植物质杀虫剂《85—1》防治甘兰菜青虫、蚜虫试验初报

• 作 者: 何占祥 阮思新 胡信仁 龙卫华
• 机 构: 贵州省农科院植保所,贵州省农科院植保所,石阡县植保站,石阡县植保站
• 出 处: 贵州农业科学
• 发表日期: 1987年03期
• 关键词: 拒食率 田间小区试验 防虫效果 持效期 叶蝉散 供试昆虫 触杀作用 拒食作用 作用方式 白背飞虱

植物质杀虫剂《85—1》(几种植物质混合水剂),在室内用叶片带毒法测定,菜青虫3龄幼虫拒食率96％,防虫效果80～93.3％,持效期6～10天。用触杀法测定对菜青虫幼虫的触杀效果为13.4～26％。田间小区试验防治菜青虫幼虫、芽蚜若虫的效果达90％以上,对水稻稻纵卷叶螟防效68％,对稻飞虱防效较差,对稻田蜘蛛无杀伤力。

Botanical insecticide “85-1” (several vegetable-liquid mixed agents) was determined indoors by leaf poisoning method. The 3rd instar larvae of Parasitoid were treated at the rate of 96%, the pest control efficiency was 80-93.3% and the persistence period was 6 ~ 10 days. The contact effect on the larvae of Pieris rapae was determined by touch method to be 13.4% ~ 26%. Field trials to control Pieris rapae larvae, bud aphid nymphs effect of more than 90% of the rice leaf roller leaf control effect of 68%, the planthopper control efficacy is poor, non-lethal to rice field spiders.