10％三氟氯氰菊酯微胶囊悬浮剂的缓释性能和杀虫活性探究

Slow Release Property and Insecticidal Activity of Cyhalothrin 10% Microcapsule Suspension

[方法]采用离心和稀释法、高效液相色谱分析、室内杀虫活性测定和盆栽试验,研究了10%三氟氯氰菊酯微胶囊悬浮剂的缓释性能和杀虫作用。[结果]三氟氯氰菊酯的微胶囊吸附率可达95%左右。经离心和稀释处理获得的样品I^VII中,对3龄黏虫杀虫活性表现为I>II>V>IV>III≈VI>VII,样品V的杀虫活性低于样品I和II,但显著优于III和VI。且II的盆栽防治效果优于I。[结论]说明10%三氟氯氰菊酯微胶囊悬浮剂具有较好的缓释杀虫性能。

[Methods] Slow Release property and insecticidal activity of cyhalothrin 10% microcapsule suspension were investigated by using the centrifugation and dilution method, high performance liquid chromatography, laboratory insecticidal activity test and pot experiment. [Results] The results showed that the adsorbing rate of cyhalothrin on microcapsules could reach about 95%. Among the samples I-VII obtained by centdfugation and dilution, the insecticidal activity against 3^nd instar larvae of Mythimna separata Walker showed as I〉 II〉 V〉 IV〉 III≈ VI〉 VII, the insecticidal activity of V was inferior to that of I and II, but was significantly higher than that of lII and VI. In addition, the control efficacy of II in pot experiment was better than that of I. [Conclusions] The cyhalothrin 10% microcapsule suspension possess good sustained release property and insecticidal activity.