竹卵圆蝽与其主要天敌相关性研究

黑卵蜂为竹卵圆蝽的主要寄生性天敌，7月中旬寄生率为8．55％，随着时间的推移寄生率大幅度增加，8月上旬寄生率高达76．70％。蜘蛛为竹卵圆蝽的捕食性天敌，相互间呈一致性消长趋势。毛竹林经劈山垦复，消灭了部分竹卵圆蝽，也消灭了大量天敌（蜘蛛减少了43．8％），使蜘蛛对竹卵圆蝽的抑制作用减弱。

THE CORRELATION BETWEEN HIPPOTA DORSALIS AND ITS MAIN NAFURAL ENEMIES

Telenums spp is the main parasitic natural enemy of Hippota dorsalis. In theearly July,its parasitic rate in the eggs of Hippota dorsalis was 8. 55%,and raised up to 76.70% in the early of August.Spider is the natural prey of Hippota dorsalis,their mutual relationship of growth anddecline seemed to be synchronous.After cutting of shrubs and ploughing in the bamboo stand,some Hippota dorsalis werekilled,so did much of its natural enemies,e. g. the number of spider was decreased as lower as43. 8%,thus the effect of much Htheota dorsalis was decreased, too.