pH值及营养元素对泥炭藓属植物生长的影响  

Effect of pH and Nutrition Elements on Growth of Sphagnum Plants

作　　者：王晓宇[1] 

机构地区：[1]贵州大学生命科学学院,贵州贵阳550025

出　　处：《贵州农业科学》2010年第7期80-83,共4页Guizhou Agricultural Sciences

基　　金：贵州省自然科学基金资助项目"贵州泥炭藓Sphagnum湿地生态恢复的研究"[黔科合J字(2006)2024]

摘　　要：为了对遭受破坏的泥炭藓湿地进行人工恢复与重建,以及人工条件下培养泥炭藓植物属(Sphagnum)提供理论依据,笔者对泥炭藓植物在人工栽培条件下的最适pH值和对营养物质的需求情况进行了试验研究。结果表明:泥炭藓(S.palustre L.)在pH 6.0时生长最好;人工种植所使用的化学试剂对泥炭藓具有抑制作用或毒害作用;含P元素化学试剂使大量蓝藻生长,附着于泥炭藓植物体表,造成泥炭藓死亡,并在枝叶的顶端出现颗粒状晶体(钠盐和磷酸盐)。说明,泥炭藓属植物的生长对水质有较严格的贫营养化条件要求。The optimum pH and nutrition elements for growth of Sphagnum plants were studied under the artificial cultivation condition to provide theoretical basis for artificial recovery and rebuilding of damaged Sphagnum wetlands,and Sphagnum cultivation under the artificial condition.The results showed that growth of S.palustre was the best when pH of wetlands was 6.0,and the chemical agents had the inhibition and toxic effect on growth of S.palustre in artificial cultivation of S.palustre.The chemical agent containing P element promotes fast growth of Cyanobacteria wich attaches to the surface of Sphagnum plants,which results in death of Sphagnum plants.Therefore,the growth of Sphagnum plants needs the strict oligotrophic water quality.

关 键 词：泥炭藓 PH 营养元素 生长效应 

分 类 号：S155.52[农业科学—土壤学]