血清法探讨天敌对三种稻田昆虫的抑制作用  

A STUDY ON PREDATION OF NATURAL ENEMIES TO THREE RICE PEST IN SECTS BY SEROLOGICAL METHOD

作　　者：周汉辉[1] 

机构地区：[1]中山大学昆虫学研究所

出　　处：《植物保护学报》1989年第1期7-11,共5页Journal of Plant Protection

摘　　要：本文介绍了用血清法探讨狼蛛等天敌对早造稻田三种昆虫捕食量的结果,在秧田,狼蛛对小白翅叶蝉和摇蚊的捕食率都非常高,隐翅虫则对摇蚊的捕食率很高。在大田情况下、狼蛛捕食摇蚊的比率也相当高,而对小白翅叶蝉和白背飞虱的捕食比率则相对较低。本文根据阳性反应率,计算了狼蛛对三种昆虫的亩捕食量,并分析了狼蛛和隐翅虫对这三种昆虫可能的抑制作用。根据狼蛛对这三种昆虫的捕食频率分布明显偏重于摇蚊,和在早造秧田及早春大田对摇蚊的高捕食率,认为摇蚊是狼蛛等天敌的重要补充食源,尤其在早春其他食源缺乏的情况下更为重要。This paper deals with the serological method (precipitin test)to study the predation of naturalenemies to the pest insects in the rice field of the first half year. In the seedling field,the predated percentage by wolf spiders on Empoasea subrufa andChironomus sp.are very high,but in the paddy field,the predated percentage are lower on theEmpoasea subrufa and Sogatella furcifera.The control functions of wolf spiders and Paederusfuscipes to three rice pest insects in the rice field of the first half year were analysed. According to the result,it was considered that the Chironomus sp.is the chief food resourceof natural enemies,especially in the spring.

关 键 词：血清法 狼蛛 小白翅叶蝉 摇蚊 飞虱 

分 类 号：S435.115[农业科学—农业昆虫与害虫防治]