摘要
黑肩绿盲蝽Cyrtorhinus lividipennis Reuter是水稻害虫白背飞虱Sogatella furcifera(Horvath)的捕食性天敌。本文通过室内模拟试验和田间系统调查,研究了黑肩绿盲蝽不同虫态对白背飞虱卵的密度捕食效应、空间捕食效应和发生期捕食时间效应,建立了盲蝽和飞虱卵密度与捕食量回归模型及捕食功能反应模型,测定了不同类型空间的捕食量差异参数,定量地评价了实际捕食能力及控制作用。黑肩绿盲蝽对白背飞虱卵的捕食效应随密度、时间、空间而变化。飞虱卵密度比盲蝽密度对捕食量影响更大。在盲蝽与飞虱卵数量比(B/E)较低时,盲蝽个体对虱卵的控制效应很强,但群体效应较弱。在B/E较高时,正好相反。不同生态空间的捕食量可相差5—9倍,总捕食率可相差2—3倍;被捕食是卵期最主要的死亡因子,田间实际总捕食率为28.4％,最高可达56％;正常年份,B/E达到1:300,便不需用药防治。
Indoor simulation and systematic field investigations were conducted on the density-, space- and occurrence time-dependent functional responses of different stages of Cyrtorhinus lividipennis Reuter to the eggs of white-backed rice planthopper Sogatella furcifera (Horvath). The relationship model among the feeding amount of C. lividipennis and densities of predator and host egg, as well as the functional response model of nymph and adult predator were developed. The restrictive parameter to the feeding amount in different space was analysed. The real predatory ability and control effect of this natural enemy were quantitatively assessed.
出处
《植物保护学报》
CAS
CSCD
北大核心
1995年第3期198-204,共7页
Journal of Plant Protection
关键词
黑肩绿盲蝽
白背飞虱
功能反应
捕食
Cyrtorhinus lividipennis, Sogatella furcifera, functional response
