太子参连作障害防控技术探析

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1、太子参连作障害防控技术探析　　摘要：为缓解太子参的连作障害，实现太子参的高产优质栽培，采用4因素3水平正交试验研究了不同处理对太子参单个块茎茎长、茎粗、鲜重、产量、多糖含量的影响，并对多糖含量进行极差分析。结果表明，太子参连作障害防控技术的最优组合为栽植深度11cm，土壤消毒液为福尔马林，基肥施用量为每公顷施草木灰1500kg、磷肥450kg、复合肥225kg、硫酸钾225kg，病害药物防治措施为喷50%多菌灵1000倍稀释液。关键词：太子参；连作障害；防控技术中图分类号：S567.5+3文献标识码：A文章编号：0439-8114（2013）05-1090

2、-03StudyonthePreventionandControlTechniqesofContinuousCroppingObstaclesofPseudostellariaheterophyllaZHAOKai，YINGPiao，ZHANGXin，CAOGuo-fan（CollegeofAgriculture，GuizhouUniversity，Guiyang550025，China）Abstract：InordertofurthestrelievethecontinuouscroppingobstaclesofPseudostellariaheter

3、ophylla，torealizeitshighyieldandquality2cultivation，thefourfactorsandthreelevelsorthogonaltestL9（34）wasperformed.Effectsofstemlength，stemdiameter，freshweight，moistyieldandpolysaccharidecontentofsingletuberofP.heterophyllaunderdifferenttreatmentswerestudied，andrangeanalysisonpolysa

4、ccharidecontentofyieldwasmade，theoptimalcombinationofmainpreventionandcontroltechniqesofcontinuouscroppingobstaclesofP.heterophyllawereobtained.Thatis，thetransplantdepthswas11cm，soildisinfectionsolutionwasformalin，amountsofbasefertilizerwereplantashwas1500kg/hm2，phosphoruswas450kg

5、/hm2，compoundfertilizerwas225kg/hm2，potassiumsulfatewas225kg/hm2，anddrugpreventionmeasureofdiseaseswas1000timesliquidof50%carbendazim.Keywords：Pseudostellariaheterophylla；continuouscroppingobstacles；preventionandcontroltechnologies2