松阿扁叶蜂生物学特性及防治技术研究

松阿扁叶蜂是目前商洛市油松林重要食叶害虫,严重威胁油松林的生长发育。定点研究了其生物学特性、发生危害规律,开展了防治试验。松阿扁叶蜂在商洛林区1年发生1代,由幼虫越冬。其危害油松纯林重于混交林;立地条件较好的油松林分重于立地条件差的林分。喷施森得保粉剂（2.25 kg/hm2）、1.2%苦.烟乳油1 000~1 200倍液、3%高渗苯氧威乳油3 500~4 500倍液均可取得良好防效。

Biological Characteristics of Acantholyda posticalis Matsunura and its Controlling Techniques

Flat Sawfly（Acantholyda posticalis Matsunura） is mainly leaf-fed pest attacking Chinese pine（Pinus tabulaeformis） forest,threatening the growth of the pine forest.Based on the biological characteristics and its occurrence regulation,prevention and controlling test of the flat sawfly were carried out.It has been found that the flat sawfly occurs 1 generation per year and its larva live through the winter.The harm is more severe in pure pine forest than in mixed pine forest;is more severe in pine forest of better site condition than that of bad site conditions.The controlling of flat sawfly is effective by spraying Sendebao powder（2.25 kg/hm2）,1.2% Ku-tobacco（1000～1200）,and 3%fenoxycarb（3500～4500）.