摘要
[目的]研究不同浓度污水对狐尾藻营养价值的影响,为狐尾藻资源化利用及高效处理畜禽污水提供数据支撑.[方法]选取长势一致的狐尾藻经过预培养后,每筐称取300 g,置于7个不同浓度(稀释10倍、20倍、30倍、40倍、50倍、100倍、200倍)畜禽污水中,每组3个重复,生长20 d后,刈割水上部分,检测其生物量和营养成分含量.[结果]稀释20倍污水中的狐尾藻的生物量与稀释10倍、40倍、50倍、100倍、200倍中狐尾藻的生物量差异均显著(P<0.05),与稀释30倍污水中的狐尾藻生物量差异不显著(P>0.05).稀释20倍污水中生长的狐尾藻其粗蛋白(21.65%)、粗脂肪(4.6%)、磷(0.36%)的含量最高,而粗纤维(32.64%)的含量最低.稀释20倍和10倍污水中的狐尾藻粗蛋白含量差异不显著(P>0.05),与其他浓度差异显著(P<0.05);稀释10倍、20倍、30倍中的狐尾藻粗脂肪含量最高,且与其他浓度污水差异显著(P<0.05).粗纤维含量稀释10倍、20倍、30倍组间差异不显著(P>0.05).磷含量以稀释10倍、20倍最高,与其他浓度组差异显著(P<0.05),稀释30倍、40倍、50倍间差异不显著(P>0.05).[结论]从生物量和营养成分含量来看,狐尾藻在稀释20倍浓度污水中的营养价值最高.
Abstract
[Objective]To study the effect of different domestic wastewater concentration on the nutrition value of Myriophyllum,provide data support the utilization of Myriophyllum and the efficient treatment of domestic wastewater.[Method]300 g Myriophyllum per container were placed in 7 different domestic wastewater with 3 replicates per group(10 times,20 times,30 times,40 times,50 times,100 times,200 times diluted wastewater).After growing 20 days,cut the above water part and detected its biomass and nutrition components content.[Result]The results showed that Myriophyllum''s biomass in 20 times diluted was significantly higher than that in 10 times,40 times,50times,100times,200 times (P<0.05),but no significant difference from 30 times diluted wastewater (P>0.05).The content of nutrition of Myriophyllum in 20 times diluted wastewater was highest,crude protein (21.65%),crude fat (4.6%),P (0.36%) ,while the crude fiber content was the lowest (32.64%).The content of crude protein in 20 times diluted was no significant difference from 10 times diluted (P>0.05),while there were significant difference among others(P<0.05).The content of crude fat was significantly higher than 10 times,20 times,30 times diluted,and significant difference than other groups (P<0.05).In crude fiber,there were no significant difference among 10,20,30 times diluted.The content of phosphorus in 10 times and 20 times were significantly higher than others (P<0.05),there was no significant difference between 30,40,50 times diluted (P>0.05).[Conclusion]From the biomass and nutrition value,Myriophyllum in 20 times diluted domestic wasterwater had highest nutrition value.
基金项目
农业部农业生态环境保护项目(09162110402229)
国家科技期刊平台
NSTL
维普
万方数据