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通过探讨柑桔始叶螨及其重要天敌尼氏钝绥螨的田间消长规律,发现柑桔始叶螨在4月下旬~5月上旬形成高峰,之后数量剧减。尼氏钝绥蟥种群高峰期相对滞后,一般在6月份形成高峰,此后种群数量一直较高。根据室内饲养资料,组建了柑桔始叶螨和尼氏钝绥螨的种群繁殖特征生命表,求出了内禀增长率等重要生命参数,并研究了它们的生物学和生态学特性,结果表明,柑桔始叶螨和尼氏钝绥螨均属聚集分布,尼氏钝绥螨具有繁殖快、捕食量大、捕食能力强等特性,对柑桔始叶螨能起到明显的制约作用。
Through the study on the growth and decline of the spider mites Tetranychus cinnabarinus and its important natural enemies, the number of spider mites began to peak from late April to early May in the first ten days of April and then decreased drastically. The population of N. obesis population lags behind its peak, which usually peaked in June, and population has been higher since then. According to the data of indoor rearing, the population life characteristics of Tetranychus cinnabarinus and Nissei Amblyseius were established, and important life parameters such as intrinsic rate of increase were calculated and their biological and ecological characteristics were studied. The results The results indicated that both Tetranychus cinnabarinus and A. nimbly were clustered and distributed. The Amblyseius niger had the characteristics of fast reproduction, large predation quantity and predation ability, which played a significant role in restraining the onset of Tetranychus citri. .