斑痣悬茧蜂在各斑块的驻留时间随寄主密度的增加而增加。
The residence time on the patches increased with host density.
随着雌蜂密度增加，寄主蛹的寄生率和平均每头寄生蛹中的子蜂数相应提高，但平均每雌产的子蜂数则逐渐减少。
With an increase in female parasitiod density, there was a corresponding increase in pupal parasitization rate and the average number of progeny per parasitized pupae.
也可以根据防治实际中目标害虫的虫口密度及单株放蜂数量来确定每管的接入寄主数和种蜂数。
Sometimes, the amount of female wasps and hosts in single tube could be based on the density of target pests and the amount of female wasps released on one plant.
试验在雌蜂不同年龄、寄主卵量、和雌蜂密度等三方面进行。
Three factors: the age of female parasitoid density of the host, and density of the female parasitoid were studied.
查明了南宁市郊区甜菜夜蛾周年种群数量动态规律及不同寄主上的虫口密度差异；
In addition, the quantitative dynamics of population and the densities difference of S. exigua on different host plants in the field were found out.
查明了南宁市郊区甜菜夜蛾周年种群数量动态规律及不同寄主上的虫口密度差异；
In addition, the quantitative dynamics of population and the densities difference of S. exigua on different host plants in the field were found out.
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