罗氏沼虾敌害生物的防治一、青蛙１．做好清塘工作，杀灭池塘中蝌蚪及卵块；２．四、五月份、每日清晨沿池塘四周巡检一遍，发现有青蛙卵块及时捞除；３．夏季晚上拿电筒及网罩进行捕捉成蛙。二、水蛇、水老鼠１．对于水蛇等蛇类，首先将埂上杂草等清理干净．让其无处存身... Roche Macrobrachium predator biological control a frog 1. Good Qing Tong work to kill pond tadpoles and eggs; 2. Fourth, in May, every morning along the pond inspection tour again and found frog eggs in time to remove; 3. Take a flashlight and a net cover to capture frogs in the summer. Second, the water snake, water mouse 1. For snakes and other snakes, first weed and other weeds clean up. Let it nowhere to save ...