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为了明确集约化栽培管理模式对蔬菜上朱砂叶螨Tetranychus cinnabarinus(Boisduval)的种群数量及动态的影响,2008年在中国农科院蔬菜花卉所塑料棚和露地春、秋茬5种蔬菜上,调查了该螨的种群动态。结果表明,6月中旬春棚的朱砂叶螨种群数量达到高峰期,6月下旬后则明显下降;露地春茬菜豆、茄子、甜椒和黄瓜于6月上旬始见叶螨发生,有螨株率比单株螨量增长迅速,番茄上未发现叶螨。塑料棚和露地秋茬菜豆、茄子和黄瓜上朱砂叶螨发生数量低于13.3头/株,番茄、甜椒寄主上均未发现叶螨为害。分析认为,集约化栽培措施是制约朱砂叶螨种群发生数量的关键因素,降雨和高湿等不良的气象条件也有重要影响。
In order to clarify the effects of intensified cultivation and management modes on the population and dynamics of Tetranychus cinnabarinus (Boisduval) on vegetables, the investigation was conducted on the plastic sheds of vegetable and flower gardens and five kinds of vegetables on open spring and autumn in Chinese Academy of Agricultural Sciences The population dynamics of the mite. The results showed that the population of Tetranychus cinnabarinus reached a peak in mid-June and decreased significantly after the end of June. Beans, eggplant, bell pepper and cucumber were exposed to spider mites in the spring of June, The rate of mite increased rapidly than the single plant, spider mites found on tomato. The number of Tetranychus cinnabarinus in plastic shed and open field autumn bean, eggplant and cucumber was less than 13.3 per plant, and spider mites were not found on the host of tomato and sweet pepper. Analysis suggests that intensified cultivation measures are the key factors restricting the occurrence of Tetranychus cinnabarinus population, and adverse weather conditions such as rainfall and high humidity also have an important impact.