一九七五年以来,我场在利用赤眼蜂防治杨树主要食叶害虫——青刺蛾、黄刺蛾的同时,对赤眼蜂在杨树林内的寄主范围进行了初步调查。肯定了常见的柳天蛾、大双尾舟蛾、杨枯叶蛾、白杨舟蛾、紫光夹蝶、古毒蛾、草蛉(益虫)等十余种虫卵均为赤眼蜂的自然寄主。以青、黄刺蛾、柳天蛾、杨枯叶蛾等虫卵寄生率最高,羽化力较强(见下表)。 Since 1975, Trichogramma was the dominant insect-controlling insect of Populus euphratica - Trichoplusia nipponensis and Trichoplusia ni. It is affirmed that more than ten kinds of eggs, such as the common willow moth, the big double-tailed moth, the young leaf-moth, the white-winged moth, the purple bent butterflies, the ancient poisonous moth, The larvae of Cyanothidae, Trichoplusia niger, Ceratoides xylophilus and Young Leafworm have the highest parasitism and strong emergence (see table below).