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朝鲜黑金龟(虫甲)(Holotrichia diomphalia Bates)与黑金龟(虫甲)(Holotrichia sp.)在河南各地分布甚广。幼虫为害期长,对春、夏、秋播作物,经常造成严重灾害。根据调查小麦幼苗,一般受害达10—20％,严重的可达50—60％。因此,本场于1953—1954年以尉氏县农场为基点,对这两种害虫进行了初步的研究和观察。 一、生活史及习性的观察 1.卵:朝鲜黑金龟(虫甲)的卵初产下时为乳白色,圆形,接近孵化时,色泽变淡,呈椭圆形,
Holotrichia diomphalia Bates and Holotrichia sp. Are widely distributed throughout Henan. Larvae long period of damage, spring, summer, autumn crop, often causing serious disasters. According to the survey of wheat seedlings, the general victims of up to 10-20%, severe up to 50-60%. Therefore, this field from 1953 to 1954 in Weishi County farm as a starting point for these two pests conducted a preliminary study and observation. First, the observation of life history and habits 1 egg: North Korea black tortoise (pest) eggs are primiparous when under the milky white, round, near hatching, fades color, oval,