摘要
警根瘤蚜Phylloxera notabilis是美国薄壳山核桃嫩叶尤其是苗期的重要害虫。为了摸清警根瘤蚜的发生规律,制订有效的防治对策,调查了南京地区警根瘤蚜的种群动态。结果表明,警根瘤蚜从4月下旬开始出现,5—6月虫瘿量呈不断增长态势,7—8月新形成的虫瘿数量和活虫瘿数量最多,9月以后活虫瘿数量急剧减少直到本世代完成,至10月底活虫瘿基本消失。7—8月是警根瘤蚜发生的高峰期。此外,虫瘿量与温度的相关性分析显示温度是决定警根瘤蚜种群数量的关键因素,平均温度最高的7—8月也是虫瘿增长数和总数最多的时期。
Phylloxera notabilis is harmful to Carya illinoensis tender leaf,especially to the nursery trees. The population dynamics of P. notabilis on C. illinoensis was investigated in Nanjing. The results showed the quantity of the newly formed galls and live galls increased gradually in May and June,and peaked in July and August. The number of live galls drastically reduced after September and disappeared in the end of October. So it indicated that the occurrence peak of P. notabilis was in July and August. In addition,the correlation analysis of the quantity of galls and temperature showed that the temperature was the key factor influencing P. notabilis population. The newly formed galls increased most quickly and the total number of galls was the largest in July and August when the average temperature was the highest in a year.
出处
《中国森林病虫》
北大核心
2014年第5期5-7,12,共4页
Forest Pest and Disease
基金
国家林业公益性行业专项重大项目"重大森林病虫灾害防控技术的关键理论基础(201204501-6)"
江苏高校优势学科建设项目
关键词
警根瘤蚜
薄壳山核桃
虫瘿
种群动态
温度
Phylloxera notabilis
Carya illinoensis
gall
population dynamics
temperature
