<正>用触破式微胶囊剂防治西北地区杨树毁灭性害虫光肩星天牛和黄斑星天牛的试验结果表明，该剂型不仅对天牛击倒快、药效高，而且具有持效期长的优点。该剂喷施于杨树树干上３８ｄ后，对两种天牛出孔成虫的药效仍达到９０％～１００％。

It is reported that contacted_breaking release microcapsules are a new kind of ones and they are processed in a low tempteture. When used to control long_horn beetles, the have better effect than slow_release microcapsules do. The reason is that when stepped on by long_horn beetles they will blast and release all pesticide in capsules to the legs of long_horn beetles, and kill the beetles. If they are not contacted by long_horn beetles, they microcapsules will maintain their original shapes. According to our experiment in the northwest of China, the microcapsules can keep mortality to Anoplophora nobilis and A. glabripennis by one hundred percent within 39 days after being sprayed onto the barks of trees.