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每年夏季,都会山现一段高温干旱天气,常能诱发柑橘锈壁虱和柑橘潜叶蛾的大发生。这两种害虫增长快、来势猛,往往防不胜防,造成柑橘减产和品质低劣。如1988年湖北省夏季的“百日大旱”使柑橘减产50％,其中的一个重要因素就是这两种被诱发的害虫猖獗为害。 一、高温干旱对两种害虫的诱发作用机制 1、高温干旱加快了两种害虫的生长繁殖速度 以锈壁虱为例,据室内测定,其卵期在温度16～17℃时为12～13天,20～23℃时为5～7天,
Every summer, there will be a period of high temperature and drought in the mountains, which can often induce citrus rust ticks and citrus leaf moths. These two kinds of pests grow fast and fierce, often impossible to guard against, resulting in reduced production of citrus and poor quality. One of the important factors, such as the “Hundred Days Drought” in the summer of 1988 in Hubei province, reduced citrus production by 50%. Both of these induced pests were rampant. First, the high temperature and drought on the two pests induced mechanism 1, high temperature and drought speed up the growth and reproduction of two pests To rust ticks, for example, according to indoor determination, the egg at a temperature of 16 ~ 17 ℃ for 12 to 13 Day, 20 ~ 23 ℃ for 5 to 7 days,