养蚕在我国有着悠久的历史,而养蚕的副定品——蚕沙则是一种良好的饲鱼饵料和肥料。但使用方法不当则适得其反。现介绍一下正确的使用方法。蚕沙是蚕粪和剩桑叶的混合物,在饲蚕的过程中要喂一些如“敌敌畏”、“氯霉素”等药物,而这些药物在短短的二、三天内药性不可能完全消失。所以不应把蚕沙直接投入鱼池。其次,还 Sericulture in our country has a long history, and sericulture’s deputy fixed - silkworm excrement is a good feed bait and fertilizer. However, improper use is counterproductive. Now introduce the correct method of use. Silkworm excrement is a mixture of silkworm excrement and leaves of mulberry leaves. During the process of silkworm feeding, some drugs such as “dichlorvos” and “chloramphenicol” should be fed, and these drugs can not completely disappear in just two or three days . So silkworm sand should not be directly into the pond. Second, also