分泌性磷酸酶及有机酸于根际分布状况的初步研究  

A Elementary Study on the Distribution of Secretory Acid Phosphatases and Organic Acids in the Rhizosphere

作　　者：李明刚[1] 但野利秋[2] 

机构地区：[1]烟台大学生物化学系 [2]日本札幌北海道大学

出　　处：《烟台大学学报（自然科学与工程版）》1998年第1期41-47,共7页Journal of Yantai University(Natural Science and Engineering Edition)

摘　　要：运用特制的栽培设施将１０ｍｍ范围根际土壤纵分为０．５ｍｍ，研究羽扇豆根系分泌物的分布状况．结果表明，羽扇豆根系分泌性酸性磷酸酶和有机酸类主要分布在根际０～２．５ｍｍ范围内．根系分泌的酸性磷酸酶和有机酸类能在近根处水解或活化土壤中磷。Distribution of the secretory acid phosphatase and organic acids enhanced by phosphorus deficiency in lupin rhizosphere is investigated using a rhizobox system which separated the rhizospheric soil into 0.5mm fractions. The results show that the secretory acid phosphatase and organic acids from lupin roots mainly distribute in 0～2.5mm rhizospheric soil fractions. The secretory acid phosphatase and organic acids increase the phosphate efficiency in the rhizosphere,which is important for plant to utilize soil P.

关 键 词：分泌 酸性磷酸酶 有机酸 根系 作物 生长 

分 类 号：S311[农业科学—作物栽培与耕作技术]