摘要： 试验在植物生长箱内以5种变动温湿度组合模拟郑州地区6-7月份大气温湿度，以棉叶圆盘饲育朱砂叶螨，所得数据组建了朱砂叶螨生命表。在上述温湿度条件下，又对棉苗上的种群动态进行了观察。结果在供试高温低湿条件下，朱砂叶螨增殖最快，内禀增殖率和净生殖率最高，世代平均日数最短。棉田种群动态系统调查结果与室内研究趋势一致。证实高温干旱季节是朱砂叶螨大量增殖和暴发成灾的气候条件，雨水冲刷和高湿环境是种群数量迅速衰退的主要原因。

关键词: 朱砂叶螨, 生命参数, 种群动态

Abstract: The studies on the biological development of Carmine spider mite,Tetranychus cinnabarinus,provided the deda necessary to contruct life table to analys developmental curve.Mite of T cinnabarinus were reared individually on cotton discs in a plant growth chamber,the daily fluctuation of temperature and relative humidaty were controled.At that above temperature and relative humidaty combination,indices for instrinsic rate of natural increase was 0.2381,0.0444,0.1849,0.0751 and 0.0810 individuals per female per day,respectively.The net reproductive rate was 20.857,2.0371,20.290,4.0690 and 8.716 times,and the mean generation time 14.29,16.21,19.91,19.42 and 27.28 days,respectively.Populations of T.Cinnabarinus on cotton seedling were abserved weekly for 5weeks at above conditions.Populations increased most rapidly at 29℃(8 hr)-35℃(16hr)and 60±5% RH.The population model of each condition was proposed:Nt=2.05 e^0.2936t Nt=3.04 e^0.1668t Nt=1.43 e^0.2632t Nt=1.42 e^0.2012t Nt=2.162 e^0.2129tThe results of the population of T.Cinnabarinus under cotton field also be indicated that the hot,dry weather is conducive to outbreaks of this spider mite in summer,and the population may be intensified reduced following the raing season.

Key words: Carmine spider mite, Life parameters