【摘要】 用“保蚕宁3号”喷洒不同龄期柞蚕,对柞蚕再感染的脓病、空胴病都有明显的防治效果;以在3龄期或4龄期喷洒,防治效果最佳,平均防治效果高达81.9%以上。更多还原

【Abstract】 Baocanning No.3 had significant control effect on tussah reinfection nuclear polyhedrosis and Streptococcus pernyi by spraying it on different instars.Baocanning No.3 was more effective on 3rd and 4th instars with the average control effect of more than 81.9 %.更多还原