【作者】 雷小涛； 王香萍； 望勇； 刘小明； 司升云；

【Author】 Lei Xiaotao;Wang Xiangping;Wang Yong;Liu Xiaoming;Si Shengyun;Yangtze University;Wuhan Vegetable Research Institute;

【机构】 长江大学； 武汉市蔬菜科学研究所；

【摘要】 扶桑绵粉蚧(Phenacoccus solenopsis Tinsley)是一种外来入侵有害生物,2012年在湖北武汉地区首次发现对水生蔬菜造成为害。本研究采用五点取样方法,对扶桑绵粉蚧在各类水生蔬菜上进行调查,了解扶桑绵粉蚧的发生动态,明确其发生规律和为害,为其综合防治提供理论依据。结果表明:种群密度中等奈件下,扶桑绵粉蚧对水芹、慈姑、蕹菜等寄主植物具有较强的选择性,而对茭白、蒲菜、莼菜、菱角等寄主的选择性相对较差;水芹上扶桑绵粉蚧实验种群最早出现在3月29日,从6月上旬开始,寄主范围逐渐开始扩大,逐渐在慈姑、蕹菜、藕、芋头、荸荠等其他寄主上出现。扶桑绵粉蚧若虫种群数量在水芹上7月25日达到高峰,虫口密度为2 604头/百株,而在蕹菜和慈姑上8月1日达到高峰,虫口密度分别为3 787头/百株、2 900头/百株,随后若虫数量逐渐下降。更多还原

【Abstract】 Phenacoccus solenopsis Tinsley is an alien invasive pest,It’s firstly found to cause damage of aquatic vegetables in Wuhan in 2012.By adopting the method of five point sampling to survey the different variety of aquatic vegetables,to understand the occurrence dynamic of Phenacoccus solenopsis Tinsley,clarify its occurrence rule and damage and provide theoretical basis for its integrated control.The results showed that Phenacoccus solenopsis Tinsley had strong selectivity for celery,arrowhead,water spinach,while the selectivity for water bamboo,common cattail,water shield,water caltrop were relatively poor under the middle condition of the population density;The experimental population of Phenacoccus solenopsis Tinsley first appeared on celery in March29^th,it’s host range began to expand,gradually appeared in the arrowhead,water spinach,lotus root,dasheen,water chestnut and so on other hosts since early June.Nymphs population of P.solenopsis reached tis peak on celery on July 25^th,it’s population density was 2 604 per hundred plants;while the peak on water spinach and arrowhead on August 1^st,population density were3 787 and 2 900,respectively.Then the nymphs population was gradual decline.更多还原