35%赛丹乳油防治苹果黄蚜和麦蚜药效试验

Test to Control of Aphis citricola and Macrosiphum avenae with Thiodan

３５ ％ 赛丹乳油对苹果黄蚜和麦长管蚜均有较好的防效，对天敌的优势种瓢虫的杀伤率低，防治苹果黄蚜的适宜浓度２０００ 倍液，持效期７ 天。防治麦蚜适宜用３００～３７５ｇ／ｈｍ２ ，持效期为１４ 天，防效为８９－３４％ 、９１－７２ ％ 、９９－２％ 。

The experiment was carried out for measuring effect of thiodan of control Aphis citricola and Macrosiphum avenae.It is safe for ladybug.It sustained about 7-14 days.The suitable concentration was 1:2000 and 300-375g/ha.