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应用赤眼蜂防治玉米螟,既安全有效,又省工省药,不仅成本较低,而且又无残毒和其它副作用,因此它是防治玉米螟的一个好方法,几年来经过各地试验后,深受广大贫下中农的欢迎,但使用赤眼蜂防治玉米螟除了有适宜的优质蜂种、合适的放蜂量和放蜂次数外,而如何做到适期放蜂,使蜂卵相遇,也是提高放蜂效果的一个重要问题。过去的玉米螟测报方法只适用于颗粒药剂防治,为适应用赤眼蜂防治玉米螟,必须找出新的预测方法及其指标,
The application of Trichogramma ostriniae control corn borer, both safe and effective, but also save labor and medicine, not only low cost, but also without residual toxicity and other side effects, so it is a good way to control corn borer, after several years of tests around the depth By the majority of poor peasants welcome, but the use of Trichogramma control corn borer in addition to the appropriate quality bee species, the appropriate amount of bee-eaters and the number of bee-eaters, and how to do the appropriate beekeeping, the bee eggs meet, but also improve An important problem with beekeeping effects. In the past, the method of measuring the corn borer was only suitable for the prevention and control of granular pesticides. In order to adapt to the prevention and control of the corn borer, it was necessary to find out a new forecasting method and its index,