冀东地区不同玉米品种蓟马发生种类和种群动态

The species and population dynamics of thrips on different maize varieties in Eastern Hebei province

2017年对冀东地区非糯非甜玉米、糯玉米和甜玉米3个品种田间蓟马发生情况进行了调查。经室内种类鉴定,3个玉米品种上发生的蓟马种类相同,均为禾花蓟马[Franklinielle tenuicornis(Uzel)]、稻管蓟马[Haplothrips aculeatus(Fabriecius)]和玉米黄呆蓟马[Anaphothrips obscurus(Müller)]。经田间种群数量调查,玉米大喇叭口期禾花蓟马、稻管蓟马、玉米黄蓟马发生数量均达高峰,虫口密度分别为4310.0头/百株、3673.3头/百株、2936.7头/百株,三者之间差异不显著(P>0.05)。调查期间,非糯非甜玉米、糯玉米和甜玉米品种上蓟马发生总量差异不显著(P>0.05);3个玉米品种上禾花蓟马均为优势种,分别占蓟马总量的71.96%、83.29%和79.05%,其发生数量显著高于稻管蓟马和玉米黄呆蓟马(P<0.05),而禾花蓟马在3个玉米品种上的发生数量差异不显著(P>0.05)。

The species and the population dynamic of thrips on three maize varieties-common corn,waxy corn,and sweet corn-in Eastern Hebei province were investigated in 2017.The results showed that the species of the thrips on all three maize varieties were the same,including Franklinielle tenuicornis(Uzel),Haplothrips aculeatus(Fabri-ecius)and Anaphothrips obscurus(Müller).The occurrence of the above three thrips species all reached the peak in V12 stage,and the population density was 4310.0,3673.3,and 2936.7 individuals per 100 plants,respectively,without significant differences(P>0.05).There were no significant differences in the total thrip amount on common corn,waxy corn,and sweet corn during the investigation(P>0.05).F.tenuicornis was the dominant species on all the three maize varieties,which accounted for 71.96%,83.29%,and 79.05%of the total thrips population,respectively.The occurrence of F.tenuicornis was significantly higher than that of the other two species(P<0.05),but without significant differences in the three maize varieties(P>0.05).