(6)标记法:即标志再捕法。用红、白漆组合标记或用薄铜版纸印刷编号贴在成虫的上翅上等方法。以放虫点为中心设置伐倒的原木,隔2—3日收集标志虫,或与诱引剂并用,收集标志虫,推算成虫数,结果见表1。由于性比为1∶1,所以每公顷雌蛾总数应是推算数×2。 (6) marking method: that is, the sign arrest method. Use red, white paint combination of markings or the use of thin coated paper numbers affixed to the upper wing on adults and other methods. To set the center of the deworming points cut logs, 2-3 days to collect signs of insects, or with luring agent and collect signs of insects, projections of adult number, the results shown in Table 1. Since the sex ratio is 1: 1, the total number of female moths per hectare should be the estimated number x 2.