In Heshan City of Guangxi Zhuang Autonomous Region, a large area of insect pest disaster hit Liuhualing Forest Farm and 67 hectares of fast-grown eucalypt forest suffered from this infrequent disaster. In addition, another 467 hectares of such forest are under the threat of the insect pests. Up to now there is no good method for preventing and controlling the insect pests. Effective prescription for killing the insect pests is solicited from now on...