从释药动态及灭蚊幼效果观察中，比较了包装型及几种吸附型缓释剂。结果表明，包装型缓释剂虽然释药率稳定（ＣＶ为１０．５５％），但初始需增加一个有效浓度方能起杀虫作用；而硬脂酸缓释剂无需另加剂量，且释药率也较为稳定（ＣＶ为６６．０３％）；杉木块和珍珠岩缓释剂类似常规喷洒剂，但也有一定的持效。 From the drug release dynamics and mosquito-killing effect observed, the packaging type and several adsorption-type slow-release agent were compared. The results showed that although the sustained release rate was stable (CV of 10.55%), the sustained release dosage of the package type had to be increased by an effective concentration for the first time. However, the dosage of stearic acid sustained release dosage was not needed, The drug rate was also relatively stable (CV was 66.03%); fir block and perlite sustained-release agent similar to conventional spray, but also a certain degree of persistence.