摘要
在田间调查基础上,研究了竹笋基夜蛾[Kumasia kumaso(Sugi)]幼虫在早竹林和红哺鸡竹林中的种群动态。结果表明,竹笋基夜蛾幼虫在两种竹林中种群消长曲线均呈倒V形变化。种群密度高峰期出现在4月下旬,在红哺鸡竹林中种群密度高峰较在早竹林中推迟约6 d。通过频次分析法和9种聚集度指标对竹笋基夜蛾幼虫在早竹和红哺鸡竹林内的空间分布型进行了测定。结果表明,竹笋基夜蛾幼虫在两种寄主竹林中的空间分布格局均符合Neyman分布和P-E核心分布2种分布模型。各聚集度指标也均表明竹笋基夜蛾在早竹和红哺鸡竹林中呈现聚集分布。聚集原因是由于环境因素引起的。
Based on field investigation, larva population dynamics of Kumasia kumaso （Suqi） in Phyllostachys praecox and P. iridescins forest was studied. The results showed that population dynamics model of K. kumaso were described as trans- ＇V＇ curve, and peak of the density occurred in late April. The peak of population density in P. iridescins forest put off about 6 days compared with that in P. praecox forest. Distribution pattern of the larvae was in accord with 1Veyman distribution and Polya-Eggenberger distribution, and showed congregativeness distribution both in P. praecox and P. iridescins forest by method of frequency analysis and index of nine congregativeness degree.
出处
《中国植保导刊》
北大核心
2013年第9期14-18,共5页
China Plant Protection
基金
国家"十二五"科技支撑项目(2012BAD23B04)
国家林业局重点科学技术计划(2006-41)
关键词
竹笋基夜蛾
种群动态
空间分布型
早竹
红哺鸡竹
Kumasia kumaso （Suqi）
population dynamics
spatial distribution pattern
Phyllostachys praecox
Phyllostachys iridescins
