新型毒饵灭治林地白蚁(螱)

<正>在我国长江流域以南,广泛地分布着网螱属(Reticulitermes)、乳螱属(Coptotermes),大螱属(Macrotermes)和土螱属(Odontotermes)等种类。其中尤以土螱属和大螱属的某些种类对人工林造成的危害更甚。过去对这二属螱类危害种的化学防除,通常采用六六六、DDVP插管等烟剂鼓风压烟及铁筒自然压烟以及灭蚁灵(Mirex)粉剂喷射等法,可取得一定的效果。但是这些方法都有污染环境、费用较高、耗药量大等问题。 为此,我们于1983年8月下旬～1984年12月上旬在宜兴县林场进行了应用“胶冻剂毒饵”灭治林地白蚁的野外试验。现将试验情况报导如下: 一、试验林地的选择 选择土囟螱(O.fontanellus)、黄翅大螱(M.barneyi)和黄胸网螱(R.flaviceps)危害严重而过去未经防治的林地。 试验林地选定在茅山工区。确定茅山护林房下、沟北路东约7亩人工杉木林为试验林。1983年8月25日抽样调查,从南到北任选两排植株检查白蚁危害情况。结果见表1。

A NEW TOXIC BAIT FOR THE CONTROL OF FOREST-INFESTED TERMITES

Jelly compound agent", a toxic bait for controlling Odontotermes fontanellus Kemner, Macrotermes barneyi Light and Reticulitermes flaviceps (Oshima), was made with rotten wood sawdust infected by Tremella fuciformis Berk and Auricularia auricula (L. ex Hook.) Underw, bagasse dust, agar and pesticides, as rotten wood sawdust had a stronger attraction to several species of genera (Odontotermes, Macrotermes and Reticulitermes) which infested Chinese fir plantations in China. This toxic bait had the following advantages effective, safe to use, easy to carry and popularize, while causing almost no pollution to the environment. The populations of Xylaria spp. are reliable markers of the dead colonies of O. fontanellus and M. barneyi.