摘要
采用注射法分别就两种植物性农药藜芦和苦参对中华稻蝗蝻和初羽化成虫的毒力进行了测定和分析比较。结果显示 ,两种农药对中华稻蝗均有较强的杀伤力 ,其中 2 6%复方苦参碱的毒性比 0 5 %藜芦制剂毒性大 ;蝗蝻较成虫对药剂敏感 ,龄期越小 ,敏感性越高。此外 ,本文还就两种药剂在不同时间作用段对中华稻蝗的毒力作了分析 ,结果表明 ,在较短时间达到一定的杀伤力 ,需要较大的作用量 ,显示出致死剂量对时间的依赖性。
In this paper, toxicity of two kinds of plant extracts: veratramine and matrine to nymphs and fledgling adults of Oxya chinensis(Thunberg)was assayed and compared. The results showed that the two insecticides were both highly toxic to O. chinensis and the toxicity of matrine was higher than veratramine. Nymphs were more susceptible to both plant extract than that of adults and the susceptibility decreased with the instar's increase. Moreover, the toxicity of insecticides was also assayed at different period...
出处
《动物学报》
SCIE
CAS
CSCD
北大核心
2001年第S1期48-51,共4页
ACTA ZOOLOGICA SINICA
基金
国家自然科学基金资助项目 (No .395 70 10 7)
关键词
中华稻蝗
植物性农药
藜芦
苦参
毒力
Oxya chinensis
Plant extract
Veratramine
Matrine
Toxicity
