摘要
生防试验表明,应用Bt(WP、16000IU/mg)2000倍液、Bt(SC、2000IU/μL)800倍液及以上浓度防治美国白蛾各龄幼虫效果可达98％以上,在生产上可替代化学农药。
The results of field biological test indicated that Bt(WP. 16 000IU/mg)sprayed at 2 000 dillution rate and Bt (SC.2 000IU//nL) at over 800 dillution rate respectirely produced high efficacy of over 98% .for fhe larvae at any stage. 'Shenglu'can replace chemical pesticide to prevent and control the pests.
出处
《河北农业科学》
1999年第4期18-21,共4页
Journal of Hebei Agricultural Sciences
