在省地植保站、省微生物所的帮助下,1976年我们在民主公社建华大队进行了玉米心叶繁菌治螟试验,1977年又进行了示范,初步肯定了此法的治螟效果。这种方法,就是用白僵菌二级母剂接种三级原料后,直接撒在玉米心叶里,使白僵 With the help of the Provincial Plant Protection Station and the Provincial Institute of Microbiology, we conducted a pilot test of the corn leaf heart disease in 1976 at the Jianhua Brigade of the Democratic Commune. In 1977, we conducted a demonstration and tentatively confirmed the effectiveness of this method in controlling rice borers. This method is to use Beauveria bassiana secondary mother three levels of raw materials, directly sprinkled in the corn heart leaves, white stiff