【摘要】 用夹竹桃(Nerium indium)和紫红链霉菌(Streptomyces violaceoruber)复合颗粒剂进行灭螺实验,并与单独使用夹竹桃灭螺和紫红链霉菌的灭螺效果对照,探讨夹竹桃和链霉菌的协同或拮抗作用.研究结果表明:夹竹桃和紫红链霉菌复合灭螺具有一定协同增效作用.复合颗粒剂在不同温度下对钉螺毒杀效果有较大的差异,在15℃下,钉螺7 d死亡率为64.2%;在25℃下,钉螺7 d死亡率为83.2%;在35℃下,钉螺7 d死亡率49.9为%.更多还原

【Abstract】 Using the single molluscicidal plants as controls,the mixture pellets at certain concentration of different molluscicidal plants and Streptomyces violaceoruber were applied against Oncomelania hupensis to explore the cooperating or counteracting effects.The result shows that Nerium indium and S.violaceoruber are cooperative,their mixture pellets does the best in killing O.hupensis.The mixture pellets exhibit significantly different molluscicidal activity under different temperature condition,mortality rates at 7 d for O.hupernsis is 64.2%,83.2% and 49.9% at temperature of 15℃,25℃ and 35℃,respectively.更多还原