植物根分泌物及其效应  

Root Exudates of Plant and Their Effects

作　　者：郝乾坤[1] 

机构地区：[1]杨凌职业技术学院,陕西杨凌712100

出　　处：《杨凌职业技术学院学报》2004年第1期53-56,共4页Journal of Yangling Vocational & Technical College

摘　　要：根分泌物是根际动态过程的核心物质,含有多糖、蛋白质、酶、有机酸、AA、酚类等多类有机物,影响着根际PH、EH和微生物活性,决定着土壤养分的生物有效性,控制着金属元素的迁移、转化和归宿,同时也是间作优势的重要原因之一。Root exudates were core substance of dynamic process in rhizosphere,containing lots of organic matter such as amylose,protein,enzyme,organic acid,AA,hydroxybenzene and so forth.They inferenced PH、EH and microbe activity of rhizosphere,determined bioavailability of soil nutr and controlled movement,translation and end-reisult of heavy metal elements.Meanwhile They were a cause of intercroping advantage.

关 键 词：植物营养学 根分泌物 生物有效性 根际微生态系统 PH值 EH值 微生物活性 

分 类 号：Q945.1[生物学—植物学]