黑龙江八五四农场生产田大豆病害的发生及流行分析

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中图分类号：S565.1 文献标志码：A 文章编号：2096-9902（2026）04-0055-04

Abstract：Inorder toclarifythetypes of soybean diseasesandtheepidemic lawsof the maindiseasesin Beidahuang Group's Heilongjiang854Farm，asurveyof the typesandseverityofsoybean diseases during theentire growth periodwasconductedin diferentmanagementareasof the854Farm.Atotalof5soybeandiseaseswerefoundinthe854Farm.theyaresoybeanrootrot， soybeandownymildew，soybean sclerotium，soybeangrayspotandsoybeancystnematode，of which soybeanrotrotandsoybean downymildewarethemostserious.Logisticfitingcanbeachievedforthetemporalepidemicdynamicsofsoybeanrootrotand soybeandownymildew.ThesoybeanrotrotindexgrowthperiodisfromMay18toJune12，theLogisticgrowthperiodisfrom June12toJuly22，andthedeclineperiodisAfterJuly22thesoybeandownymildewindexgrowthperiodisfromJuly11to July31，theLogistic growth period is fromJuly31 to August25，and the decline periodisafter August25.

Keywords：Heilongjiang 854 Farm; soybean; disease; Logistic model; epidemic law

大豆是重要的粮油作物，我国大豆年需求量超过1.1亿t，位居全球第一，然而国内每年的总产量不足2000万 t，85% 依赖进口[1-2]。（剩余5381字）