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赤眼蜂是多种害虫的卵期寄生蜂，人工释放赤眼蜂防治林业害虫是一种有效的防治措施。从我们多年放蜂治虫实践中，发现赤眼蜂在越冬期间，受气候环境条件影响，越冬后的种群数量有较大损失，造成初春种群密度降低。为提高林间赤眼蜂种群数量，我们进行了早期低量放蜂及补充寄主?
Trichogramma is a parasitic wasp of various pests during egg stage. Artificial release of Trichogramma was an effective control measure against forestry pests. From our practice of beekeeping, we found that during the wintering period, trichogramma was affected by climatic and environmental conditions, resulting in a large loss of population after overwintering, resulting in the decrease of population density in early spring. To increase the number of Trichogramma population, we conducted early low-dose beekeeping and replenishing hosts.