摘要
对繁殖周期短的猎物来说,猎物在繁殖前被捕食的量的多少.是影响天敌捕食量计算结果的重要因素之一,必须纳入天敌捕食量计算公式。1984—1992年,作者采用推理分析、天敌捕食习性研究、实践验证的方法,对黑带食蚜蝇的捕食量计算方法进行了研究,结果表明:其捕食量计算公式应该采用 P=(R_C+B_C)/2(B_T/B_C-R_T/R_C),式中各字母含意见表1.
For the prey with short reproductive cycle,how many amount was predatedbefore reproduction is an important factor affecting estimating amount preyedby natural enemy.An estimating method of predacious amoun by Syrphusbalteatus was recommended by using analytical inference,observe the habits of thepredator,test and vertfy in 1984—1992.The formula is P=((R_C+B_C)/2)(B_T/B_C-R_T/R_C).(P=Predacious amount,B_C=base of prey in the contrast,B_T=base of preyin the treatment,R_C=remainder of prey in the contrast,R_T=remainder of peryin the treatment).
出处
《昆虫天敌》
CSCD
1993年第1期18-21,共4页
Natural Enemies of Insects
关键词
繁殖周期
黑带食蚜蝇
捕食量
估计方法
Reproductive cycle
Syrphus balteatus
Predacious amount
Estimating menthod
