沙角衣藻转化难溶性磷的研究  

Study on Transformation and Utilization to Phosphate Rocks by Chlamydomonas sajao Lewin

作　　者：卿人韦[1] 兰利琼[1] 刘英华[1] 陈儒[1] 牛培[1] 叶华勋[1] 傅华龙[1] 

机构地区：[1]四川大学生命科学学院,成都610064

出　　处：《四川大学学报（自然科学版）》2003年第1期127-130,共4页Journal of Sichuan University(Natural Science Edition)

基　　金：四川省科技厅支持攻关项目基金

摘　　要：以磷矿石粉为沙角衣藻(ChlamydomonassajaoLewin)的唯一生长磷源,研究沙角衣藻对难溶性磷源(矿石磷)的转化利用作用.结果表明:沙角衣藻对矿石磷的转化强度可达40.56%～63.49%,以有效磷mg/g磷源为单位可达41～64,是一般溶磷细菌溶磷强度的2～4倍,相当于每产1g鲜藻体可得磷酸1.52g.该藻不仅能快速地转化利用磷矿石粉中的难溶性磷源以满足其自身的生理需要,而且能迅速提高介质中的有效磷浓度,为环境中其它生物的生活提供磷源;而且这种转化作用的强度与其对磷的需要相协调.可确保体系供磷和需磷的和谐同步进行.Transformation and utilization to phosphate rocks by Chlamydomonas sajao Lewin were studied. The phosphate rock powder was unique phosphate source. The results showed that transformation intensity to the phosphate rocks by Chlamydomonas sajao Lewin got to 40.56%～63.49% or 41～64mg/g(available phosphorus/phosphate rock powder),and it was 2～4 times of that by bacteria. It meant that producing 1mg fresh algae corresponded to obtaining 1.52mg phosphorus acid. The species could rapidly avail phosphorus of the phosphate rocks and also release phosphorus of the phosphate rocks into the culture medium, consequently enhancing the available phosphorus concentration of the culture system. So other organism could obtain phosphorus source from the culture system. Especially, its transformation intensity to the phosphate rocks could be regulated by its demand to phosphorus. This mechanism, both ensuring the phosphorus supply and avoiding the phosphorus waste, is an ideal thing in agriculture.

关 键 词：难溶性磷 沙角衣藻 矿石磷 转化强度 生态磷肥 农业生态系统 生长磷源 

分 类 号：TQ446.3[化学工程—化学肥料工业]