山西省阳高县不同月份草地蝗虫的数量变化研究
산서성양고현불동월빈초지황충적수량변화연구
Study on population dynamics of grasshopper in different months in Yanggao County of Shanxi Province
  • 万方数据
    草原与草坪 초원여초평
    GRASSLAND AND TURF
    2014年 3期 67-72 ,共6页

    张夏刚%武晓梅%苏军虎%周恩芳%刘旗%姚继广%赵美清%闫科技%刘兴明%师俊%杭军

    장하강%무효매%소군호%주은방%류기%요계엄%조미청%염과기%류흥명%사준%항군

    阳高县%草地蝗虫%蝗虫数量分布 暘高縣%草地蝗蟲%蝗蟲數量分佈
    양고현%초지황충%황충수량분포
    Yanggao County%grasshopper%population distribution
    研究了山西省阳高县4~9月草地蝗虫发生规律和数量。结果表明：4、5月蝗虫群落以各龄级的若虫为主,数量较多,且几乎只分布在茭蒿草原和狗牙根草甸中,说明这两类生境是上年蝗虫的主要产卵地和当年幼虫的主要栖息地；5月比4月数量略有下降,但5月以后数量呈逐渐增加趋势,7月底数量最多、密度最大,之后数量呈逐渐减少趋势,9月的数量最少、密度最小；逐月进行 F 测验,结果表明：4、5、6、7、8月各样本之间的虫口密度差异均达到极显著水平(P <0.01),9月各样本之间的虫口密度差异为显著水平(P <0.05)；标准误差普遍较小,表明研究抽样误差较小,样本统计量与总体参数的值比较接近。
    연구료산서성양고현4~9월초지황충발생규률화수량。결과표명：4、5월황충군락이각령급적약충위주,수량교다,차궤호지분포재교호초원화구아근초전중,설명저량류생경시상년황충적주요산란지화당년유충적주요서식지；5월비4월수량략유하강,단5월이후수량정축점증가추세,7월저수량최다、밀도최대,지후수량정축점감소추세,9월적수량최소、밀도최소；축월진행 F 측험,결과표명：4、5、6、7、8월각양본지간적충구밀도차이균체도겁현저수평(P <0.01),9월각양본지간적충구밀도차이위현저수평(P <0.05)；표준오차보편교소,표명연구추양오차교소,양본통계량여총체삼수적치비교접근。
    Based on the investigation of population density of grasshopper in Yanggao County of Shanxi Province during April to September,the population dynamics and its influencing factors were analyzed.The re-sults showed that the nymphs of each age class dominated in April and May,and only distributed in Artemisia giraldii grassland and Cynodon dactylon meadow,which suggested that the two types of habitat was the main spawning and the reproduction habitats;During the end of April to the end of May,the number decreased slight-ly,from the end of the May to the end of July the number increased gradually,which reached the peak at the end of July,then gradually reduced,and reached the lowest in September;F test showed that the population density difference among April,May,June,July,August and September was significant (P <0.05).
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