Primary study andextension were developed on 3 aspects included natural enemy insect release andapplication, biopesticides application and the control technology with bird.
并从天敌昆虫人工释放应用、生物源农药及以鸟治虫技术三个方面进行了初步研究与推广。
参考来源 - 山东省主要林木害虫生物防治技术研究与推广·2,447,543篇论文数据，部分数据来源于NoteExpress
The result indicates that the chewing pest, piercing-sucking pest, predatory natural enemy and neutral insect are the dominance guilds in the insect community.
结果表明：咀嚼害虫、刺吸害虫、捕食性天敌以及中性昆虫是昆虫群落的优势功能团；
Natural enemy resources of insect pests of alfalfa are very abundant.
苜蓿天敌昆虫资源非常丰富。
Three nutrition relationships between plant and plant-eating insect and natural enemy are focused in some years.
近几年来植物—植食性昆虫—天敌间的三重营养级关系研究是一个热点。
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