论文部分内容阅读
本研究用蛹皮计数法确定孳生场所白纹伊蚊的羽化数,并评价该法在测定杀虫剂效果中的作用。 在佛罗里达州中北部野外选点进行实验。将40只轮胎向北和向南置于遮荫处,另外40只轮胎向东和向西置于阳光下。一半轮胎用于计数蚊幼虫密度,另一半则用于计数蚊羽化量。每只轮胎内置3.5升井水和30克树叶浸出物。连续25周每周记录全部轮胎的幼虫数。每周每组随机选择一只轮胎记录幼
In this study, the number of eclosion of Aedes albopictus in breeding sites was determined by counting the number of pupae, and the effect of this method on pesticide determination was evaluated. Field experiment in North Central Florida. Forty tires were placed north and south on the shade, and the other 40 were placed east and west under the sun. Half of the tires are used to count mosquito larvae density, while the other half is used to count the number of mosquito bugs. 3.5 liters of well water and 30 grams of leaf extract per tire. Record the number of larvae for all tires weekly for 25 weeks. Each group randomly selected a tire records young