Some species of Staphylinidae on rice field are important predaceous natural enemies of insects .
有些稻田隐翅虫是重要的捕食性天敌。
This paper records the natural enemies of pests in Xichang farmlands, including 96 parasitic insects and 81 predatory insects.
本文记录了西昌农田害虫天敌寄生性昆虫96种，捕食性昆虫81种。
The article studied the influence of ducks in a rice-duck complex ecosystem as well as its natural enemies and diseases, insects, weeds and pests.
研究鸭子在稻鸭复合生态系统中对蜘蛛及病、虫、草害的影响。
And the species of insect pests in the city together with the insects as the pests' natural enemies hare been checked up.
初步摸清了秦皇岛市区园林害虫种类及天敌昆虫资源情况。
The prerequisite for the natural enemies to be able to control insect pest is that the increase of injurious insects is restrained by the density of the latter.
捕食天敌能防治病害的前提是害虫猎物数量增长受害虫自身密度的制约。
The prerequisite for the natural enemies to be able to control insect pest is that the increase of injurious insects is restrained by the density of the latter.
捕食天敌能防治病害的前提是害虫猎物数量增长受害虫自身密度的制约。
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