宁夏荒漠地区甘草种子害虫对寄主斑块质量与格局的响应

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中图分类号：S435.677 文献标识码：A doi：10.3969/j.issn.1002-204x.2025.12.003

文章编号：1002-204X（2025）12-0011-04

Responses of Licorice Seed Pests to Host Plant Patch Quality and Patch Pattern in Desert Area in Ningxia

Yang Weidi'，Wang Xiaochun1， Yang Tianhui'， Chen Honghao² （1.InstituteofAnimal Science，Ningxia Academyof Agriculture andForestry Sciences，Yinchuan，Ningxia70002; 2.Institute ofPlant Protection，Ningxia Academyof Agricultureand ForestrySciences，Yinchuan，Ningxia750002）

Abstract Licorice seed pests included Bruchophagus glycyrhizae Nikolskaya.and Bruchidius ptilinoides Faharaeus.， damage rate of licorice seed pests is as high as over 40% ，which hasbecome one of the importantbottleneck of licorice planting industry.Inorder to explore the influence of landscape factors on licorice seed pests，taking the desert landscape in mid-eastern Ningxiaas the background，13 patches of three habitat types，namelyartificial sand-fixing secondary forest land，mobileaeolian sandylandand sandyloam hillland，were selected，to studythe responses of licorice seedpests to the patchquality，patch areaand spatialpatternof host plants.Theresults showed that the damageratesoflicoriceseedpestsvariedsignificantlyinthreediferenthabitats.Atthehabitatlevel，thedamagerateof licoriceseedpestswas closelyrelatedtothedensityofleguminousplants.Atthesmall-scalelevelof thepatch，it was significantlypositivelycorrelated withthecoverage of otherplants，andtherelationshipconsigned to Y=6.762 356 21 + （204号 0.310 340 865 95 ×X6 .The pest damage rate of licorice seeds was not significantly affected by habitat fragmentation and thereduction of patch area.There was no obvious correlation withtheratioof the inner edge ofthe patch and the patch connection index，butitwas significantlynegativelycorrelated with thepatchshape index，withacorrelationcoefficient of 0.689 4.It showsthat licorice seed pestsare afected byhost densityonalarge scale and shelterlandscape factors such as other plant coverage and patch shape on a small scale.

Key Words Desert landscape; Patch quality; Patch pattern; Licorice; Seed pests

甘草是最为大宗的中药材之一，自然分布在我国东北、西北地区，种子来源主要依靠采集野生甘草，产量约为 3.75kg⋅hm-2[1] ，而 40% 以上的甘草种子遭受害虫为害而丧失发芽能力。（剩余6257字）