摘要
苦楝 (Meliaazedarach)对星天牛 (Anoplophorachinensis)成虫具有较强的引诱能力 ,引诱直线距离可达2 0 0m以上 ,6～ 7月的诱虫量占整个诱虫期的 71 6 % ,星天牛在苦楝树上的取食、停歇及交配时间每次一般在2～ 7h之间 ;诱饵树以设置在通风向阳的林道旁或郁闭度较小林分的林窗中为宜 ,距寄主植物有一定距离的林缘更佳。以 5种溶剂在常温下浸泡苦楝树叶及嫩枝皮 ,用其浸提液制成滤纸和木块诱芯 ,对星天牛成虫进行引诱试验 ,以甲苯、丙酮、乙醇 3种溶剂的效果较好 ,单头次啃咬诱芯最长时间达 37min 46s,且雌虫在诱芯上表现出产卵动作 ;红外光谱仪测试及引诱效果分析认为苦楝树中具有活性的引诱成份为醇类和芳香族化合物 ;林间防治试验表明 ,在苦楝诱饵树上喷施农药毒杀星天牛时 ,以 8%绿色地雷 30 0倍液为首选 ,可每 2 5d喷药 1次 ;而用 5 0 %甲胺磷 40 0倍液、40 %氧化乐果 40 0倍液应每半个月内施药 1次为佳。
The experimental results showed that the bead tree (Melia azedarach.) had strong alluring ability to the adult of the long-horned beetle Anoplophora chinensis.The alluring distance was over 200m,and the number of the beetle allured in June and July accounted for 71.6% in the whole alluring period,the time for the beetle to take food,have rest and mate in the tree was 2～7 h once.Setting up alluring tree should be on sides of ventilate and sunny forest road or in forest windows with a less crown density.The forest horder having a certain distance from the host plant is better.Alluring the adult beetle with filter paper and block alluring core made of extractives from leaves and twigs of Melia azedarach L.soaked in 5 solvents.It was showed that toluene,acetone,ethanol were better than the other two solvents,especially the toluene with which the time of a single adult beetle biting alluring core was up to 37min*!46s,and adult male showed blowing action.Through the test by infra-red instrument and analysis of alluring effect,it was supposed that the active alluring compositions in bead tree would be compounds of alcoholates and aromatics.In forest stands the control of the adult beetles with chemical insecticide indicated that 8% “green mine”at 300× dilution at 25 days after treatment had the best effect.It was better of 15 days after treatment if at 400×dilution of 50% methamidonhos or at 400×dilution of omethoate.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2001年第4期58-64,共7页
Scientia Silvae Sinicae
基金
国家"九五"科技攻关专题 (96 0 0 5 0 4 0 4)
关键词
星天牛
苦楝
诱饵树
化学成分
防治
粗提物
林木害虫
Anoplophora chinensis, Melia azedarach., Alluring tree,Chemical composition, Control
