摘要
在室内条件下采用浸叶法测定了茶毛虫核型多角体病毒（ Euproctis pseudoconspersa nucleopolyhedrovirus, EpNPV）和苏云金杆菌（Bacillus thuringiensis , Bt）及其不同配比对茶毛虫的毒力，结果表明，EpNPV和Bt5种比例混用均表现出不同程度的增效作用，共毒系数在177．3～221．7之间。其中以1．0×10^4PIB／μL EpNPV＋2000IU／μL，Bt混用增效最明显，其毒效是Bt单剂的2．54倍。田间小区试验表明，EpNPV-Bt混剂（1．0×10^4PIB／μL EpNPV＋2000IU／μLBt）对茶毛虫幼虫有优良的防效，显著优于Bt单剂和EpNPV单剂（声〈0．05）。
The virulence of EpNPV, Bt and their mixture against the larvae of Euproctis pseudoconspersa was investigated in laboratory. All of the five ratios of EpNPV mixed with Bt showed synergistic effects. The co-toxicity coefficient ranged from 177. 3 to 221. 7. Among the five ratios, 1. 0 ×104 PIB/μL EpNPV mixed with 2 000 IU/μL Bt had the highest synergistic effect, in which the toxicity was 2.54 times higher than that of Bt alone. The field trials demonstrated that EpNPV-Bt （1.0 × 104 PIB/μL EpNPV mixed with 2 000 IU/μL Bt） had a significantly better control effect than both Bt and EpNPV alone（p〈0.05）.
出处
《植物保护》
CAS
CSCD
北大核心
2010年第5期165-167,共3页
Plant Protection
基金
浙江省科技计划项目(2007C12035)
国家科技支撑计划项目(2008BADA5B06)
科技部公益基金项目(2005DIA4J052)
关键词
EpNPV
Bt增效作用
配比
田间防效
茶毛虫
nucleopolyhedrovims
synergism of Bt
ratio
control effect
Euproctis pseudoconspersa
