二斑叶螨在4种寄主植物上的实验种群生命表组建与分析  

Establishment and analysis of life table for experimental population of Tetranychus urticae Koch on 4 host plants

作　　者：牛永浩[1] 周长勇[1] 花蕾[1] 

机构地区：[1]西北农林科技大学植保学院,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2008年第3期166-170,共5页Journal of Northwest A&F University(Natural Science Edition)

基　　金：农业部农业结构调整重大技术研究专项"无公害优质苹果生产关键技术研究"(2002-08-03A)

摘　　要：【目的】了解二斑叶螨在菜豆、桃、苹果、凤仙花4种寄主植物上的种群变化规律,为二斑叶螨的测报和防治提供理论依据。【方法】在室温((25±1)℃)、光照16 h、相对湿度20%的条件下,组建二斑叶螨在菜豆、苹果、桃、凤仙花上的实验种群生命表。【结果】二斑叶螨在菜豆、桃、苹果、凤仙花4种寄主上的内禀增长率rm分别为0.210 5,0.192 6,0.181 7,0.149 7;在菜豆、桃、苹果、凤仙花4种寄主植物上,随着时间的增加,二斑叶螨每雌产雌数总体上呈先增加后减少的趋势,二斑叶螨在以上4种寄主植物上平均每雌产雌数分别为1.867 4,1.436 2,2.851 2,1.034 2。【结论】二斑叶螨在这4种寄主植物上种群数量均增加,在菜豆上的适应度和嗜食性最好,在苹果上的种群繁殖速度最快。【Objective】 In order to know the population dynamics of Tetranychus urticae koch in the bean,peach,apple and balsamine,the theory basis for forecast and control Tetranychus urticae Koch was provided.【Method】 The life table of experimental population was established at constant temperature of（（25±1） ℃）,illumination time of 16 hours and humidity of 20%.【Result】 The results of experiment indicated that the innate capacities of increase were 0.210 5/d,0.192 6/d,0.181 7/d and 0.149 7/d on these host plants.As time increased,the number of female offsping was increased first and then declined.The rates of Tetranychus urticae Koch breed female offspring on these plants were 1.867 4,1.436 2,2.851 2,1.034 2.【Conclusion】 The quantity of the offspring increased obviously,Tetranychus urticae Koch addiction best on the kidney bean,fastest breeding stocks on apple.

关 键 词：二斑叶螨 寄主植物 实验种群生命表 内禀增长率 每雌产雌数 

分 类 号：S436.661.23[农业科学—农业昆虫与害虫防治]