土壤
土壤
토양
SOILS
2010年
1期
1-7
,共7页
邱立友%戚元成%王明道%贾新成
邱立友%慼元成%王明道%賈新成
구립우%척원성%왕명도%가신성
连作障碍%次生代谢物%自毒作用%抗性机制
連作障礙%次生代謝物%自毒作用%抗性機製
련작장애%차생대사물%자독작용%항성궤제
Continuous cropping obstacles%Secondary metabolite%Autotoxic%Resistance mechanisms
连作障碍问题的发现已有上千年的历史,但对其发生机理和克服措施还没有取得突破.本文分析了植物次生代谢物的种类及其产生机理、次生代谢物的自毒作用、植物对自产的次生代谢有毒物质的抗性机制及其形成时序等,认为次生代谢物对新生植物的自毒作用是连作障碍发生的关键因素之一,并在此基础上提出了克服连作障碍的几种途径.
連作障礙問題的髮現已有上韆年的歷史,但對其髮生機理和剋服措施還沒有取得突破.本文分析瞭植物次生代謝物的種類及其產生機理、次生代謝物的自毒作用、植物對自產的次生代謝有毒物質的抗性機製及其形成時序等,認為次生代謝物對新生植物的自毒作用是連作障礙髮生的關鍵因素之一,併在此基礎上提齣瞭剋服連作障礙的幾種途徑.
련작장애문제적발현이유상천년적역사,단대기발생궤리화극복조시환몰유취득돌파.본문분석료식물차생대사물적충류급기산생궤리、차생대사물적자독작용、식물대자산적차생대사유독물질적항성궤제급기형성시서등,인위차생대사물대신생식물적자독작용시련작장애발생적관건인소지일,병재차기출상제출료극복련작장애적궤충도경.
Continuous cropping obstacle is an archaic problem discovered and known by Chinese forefathers thousand years ago.However,its mechanism was poorly understood,and subsequently no effective measures could overcome it.In this paper we analyzed the kinds and synthesizing mechanism of secondary metabolite,secondary metabolite autotoxic,the mechanisms of resistance to self-produced toxic secondary metabolites and the formation time in plants.We propose that secondary metabolite autotoxic to renascent plant is the mechanism of continuous cropping obstacles primarily,and based on the hypothesis we suggest several approaches to overcome continuous cropping obstacles.
