【摘要】 测定了 2 0种化学添加剂 ,在添加 1 .0 %的剂量下对Bt毒杀棉铃虫幼虫的增效作用。初筛和复筛结果表明 ,CuSO4( 1 .0 % )、ZnCl2 ( 1 .0 % )和硼酸等 6种物质有增效作用 ,其中CuSO4的增效作用最好 ,增效比为 1 5 .67,其次为ZnCl2 ,增效比为 1 1 .2。更多还原

【Abstract】 Twenty chemical additives at dosage of 1% were tested for their efficacy to enhance the toxicity of Bacillus thuringiensis against Heliothis armgera.The results showed that CuSO 4 was the most effective with its ratio of synergism 15.67 and ZnCl 2 was the second with its ratio of synergism 11.2.更多还原