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在甘蔗螟虫综合防治上,利用广赤眼蜂、澳洲赤眼蜂及拟澳洲赤眼蜂等(下文统称赤眼蜂),对甘蔗中后期螟虫的防治占有重要地位。我所自70年代中期开始利用赤眼蜂防治甘蔗螟虫的研究。实践证明,赤眼蜂能有效地控制甘蔗中后期螟虫的为害。现将研究结果初报如下:一、赤眼蜂对甘蔗螟虫寄生率分析赤眼蜂主要寄生二点螟、二化螟、条螟等的卵块,我们采用卵块寄生率与卵粒寄生率分别统计的方法。从多年的调查情况来看,卵块寄生率不完全等于卵粒寄生率,大
In the comprehensive control of sugarcane borers, the use of widely Trichogramma, Trichosanthes and Trichosanthes Trichogramma (hereinafter collectively referred to as Trichogramma), the control of stem borers in the latter part of sugarcane occupies an important position. I have been using Trichogramma to control sugarcane borers since the mid-1970s. Practice has proved that Trichogramma can effectively control the late calamite damage in sugarcane. First, the results reported as follows: First, the Trichogramma parasitism sugarcane borer parasites Trichogramma major parasitic borer, Sesamia inferens, striped borer and other eggs, we use the egg block parasitism and egg parasitism statistics, respectively Methods. From many years of investigation, the egg block parasitism rate is not equal to the egg parasitic rate, large