沿海防护林害虫研究

Study on Insect Damage in Casnarina equisetifolia Protective Forest in Coastal Area

木麻黄（CasuarinaequisetifoliaL.）是沿海防护林的主要造林树种，本省已发现危害木麻黄的害虫有6目26科73种，其中以星天牛Anoplophorachinensis（Forster）分布最广，危害最严重，在本省年发生以1代为主，幼虫在寄主树干木质部隧道中越冬，试验结果表明，用磷化锌毒签防治幼虫较为理想，校正虫口减退率为94.4％。

Casnarina equisetifolia is an important if tree species for protective forest in coastal area. Insects of 73 species of 26 families from 6 orders were discovered in Zhejiang province, among which Anoplophora chinensishad the widest distribution and most seriouse damage. It occured one generation every year in Zhejiang,larvae overwintered in canal of hadromestome of hosted tree. Experiment show that control larvae with zine phosphide cotton-picks had 94. 4% of adjusted decrease rate.