| 摘要: |
| 松阿扁叶蜂(Acantholyda posticalis Matsumura)发生规律的初步观察表明:该虫1年1代,以老熟幼虫在树冠下疏松的土层中筑土室越夏越冬;幼虫4月下旬至6月上旬在油松新梢针叶基部吐丝结茧筑巢取食针叶,对新梢生长造成严重影响。对土壤中越冬虫量调查发现,土质疏松且腐殖质层厚的林地,越冬幼虫数量明显较多。药剂防治以幼虫孵化盛末期喷施15 g /kg甲敌粉,防治效果可达92%以上。 |
| 关键词: 松阿扁叶蜂，发生规律，油松 |
| DOI： |
| 分类号:S763.3 |
| 基金项目:陕西省科技攻关资助项目 |
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| A Preliminary Report on the Occurrence Rule of Acantholyda posticalis Matsumura |
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| Abstract: |
| The observation of the Acantholyda posticalis Matsumura shows that the
pine sawfly occurs one generation a year in Mixian County,Shaanxi, and prepupa in cocoon oversummer and overwinter in the litter. The larvae damages chinese pine leaf of
the one-year-old branch from late April to early June as well as produces silk,weaves
net to nest in the branch.The growth amount of the infestation twig in this year is only
36%～62% of the uninfestation twig. Investigation has shown that the amount of overwintering cocoon in the litter has been closely related to the thick and loose of humus soil. 1. 5% of Dail and Dylex (Parathion methyl Trichlorfan) dust is used to control the
larvae in the hatching peak,with the control effect reachingmore than 92%. |
| Key words: pest occurrence rule,Acantholyda posticalis Matsumura,Pinus tabuleaformis Carr |
