摘要
通过对沟眶象Eucryptorrhynchus chinensis(Olivier)越冬代成虫和幼虫在地下生活状态的分析可知:成虫在地下的分布以东、西方向较多,在树根正下方向的最少,仅为0.47%;幼虫在地下的分布无方位差异;46.01%的成虫分布在地下21～30 cm深度,42.24%的幼虫分布在地下31～40 cm深度;27.70%的成虫分布在距树干21～30 cm范围,66.01%的幼虫分布在距树干0～10 cm范围;38.67%的幼虫体长为21～25 mm;64.64%的幼虫处在直径11～30 mm的根中。
Most of the overwintering adults of Eucryptorrhynchus chinensis located in the east and west directions underground and the adults under the roots （0. 47 % ） were the fewest, but there was no obvim ous difference in nymph distribution indirection. The suitable overwintering depth for the adults was at the range of 21-30 cm（46. 01% ） underground and 21-30 cm（27.70% ） away from the trunk while the suitable overwintering depth for nymphs was at the range of 31-40 cm（42. 24% ） underground and 0- 10 cm（66. 01% ） from the trunk The body length of 38. 67% overwintering nymphs was at the range of 21-25 mm and 64. 64% overwinter nymphs located in the root 11-30 mm in diameter.
出处
《中国森林病虫》
北大核心
2012年第2期14-15,26,共3页
Forest Pest and Disease
基金
宁夏回族自治区科技攻关项目:宁夏外来入侵有害生物预防与控制技术研究(KGX-06-09-08)
关键词
宁夏
沟眶象
越冬
习性
Ningxia
Eucryptorrhynchus chinensis （Olivier）
overwintering
habit
