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1.本文所述的两种金龟子,其一为茶色金龟子,属鞘翅目,金龟子科中的Rutelinae亚科,其二为铜色白纹金龟子,属Cetoniinae亚科。 2.茶色金龟子在莲塘一年发生二代。其第1次成虫盛期多在6月。第2次则在8月;铜色白纹金龟子,一年仅发生一代,其成虫出现期为6至9月,少数可延长到10月中旬。 3.茶色金龟子的成虫,为夜出性,傍晚7时半后,即开始出土,停息在多种寄主植物的叶片上,取食或交配,拂晓时飞返土中。铜色白纹金龟子的成虫,为日出性,取食成熟果子,玉米苞穗及多种树木的浆汁,亦喜取食。既钻入后,可连续数日不出。 4.两种金龟子的幼虫,都栖息在土中。茶色金龟子幼虫以在菜园土中、丘陵黄土地及属于粘壤性质的田塍内为多,对于土壤性质选择,较不严格。铜色白纹金龟子幼虫则多集中在腐熟的堆肥及腐殖质极丰富的土中,对于土壤,有比较严格的选择性。 5.关于防治方法:茶色金龟子在成虫期曾试用了0.5％γ体666粉及25％DDT乳剂(1份加水250份〕喷撒,第1种药适用于叶面较粗糙的植物,第2种则可用于叶面较光滑的植物,只要喷撒1次,便能在整个成虫发生期中,避免其飞来取食。铜色白纹金龟子的成虫,则可采用竹筒诱杀,筒高12—16寸,筒内盛腐熟果子及蜜,贴靠枝杆悬挂,能将圆内所有成虫,全部诱入筒中。此外,前一种成虫,并可利用外出?
1. Two chafers described in this article, one is a brown chafer, Coleoptera, the beetle family Rutelinae subfamily, the second is a copper-colored chafer, belonging to Cetoniinae subfamily. 2. brown beetle occurred in Liantang second generation a year. Its first adult peaked in June. The second is in August; copper chafer, only a generation a year, the emergence of adults from June to September, a few can be extended to mid-October. 3. Brown beetles adult, night out of the night, 7:30 in the evening, that is, the unearthed unearthed in a variety of host plant leaves, feeding or mating, fly back to earth at dawn. The adult copper beetle, for sunrise, feeding mature fruit, corn buds and a variety of tree juice, also like to eat. Both after drilling, can not be for several days. 4. Two kinds of beetle larvae, are habitat in the soil. Brown beetle larvae in the garden soil, hilly loess and belong to the nature of the clay in the field as much as for the choice of soil properties, less stringent. Copper-colored chafer larvae are mostly concentrated in the composting of humus and soil rich in soil, for the soil, there is a more stringent selectivity. 5. On the prevention and treatment methods: brown beetle in the adult period had tried 0.5% gamma body 666 powder and 25% DDT emulsion (1 water 250 parts) spraying, the first species of medicine for the coarse leaves of plants, 2 Species can be used for smoother leaves of the plant, as long as the spray 1, will be able to occur throughout the occurrence of adults to fly to eat .Calmus white beetle adult, you can use bamboo trap, tube 12-16 Inch, the tube filled with rotten fruit and honey, sticking to the stick hanging, can all the adults within the circle, all into the tube.In addition, the former adult and can be used to go out?