花生论文营养失调论文土壤微生物区系论文：花生连作障碍的产生机理及防控措施研究

1、论文发表专家一花生论文营养失调论文土壤微生物区系论文：花生连作障碍的产生机理及防控措施研究摘要：综述了花生连作障碍的研究现状及进展。从土壤营养失调、病虫害危害严重、化感自毒物质积累、土壤酶活性下降、土壤微生物区系变化等角度阐述了花生连作障碍的产生机理，并介绍了当前治理花生连作障碍的各项防控措施，最后对花生连作障碍的机理研究及防控技术发展方向提出了展望。关键词：花生；连作障碍；营养失调；化感物质；土壤微生物区系；防控措施themechanismandcontrollingmeasuresofpeanutcontinuouscroppingobstaeleskongxianglil,2,renxi

2、nming2(l.keylaboratoryofjiangxiprovineeforresearehonaetiveingredientsinnaturalmedieines,yiehun33600O,jiangxi,china;2.eollegeoflifeseienee论文发表专家一andresourceenvironment,yichununiversity,yichun336000,jiangxi,china)abstract:thesituationandprogressofpeanutcontinuouscroppingobstaclesweresummarized.themech

3、anismofcontinuouscroppingobstacleswasreviewedinthesightofsoilnutrientunbalance,serioushazardofdiseasesandpests,accumulationofallelopathyrootsexudates,decreaseofsoilenzymeactivityandchangeofsoilmicrobialflora.thecountermeasureswerealsoreviewedincontrollingtheobstaclesofpeanutcontinuouscropping.andsom

4、efutureresearchesandcontrollingtechniquesdirec论文发表专家一tionsofpeanutcontinuouscroppingobstacleswereproposedintheend.keywords:peanut;continuouscroppingobstacles;soilnutrientunbalance;allelopathyexudates;soilmicrobialflora;controllingmeasures花生(arachishypogaeal.)是我国重要的油料作物和经济作物，常年种植面积400万hm2,约占油料作物播种总面积的35%。近年来，伴随农业种植结构的调整，花生种植不断向规模化和集约化发展，主产区的连作面积越来越大，连作障碍已成为花生产量低且不稳定的重要因素之一1。花生连作时植株瘦弱、矮小，生育不良，荚果变小，品质下降、总生物量和荚果产量均显著降低2，连作3年后减产幅度为10%40%3。当前，花生连