广宁县盛产青皮竹,现有竹林70多万亩,被誉为“竹子之乡”。过去未见有竹蝗危害的记载,近十几年来,在新楼、古水、厚溪、石涧、排沙、宾坑等公社大发生,受害面积多达四万八千多亩(1975年)。严重之处,竹林一片枯黄,呈火烧状。防治方法主要是施放666烟剂和喷666、1605混合粉剂。据统计,仅1973年以来就用了这些农药120多吨。长期地、大量地使用化学药剂,不但污染环境,增强害虫抗性,而且毒杀了林内有益生物,导致竹蝗的猖 Quang Ninh County abounds in green bamboo, the existing bamboo more than 70 acres, known as “bamboo town ”. In the past, there were no documented records of the hazards of bamboo locusts. In the past decade or so, as many as 48,000 acres have been affected in communes such as the new building, the ancient water, the thick stream, the stone stream, the sand discharge, and Bing Hang (1975 year). Seriously, bamboo a yellow, was burning like. Prevention and control methods are mainly cast 666 smoke and spray 666,1605 mixed powder. According to statistics, only 120 tons of these pesticides have been used since 1973. Long-term, large-scale use of chemical agents, not only pollute the environment and enhance pest resistance, but also kill the beneficial organisms within the forest, leading to Zhuchu rampant