小菜蛾对苏云金杆菌制剂的抗药性及其对策  

RESISTANCE OF DIAMOND BACK MOTH TO BACILLUS THURINGIENSIS AND ITS MANAGEMENT STRATEGY

作　　者：戴承镛 殷向东[1] 徐熙[1] 张宏伟[1] 帅应垣[2] 冯夏[2] 陈焕瑜[2] 

机构地区：[1]江苏里下河地区农科所 [2]广东省农科院植保所

出　　处：《生物防治通报》1994年第2期62-66,共5页

摘　　要：作者首次报道了我国部分地区小菜蛾对Ｂｔ制剂的抗药性问题，华南、广州、深圳一带小菜蛾对Ｂｔ制剂的抗性比扬州小菜蛾强１０～２５倍，平均１７倍，而泰国曼谷小菜蛾的抗性又比华南的抗性小菜蛾增强４０％左右。抗性小菜蛾对Ｈ１、Ｈ３、Ｈ５、Ｈ７４个常用血清型的参试菌株均较敏感；试验结果还表明，小菜蛾在Ｂｔ与化学农药之间无交互抗性。Ｂｔ与化学农药复方制剂对小菜蛾有较好的防效，已在深圳、广州等地示范推广死亡率达８１．５～９０．９％。This paper reports the resistance of diamond back moth(DBM), Plutella xylostela , to Bacillus thuringiensis (Bt)in Southern China.The resistance of DBM to B t in Shenzhen,Guangzhou and some other areas of Southern China was found to be 1 0 25 times(average of 17 times)greater than that of the DBM in Yangzhou.The res istance to Bt by a Thailand strain of DBM was 46% greater than that in Southern China.The resistant DBM was subjected to four common stereotypes of Bt,viz.H1,H3 ,H5 and H7.The results of the tests also indicated that the DBM had no cross res istance against Bt and the tested chemical pesticides.Mixed formulation of Bt an d the chemical pesticides gave good control results.This technique has been appl ied in Shenzhen and Guangzhou areas,resulted in 81.5 90.9% mortality of DBM.

关 键 词：小菜蛾 抗药性 苏云金杆菌 

分 类 号：S482.7[农业科学—农药学]