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以控制小菜蛾为目的，在实验室对２９种赤眼蜂或品系进行了筛选。筛选评价根据５项指标：（１）能在小菜蛾卵上产卵的雌蜂比例，（２）每雌蜂寄生卵量，（３）子峰在每粒寄主上的存活率，（４）羽化率，和（５）子代性比。研究结果表明：有２３种赤眼蜂或品系能够寄生小菜蛾卵，但无论在种间还是品系间均存在很大差异。根据５项筛选指标综合评价，２９种中较好的为：前苏联的Ｔｒｉｃｈｏｇｒａｍｍａ ｔｒｊａｐｉｔｚｎｉ，美国的Ｔ．ｐｒｅｔｉｏｓｕｍ，法国的Ｔ．ｎａｇａｒｋａｔｔｉｉ，中国台湾的Ｔｒｉｃｈｏｇａｒａｍｍａｔｏｉｄｅａ ｂａｃｔｒａｅ，中国广东的Ｔ．ｃｈｉｌｏｎｉｓ和法国的一个种Ｔ．ｓｐ。其中美国的Ｔ．ｐｒｅｔｉｏｓｕｍ，中国台湾的Ｔｒｉｃｈｏｇａｒａｍｍａｔｏｉｄｅａ ｂａｃｔｒａｅ，中国广东的Ｔ．ｃｈｉｌｏｎｉｓ可以考虑作为大田防治小菜蛾的首选蜂种。田间筛选及大田验证试验正在进行之中。
For the purpose of controlling Plutella xylostella, 29 kinds of Trichogramma or strains were screened in the laboratory. The screening evaluation was based on five indicators: (1) the proportion of female bees that lay eggs on the diamondback moth eggs, (2) the number of parasites per female, (3) the survival of the sub-peaks on each host, (4) Emergence rate, and (5) progeny ratio. The results showed that 23 Trichogramma species could parasitize the eggs of Plutella xylostella, but there were great differences in both interspecies and lines. According to the comprehensive evaluation of five screening indicators, 29 of the better: Trichogramma trjapitzni of the former Soviet Union, the United States of T pretiosum, French T nagarkattii, Trichogarammatoidea bactrae, Taiwan, China, T. Chilonis and a species of France. sp. One of the United States T pretiosum, Trichogarammatoidea bactrae in Taiwan, China, T. Chilonis can be considered as the first choice of beet armyworm control in the field. Field screening and field validation trials are ongoing.