北京地区朱砂叶螨在蔬菜集约化栽培下的种群动态
Population dynamics of carmine spider mite, Tetranychus c innabarinus, under intensive culture in Beijing
王少丽，张友军，秦 悦，朱国仁
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作者单位：中国农业科学院蔬菜花卉研究所农业部园艺作物遗传改良重点开放实验室 北京 100081)
中文关键词：朱砂叶螨, 集约化栽培, 种群动态
英文关键词：Tetranychus cinnabarinus, intensive culture, population dynamics
中文摘要：为了明确集约化栽培管理模式对蔬菜上朱砂叶螨T etranychus 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1313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。
英文摘要：In order to demonstrate the effect of in tensive culture on carmine spider mite, Tetranychus cinnabarinus ( Boisduval), the population dynamics on bean, eggplant, sweet pepper, cucumber and tomato in plastic shed and open field in Beijing area were investigated in 2008. The results showed that carmine spider m ite populations reached the peak in the middle of June, and decreased at the end of June in greenhouse. The carmine spider mite on bean, eggplant, sweet pepper and cucumber happened at the beginning of June in the open field in spring crop and the ratio of plants with mites increased rapidly than the spiderm ite densities. No spiderm ite was found on tomato. In Autumn crop, the quantities of T. cinnabarinus on bean, eggp lant and cucum ber were pre tty low and the sp iderm ites per p lant were not higher than 13. 3. No spidermites were found on tomato or sweet pepper in p lastic shed or open fie ld. The intensive culture w as considered as acritical factor for decreasing the carm ine spiderm ites and the harmful weathe rcondition was also important.