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苏云金杆菌对马尾松毛虫的防治效果在我国早已被证实。但与白僵菌相比,苏云金杆菌至今使用面积仍然很小。其主要原因,除当前制剂成本较高之外,林区山高坡陡,缺乏水源和喷药机械,液剂的应用受到很大限制,致使苏云金杆菌难于广泛推广使用。为解决上述困难,1976年我们首次采用了苏云金杆菌库斯达克(Bacillus thurinqiesis Var Kurstaki)变种,代号HD-1的菌粉,并以苏云金变种为对照,进行了一系列室内外初步试验,证实HD-1对
Bacillus thuringiensis Dendrolimus caterpillar’s control effect has long been confirmed in our country. However, compared with Beauveria bassiana, Bacillus thuringiensis has still used small area. The main reason is that in addition to the current high cost of preparation, the steep mountain slope, lack of water and spraying machinery, the application of liquid has been greatly restricted, resulting in Bacillus thuringiensis difficult to widely promote the use. In order to solve the above difficulties, we first used the strain Bacillus thurinqiesis Var Kurstaki (strain HD-1) in 1976 and carried out a series of preliminary experiments both in and out of our laboratory, confirming HD-1 pair