【摘要】 <正> 前言 我国南方诸省危害土质堤坝的主要白蚁危害种,一般多为黑翅土白蚁Odontotermes formosanus(Shiraki),其次是黄翅大白蚁Macrotemes barneyi Light。然而也有些水库则以黄翅大白蚁为主,如广东湛江志满水库1982年据分群孔普查出黄翅大白蚁21巢,其中分群孔图象标记清楚的有12巢例;黑翅土白蚁只有一巢例;海南土白蚁7巢例;黄翅大白蚁占该坝白蚁危害种数的72.41％。 为提供堤坝白蚁找巢技术,从1978—1982年对黄翅大白蚁的分群孔分布图象与主巢方位的关系进行了研究。更多还原

【Abstract】 Studies on relations between the distributional maps of the emergence holes of the colonizing flights and directions of the main nests have shown that there are four types which we obtained:1. The directions of the main nests are above the distributional maps of the emergence holes of the colonizing flights on the damming slopes.2. The directions of the main nests are among the distributional maps of the emergence holes of the colonizing flights on the damming slopes.3. The directions of the main nests are among the distributional maps of the emergence holes of the colonizing flights below the dam.The major directions of the main nests are in 40?while the minor directions are in 87.5°-107°.更多还原