摘要
1996～1998年对福建沿海星天牛(Anoplophora chinensis(Forster))危害木麻黄规律进行调查,结果表明,星天牛幼虫主要集中在离地面40cm 高度内的树干根际附近,占总虫数的94.8%;受害木大多数只有1～2头幼虫,占有虫株的90.86%。1年生林分受害株至第2年5月成虫羽化期死亡率最高,达66.7%,3～7年生林分有虫株率最高;7年生以下林分应重点防治。在生境条件相似的同龄林中,星天牛则喜欢危害基径较大的木麻黄,6 cm 以下的树则较少受害。研究结果为今后制定防治措施提供依据。
Investigating regularity of damage by Anoplophora chinensis(Forster)to Casuarina spp.in 1996～ 1998 showed,that larvas of the pest more colected near lower part of the trunk,in the range of 40 cm to the ground,by 94.8% of total insect population.Damaged plant with 1～2 larvas was 90.86% of total plants with pest insect.Death rate of damaged plants in 1-annual planlations was the most high 66.7% in May of the next year.Plants with pest insect was the most in 3～7-annual plantations.Plantations below 7 ages should be more controled.Bead wood with larger diametar was liable to damage at the same age planlations and in the similar habitat conditions.Trees below 6 cm in diameter were less damaged.
出处
《防护林科技》
2000年第S2期26-29,共4页
Protection Forest Science and Technology
基金
国家"九五"攻关专题(编号:96-005-04-04-04)
关键词
星天牛
木麻黄
危害部位
Anoplophora chinensis(Forster)
Casuarina spp.
damage location
