蝗虫:生物防治新突破

• 出 处: 世界科学
• 发表日期: 2000年08期
• 关键词: 生物防治 蝗虫 生物科学中心 真菌 杀虫剂 生物杀虫剂 天敌 几丁质 合成杀虫剂 真菌孢子

迄今为止，防治沙蝗大多采用有机氯制剂，该杀虫剂会沉积在土壤中并进入食物链。接着不用有机氯制剂而采用了寿命短的合成杀虫剂，该杀虫剂虽能在短短几天之内自行分解，若遇上强太阳照射，甚至会在短短几小时内分解。但它必须直接喷撒虫群方才有效，且要大量喷撒，这样势必殃

To date, most locust control locusts have been treated with organochlorine agents that can be deposited in the soil and enter the food chain. Instead of the organochlorine formulation, a short-lived synthetic insecticide was used which, although insecticide decomposes within a matter of days, can even decompose within a matter of hours in the presence of strong solar radiation. However, it must be sprayed directly on the insect population was effective, and to a large number of spray, it is bound to bring disaster