摘要
在室内采用浸渍玻片法和浸渍植株法分别测定了不同温度下齐墩螨素对棉红蜘蛛和水稻黑尾叶蝉的毒力。结果表明,在18℃、24℃、30℃、35℃时齐墩螨素对棉红蜘蛛的LC50值分别为0.0063、0.0027、0.0018、0.00053 mg/L,而对水稻黑尾叶蝉的LC50值分别为0.2068、0.1544、0.102 9、0.044 41 mg/L。说明齐墩螨素对昆虫的毒力属于正温度效应,即毒力随温度的升高而逐渐增强。
Toxicities of avermectin against Tetranychus urticae and Nephotettix cincticeps were assayed in the laboratory under the different temperatures with slip-slide method and immersion method, respectively. The result showed that the LC50 value against Tetranychus urticae at 18℃, 24℃, 30℃ and 35℃ was 0.006 3, 0.002 7, 0.001 8 and 0.000 53 mg/L, and the LC50 value against Nephotettix cincticeps was 0.206 8, 0.154 4, 0.102 9 and 0.044 41 mg/L respectively, suggesting that the toxicity of avermectin against the insects increase as the temperature rised.
出处
《现代农药》
CAS
2005年第2期37-38,共2页
MODERN AGROCHEMICALS
