no significantly difference between group C, and its nitrite (NO2–N) content was increased remarkably compared with other groups. CB gave a great increase to the content of total nitrogen (TN) and total phosphorus (TP), especially in group A and B. A sharp increase of Bacillus counts and a significant decline of Beromonas counts were recorded in all groups treated with CB. In addition, there were an obvious improvement in the abundance and diversity of plankton in all treatments, especially in group B. The results from RDA analysis revealed that TN and TP were the major environmental factor affecting pro