数值反应和实验种群生命表分析胡瓜钝绥螨对柑橘全爪螨的控制能力  

Analysis of Numerical Responses and Main Life Parameters for Determining the Suppression of Amblyseius cucumeris on Panonychus citri

作　　者：张艳璇[1] 林坚贞[1] 季洁[1] 康玉妹[2] 陈霞[1] 

机构地区：[1]福建省农业科学院植物保护研究所,福州350013 [2]福建省农业科学院耕作轮作研究所,福州350013

出　　处：《中国农业科学》2004年第12期1866-1873,共8页Scientia Agricultura Sinica

基　　金：国家科技部农业科技成果转化资金资助项目(02EFN213500311);国家重点新产品项目;福建省科技厅"十五"重大项目(2001-T-2);福建省计委高新技术产业化项目和国家外专局重大推广项目(2001105)

摘　　要：本文用数值反应、实验种群生命表参数分析胡瓜钝绥螨对柑橘全爪螨的控制能力。研究结果表明:(1)在21～31℃范围和1～9猎物密度条件下,随着温度升高胡瓜钝绥螨的捕食量增大。在同一温度条件下随着猎物密度增加捕食量增大,均呈正相关关系;(2)在益∶害=1∶30比例中胡瓜钝绥螨对柑橘全爪螨控制慢,而在5∶30～9∶30范围内第4、5天就能完全控制柑橘全爪螨的种群增长;(3)在25±1℃、RH 80%～85%、15L:9D条件下柑橘全爪螨净增殖率R0=34.0053,高于胡瓜钝绥螨(R0=21.8750),内禀增长率rm=0.1814,低于胡瓜钝绥螨(rm=0.1826),世代平均周期T=19.436,明显长于胡瓜钝绥螨(T=16.1943),周限增长率λ=1.1989,低于胡瓜钝绥螨(λ=1.2004),种群倍增时间t=3.8204,高于胡瓜钝绥螨(t=3.7954)。研究结果表明,胡瓜钝绥螨具备优良天敌的特性,在柑橘全爪螨处于低密度时能有效地控制柑橘全爪螨种群增长。In this paper the numerical response and main parameters of experimental population life table were analyzed for determining the suppressing ability of Amblyseius cucumeris on Panonychus citri. The results showed that: (1) Under 21-31℃ and 1-9 prey densities/leaf fragment condition, the prey consumptions of A. cucumeris increased with the temperature or prey density;(2) In 1:3 predator-prey ratio treatment, the suppression of P.citri (Ro=34.0053; T=19.4369; t=3.8204) was rather weak, it was enhanced as the ratio over 5:30, and the populations of P. citri in these treatments can be controlled within 4 - 5 days; (3) Under 25±1℃, 80%-85%RH and 15L:9D illumination conditions, the net reproductive rate, mean generation duration and the time for population double increase of P.citri (Ro=34.0053; T=19.4369; t=3.8204) were higher than those of A. cucumeris (Ro=21.8750; T=16.8943; t=3.7954). While the intrinsic rate of increase and finite rate of increase of the former (rm=0.1814; λ=1.1989) were lower than those of the latter (rm=0.1826; λ=1.2004). These results indicated that A. cucumeris is a desirable bio-control agent to suppress P.citri at lower population stage in citrus orchard.

关 键 词：胡瓜钝绥螨 全爪螨 柑橘 实验种群生命表 种群增长 捕食量 螨净 研究结果 反应 控制 

分 类 号：S436.66[农业科学—农业昆虫与害虫防治]